mysql.php ➔ mysql_connect() - Code Metrics - Inspection of "Merge pull request #9 from staabm/patch-1" - dshafik/php7-mysql-shim - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( e198b7...7f0c36 )

by Davey

created 2016-07-04 02:59 UTC

mysql.php ➔ mysql_connect() D

↳ Parent: Project

Complexity

Conditions	13
Paths	378

Size

Total Lines	68
Code Lines	43

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	28
CRAP Score	13

Importance

Changes

Metric	Value
cc	13
eloc	43
nc	378
nop	5
dl	0
loc	68
ccs	28
cts	28
cp	1
crap	13
rs	4.2817
c	0
b	0
f	0

How to fix Long Method Complexity

<?php
namespace {

    if (!function_exists('\mysql_connect')) {
        define ('MYSQL_ASSOC', 1);
        define ('MYSQL_NUM', 2);
        define ('MYSQL_BOTH', 3);
        define ('MYSQL_CLIENT_COMPRESS', 32);
        define ('MYSQL_CLIENT_SSL', 2048);
        define ('MYSQL_CLIENT_INTERACTIVE', 1024);
        define ('MYSQL_CLIENT_IGNORE_SPACE', 256);

        function mysql_connect(
            $hostname = null,
            $username = null,
            $password = null,
            $new = false,
            $flags = 0
        ) {
            if ($new !== false) {
                trigger_error('Argument $new is no longer supported in PHP > 7', E_USER_WARNING);
            }
            if (null === $hostname) {
                $hostname = ini_get('mysqli.default_host') ?: null;
            }
            if (null === $username) {
                $username = ini_get('mysqli.default_user') ?: null;
            }
            if (null === $password) {
                $password = ini_get('mysqli.default_pw') ?: null;
            }

            $hash = sha1($hostname . $username . $flags);
            if ($hostname{1} != ':' && isset(\Dshafik\MySQL::$connections[$hash])) {
                \Dshafik\MySQL::$last_connection = \Dshafik\MySQL::$connections[$hash]['conn'];
                \Dshafik\MySQL::$connections[$hash]['refcount'] += 1;
                return \Dshafik\MySQL::$connections[$hash]['conn'];
            }

            if ($flags === 0) {
                \Dshafik\MySQL::$last_connection = $conn = mysqli_connect($hostname, $username, $password);
                $conn->hash = $hash;
                \Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];

                return $conn;
            }

            try {
                \Dshafik\MySQL::$last_connection = $conn = mysqli_init();

                mysqli_real_connect(
                    $conn,
                    $hostname,
                    $username,
                    $password,
                    '',
                    null,
                    '',
                    $flags
                );

                // @codeCoverageIgnoreStart
                // PHPUnit turns the warning from mysqli_real_connect into an exception, so this never runs
                if ($conn === false) {
                    return false;
                }
                // @codeCoverageIgnoreEnd

                $conn->hash = $hash;
                \Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];

                return $conn;
            } catch (\Throwable $e) {
                trigger_error($e->getMessage(), E_USER_WARNING);
                // @codeCoverageIgnoreStart
                // PHPUnit turns the warning into an exception, so this never runs
                return false;
                // @codeCoverageIgnoreEnd
            }
        }

        function mysql_pconnect(
            $hostname = null,
            $username = null,
            $password = null,
            $flags = 0
        ) {
            $hostname = 'p:' . $hostname;
            return mysql_connect($hostname, $username, $password, false, $flags);
        }

        function mysql_close(\mysqli $link = null)
        {
            $isDefault = ($link === null);

            $link = \Dshafik\MySQL::getConnection($link, __FUNCTION__);
            if ($link === null) {
                // @codeCoverageIgnoreStart
                // PHPUnit Warning -> Exception
                return false;
                // @codeCoverageIgnoreEnd
            }

            if (isset(\Dshafik\MySQL::$connections[$link->hash])) {
                \Dshafik\MySQL::$connections[$link->hash]['refcount'] -= 1;
            }

            $return = true;
            if (\Dshafik\MySQL::$connections[$link->hash]['refcount'] == 0) {
                $return = mysqli_close($link);
                unset(\Dshafik\MySQL::$connections[$link->hash]);
            }

            if ($isDefault) {
                Dshafik\MySQL::$last_connection = null;
            }

            return $return;
        }

        function mysql_select_db($databaseName, \mysqli $link = null)
        {
            $link = \Dshafik\MySQL::getConnection($link);

            return mysqli_query(
                $link,
                "USE " . mysqli_real_escape_string($link, $databaseName)
            ) !== false;
        }

        function mysql_query($query, \mysqli $link = null)
        {
            return mysqli_query(\Dshafik\MySQL::getConnection($link), $query);
        }

        function mysql_unbuffered_query($query, \mysqli $link = null)
        {
            $link = \Dshafik\MySQL::getConnection($link);
            if (mysqli_real_query($link, $query)) {
                return mysqli_use_result($link);
            }

            return false;
        }

        function mysql_db_query($databaseName, $query, \mysqli $link = null)
        {
            if (mysql_select_db($databaseName, $link)) {
                return mysql_query($query, $link);
            }
            return false;
        }

        function mysql_list_dbs(\mysqli $link = null)
        {
            return mysql_query("SHOW DATABASES", $link);
        }

        function mysql_list_tables($databaseName, \mysqli $link = null)
        {
            $link = \Dshafik\MySQL::getConnection($link);
            return mysql_query("SHOW TABLES FROM " . mysql_real_escape_string($databaseName, $link), $link);
        }

        function mysql_list_fields($databaseName, $tableName, \mysqli $link = null)
        {
            $link = \Dshafik\MySQL::getConnection($link);
            $result = mysql_query(
                "SHOW COLUMNS FROM " .
                mysqli_real_escape_string($link, $databaseName) . "." .
                mysqli_real_escape_string($link, $tableName),
                $link
            );

            if ($result instanceof \mysqli_result) {
                $result->table = $tableName;
                return $result;
            }

            trigger_error("mysql_list_fields(): Unable to save MySQL query result", E_USER_WARNING);
            // @codeCoverageIgnoreStart
            return false;
            // @codeCoverageIgnoreEnd
        }

        function mysql_list_processes(\mysqli $link = null)
        {
            return mysql_query("SHOW PROCESSLIST", $link);
        }

        function mysql_error(\mysqli $link = null)
        {
            return mysqli_error(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_errno(\mysqli $link = null)
        {
            return mysqli_errno(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_affected_rows(\mysqli $link = null)
        {
            return mysqli_affected_rows(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_insert_id($link = null) /*|*/
        {
            return mysqli_insert_id(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_result($result, $row, $field = 0)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            if (!mysqli_data_seek($result, $row)) {
                trigger_error(
                    sprintf(
                        "mysql_result(): Unable to jump to row %d on MySQL result index %s",
                        $row,
                        spl_object_hash($result)
                    ),
                    E_USER_WARNING
                );
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            $found = true;
            if (strpos($field, ".") !== false) {
                list($table, $name) =  explode(".", $field);
                $i = 0;
                $found = false;
		        mysqli_field_seek($result, 0);
                while ($column = mysqli_fetch_field($result)) {
                    if ($column->table == $table && $column->name == $name) {
                        $field = $i;
                        $found = true;
                        break;
                    }
                    $i++;
                }
            }

            $row = mysql_fetch_array($result);
            if ($found && array_key_exists($field, $row)) {
                return $row[$field];
            }

            trigger_error(
                sprintf(
                    "%s(): %s not found in MySQL result index %s",
                    __FUNCTION__,
                    $field,
                    spl_object_hash($result)
                ),
                E_USER_WARNING
            );
            // @codeCoverageIgnoreStart
            return false;
            // @codeCoverageIgnoreEnd
        }

        function mysql_num_rows($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            $previous = error_reporting(0);
            $rows = mysqli_num_rows($result);
            error_reporting($previous);

            return $rows;
        }

        function mysql_num_fields($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_num_fields($result);
        }

        function mysql_fetch_row($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_fetch_row($result) ?: false;
        }

        function mysql_fetch_array($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_fetch_array($result) ?: false;
        }

        function mysql_fetch_assoc($result) /* : array|null */
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            return mysqli_fetch_assoc($result) ?: false;
        }

        function mysql_fetch_object($result, $class = null, array $params = []) /* : object|null */
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            if ($class == null) {
                $object = mysqli_fetch_object($result);
            } else {
                $object = mysqli_fetch_object($result, $class, $params);
            }

            return $object ?: false;
        }

        function mysql_data_seek($result, $offset)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_data_seek($result, $offset);
        }

        function mysql_fetch_lengths($result) /* : array|*/
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_fetch_lengths($result);
        }

        function mysql_fetch_field($result) /* : object|*/
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_fetch_field($result);
        }

        function mysql_field_seek($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_field_seek($result, $field);
        }

        function mysql_free_result($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_free_result($result);
        }

        function mysql_field_name($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'name');
        }

        function mysql_field_table($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'table');
        }

        function mysql_field_len($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'len');
        }

        function mysql_field_type($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'type');
        }

        function mysql_field_flags($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'flags');
        }

        function mysql_escape_string($unescapedString)
        {
            if (\Dshafik\MySQL::$last_connection == null) {
                trigger_error(
                    sprintf(
                        "%s() is insecure; use mysql_real_escape_string() instead!",
                        __FUNCTION__
                    ),
                    E_USER_NOTICE
                );

                return \Dshafik\MySQL::escapeString($unescapedString);
            }
            return mysql_real_escape_string($unescapedString, null);
        }

        function mysql_real_escape_string($unescapedString, \mysqli $link = null)
        {
            return mysqli_escape_string(\Dshafik\MySQL::getConnection($link), $unescapedString);
        }

        function mysql_stat(\mysqli $link = null)
        {
            return mysqli_stat(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_thread_id(\mysqli $link = null)
        {
            return mysqli_thread_id(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_client_encoding(\mysqli $link = null)
        {
            return mysqli_character_set_name(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_ping(\mysqli $link = null)
        {
            return mysqli_ping($link);
        }

        function mysql_get_client_info(\mysqli $link = null)
        {
            return mysqli_get_client_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_get_host_info(\mysqli $link = null)
        {
            return mysqli_get_host_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_get_proto_info(\mysqli $link = null)
        {
            return mysqli_get_proto_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_get_server_info(\mysqli $link = null)
        {
            return mysqli_get_server_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_info(\mysqli $link = null)
        {
            return mysqli_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_set_charset($charset, \mysqli $link = null)
        {
            return mysqli_set_charset(\Dshafik\MySQL::getConnection($link), $charset);
        }

        function mysql_db_name($result, $row)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            // Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#319
            return mysql_result($result, $row, 'Database');
        }

        function mysql_tablename($result, $row)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            // Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#321
            return mysql_result($result, $row, 'Table');
        }

        /* Aliases */

        function mysql_fieldname(... $args)
        {
            return mysql_field_name(... $args);
        }

        function mysql_fieldtable(... $args)
        {
            return mysql_field_table(... $args);
        }

        function mysql_fieldlen(... $args)
        {
            return mysql_field_len(... $args);
        }

        function mysql_fieldtype(... $args)
        {
            return mysql_field_type(... $args);
        }

        function mysql_fieldflags(... $args)
        {
            return mysql_field_flags(... $args);
        }

        function mysql_selectdb(... $args)
        {
            return mysql_select_db(... $args);
        }

        function mysql_freeresult(... $args)
        {
            return mysql_free_result(... $args);
        }

        function mysql_numfields(... $args)
        {
            return mysql_num_fields(... $args);
        }

        function mysql_numrows(... $args)
        {
            return mysql_num_rows(... $args);
        }

        function mysql_listdbs(... $args)
        {
            return mysql_list_dbs(... $args);
        }

        function mysql_listtables(... $args)
        {
            return mysql_list_tables(... $args);
        }

        function mysql_listfields(... $args)
        {
            return mysql_list_fields(... $args);
        }

        function mysql_dbname(... $args)
        {
            return mysql_db_name(... $args);
        }

        function mysql_table_name(... $args)
        {
            return mysql_tablename(... $args);
        }
    }
}

namespace Dshafik {

    class MySQL
    {
        public static $last_connection = null;
        public static $connections = [];

        public static function getConnection($link = null, $func = null)
        {
            if ($link !== null) {
                return $link;
            }

            if (static::$last_connection === null) {
                $err = "A link to the server could not be established";
                if ($func !== null) {
                    $err = $func . "(): no MySQL-Link resource supplied";
                }
                trigger_error($err, E_USER_WARNING);
                return false;
            }

            return static::$last_connection;
        }

        public static function mysqlFieldInfo(\mysqli_result $result, $field, $what)
        {
            try {
                $field = mysqli_fetch_field_direct($result, $field);
            } catch (\Exception $e) {
                trigger_error(
                    sprintf(
                        "mysql_field_%s(): Field %d is invalid for MySQL result index %s",
                        $what,
                        $field,
                        spl_object_hash($result)
                    ),
                    E_USER_WARNING
                );
                // @codeCoverageIgnoreStart
                // PHPUnit turns the warning into an exception, so this never runs
                return false;
                // @codeCoverageIgnoreEnd
            }

            if ($what == 'name' || $what == 'table') {
                return $field->{$what};
            }

            if ($what == 'len') {
                return $field->length;
            }

            if ($what == 'type') {
                return static::getFieldType($field->type);
            }

            if ($what == 'flags') {
                return static::getFieldFlags($field->flags);
            }

            return false;
        }

        public static function checkValidResult($result, $function)
        {
            if (!($result instanceof \mysqli_result)) {
                if ($function != "mysql_fetch_object") {
                    trigger_error(
                        $function . "() expects parameter 1 to be resource, " . strtolower(gettype($result)) . " given",
                        E_USER_WARNING
                    );
                }

                if ($function == "mysql_fetch_object") {
                    trigger_error(
                        $function . "(): supplied argument is not a valid MySQL result resource",
                        E_USER_WARNING
                    );
                }
                return false;
            }

        }

        public static function escapeString($unescapedString)
        {
            $escapedString = "";
            for ($i = 0; $i < strlen($unescapedString); $i++) {
                $escapedString .= self::escapeChar($unescapedString{$i});
            }

            return $escapedString;
        }

        protected static function getFieldFlags($what)
        {
            // Order of flags taken from http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#2507
            $flags = [
                MYSQLI_NOT_NULL_FLAG => "not_null",
                MYSQLI_PRI_KEY_FLAG => "primary_key",
                MYSQLI_UNIQUE_KEY_FLAG => "unique_key",
                MYSQLI_MULTIPLE_KEY_FLAG => "multiple_key",
                MYSQLI_BLOB_FLAG => "blob",
                MYSQLI_UNSIGNED_FLAG => "unsigned",
                MYSQLI_ZEROFILL_FLAG => "zerofill",
                MYSQLI_BINARY_FLAG => "binary",
                MYSQLI_ENUM_FLAG => "enum",
                MYSQLI_SET_FLAG => "set",
                MYSQLI_AUTO_INCREMENT_FLAG => "auto_increment",
                MYSQLI_TIMESTAMP_FLAG => "timestamp",
            ];

            $fieldFlags = [];
            foreach ($flags as $flag => $value) {
                if ($what & $flag) {
                    $fieldFlags[] = $value;
                }
            }

            return implode(" ", $fieldFlags);
        }

        protected static function getFieldType($what)
        {
            $types = [
                MYSQLI_TYPE_STRING => 'string',
                MYSQLI_TYPE_VAR_STRING => 'string',
                MYSQLI_TYPE_ENUM => 'string',
                MYSQLI_TYPE_SET => 'string',

                MYSQLI_TYPE_LONG => 'int',
                MYSQLI_TYPE_TINY => 'int',
                MYSQLI_TYPE_SHORT => 'int',
                MYSQLI_TYPE_INT24 => 'int',
                MYSQLI_TYPE_CHAR => 'int',
                MYSQLI_TYPE_LONGLONG => 'int',

                MYSQLI_TYPE_DECIMAL => 'real',
                MYSQLI_TYPE_FLOAT => 'real',
                MYSQLI_TYPE_DOUBLE => 'real',
                MYSQLI_TYPE_NEWDECIMAL => 'real',

                MYSQLI_TYPE_TINY_BLOB => 'blob',
                MYSQLI_TYPE_MEDIUM_BLOB => 'blob',
                MYSQLI_TYPE_LONG_BLOB => 'blob',
                MYSQLI_TYPE_BLOB => 'blob',

                MYSQLI_TYPE_NEWDATE => 'date',
                MYSQLI_TYPE_DATE => 'date',
                MYSQLI_TYPE_TIME => 'time',
                MYSQLI_TYPE_YEAR => 'year',
                MYSQLI_TYPE_DATETIME => 'datetime',
                MYSQLI_TYPE_TIMESTAMP => 'timestamp',

                MYSQLI_TYPE_NULL => 'null',

                MYSQLI_TYPE_GEOMETRY => 'geometry',
            ];

            return isset($types[$what]) ? $types[$what] : "unknown";
        }

        protected static function escapeChar($char)
        {
            switch ($char) {
                case "\0":
                    $esc = "\\0";
                    break;
                case "\n":
                    $esc = "\\n";
                    break;
                case "\r":
                    $esc = "\\r";
                    break;
                case '\\':
                case '\'':
                case '"':
                    $esc = "\\{$char}";
                    break;
                case "\032":
                    $esc = "\\Z";
                    break;
                default:
                    $esc = $char;
                    break;
            }
            
            return $esc;
        }
    }
}


1		<?php
2		namespace {
3
4		if (!function_exists('\mysql_connect')) {
5		define ('MYSQL_ASSOC', 1);
6		define ('MYSQL_NUM', 2);
7		define ('MYSQL_BOTH', 3);
8		define ('MYSQL_CLIENT_COMPRESS', 32);
9		define ('MYSQL_CLIENT_SSL', 2048);
10		define ('MYSQL_CLIENT_INTERACTIVE', 1024);
11		define ('MYSQL_CLIENT_IGNORE_SPACE', 256);
12
13		function mysql_connect(
14		$hostname = null,
15		$username = null,
16		$password = null,
17		$new = false,
18		$flags = 0
19		) {
20	52	if ($new !== false) {
21	1	trigger_error('Argument $new is no longer supported in PHP > 7', E_USER_WARNING);
22		}
23	51	if (null === $hostname) {
24	1	$hostname = ini_get('mysqli.default_host') ?: null;
25		}
26	51	if (null === $username) {
27	1	$username = ini_get('mysqli.default_user') ?: null;
28		}
29	51	if (null === $password) {
30	49	$password = ini_get('mysqli.default_pw') ?: null;
31		}
32
33	51	$hash = sha1($hostname . $username . $flags);
34	51	if ($hostname{1} != ':' && isset(\Dshafik\MySQL::$connections[$hash])) {
35	10	\Dshafik\MySQL::$last_connection = \Dshafik\MySQL::$connections[$hash]['conn'];
36	10	\Dshafik\MySQL::$connections[$hash]['refcount'] += 1;
37	10	return \Dshafik\MySQL::$connections[$hash]['conn'];
38		}
39
40	42	if ($flags === 0) {
41	40	\Dshafik\MySQL::$last_connection = $conn = mysqli_connect($hostname, $username, $password);
42	39	$conn->hash = $hash;
43	39	\Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];
44
45	39	return $conn;
46		}
47
48		try {
49	2	\Dshafik\MySQL::$last_connection = $conn = mysqli_init();
50
51	2	mysqli_real_connect(
52		$conn,
53		$hostname,
54		$username,
55		$password,
56	2	'',
57	2	null,
58	2	'',
59		$flags
60		);
61
62		// @codeCoverageIgnoreStart
63		// PHPUnit turns the warning from mysqli_real_connect into an exception, so this never runs
64		if ($conn === false) {
65		return false;
66		}
67		// @codeCoverageIgnoreEnd
68
69	1	$conn->hash = $hash;
70	1	\Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];
71
72	1	return $conn;
73	1	} catch (\Throwable $e) {
74	1	trigger_error($e->getMessage(), E_USER_WARNING);
75		// @codeCoverageIgnoreStart
76		// PHPUnit turns the warning into an exception, so this never runs
77		return false;
78		// @codeCoverageIgnoreEnd
79		}
80		}
81
82		function mysql_pconnect(
83		$hostname = null,
84		$username = null,
85		$password = null,
86		$flags = 0
87		) {
88	1	$hostname = 'p:' . $hostname;
89	1	return mysql_connect($hostname, $username, $password, false, $flags);
90		}
91
92		function mysql_close(\mysqli $link = null)
93		{
94	75	$isDefault = ($link === null);
95
96	75	$link = \Dshafik\MySQL::getConnection($link, __FUNCTION__);
97	75	if ($link === null) {
98		// @codeCoverageIgnoreStart
99		// PHPUnit Warning -> Exception
100		return false;
101		// @codeCoverageIgnoreEnd
102		}
103
104	75	if (isset(\Dshafik\MySQL::$connections[$link->hash])) {
105	49	\Dshafik\MySQL::$connections[$link->hash]['refcount'] -= 1;
106		}
107
108	75	$return = true;
109	75	if (\Dshafik\MySQL::$connections[$link->hash]['refcount'] == 0) {
110	66	$return = mysqli_close($link);
111	66	unset(\Dshafik\MySQL::$connections[$link->hash]);
112		}
113
114	75	if ($isDefault) {
115	75	Dshafik\MySQL::$last_connection = null;
116		}
117
118	75	return $return;
119		}
120
121		function mysql_select_db($databaseName, \mysqli $link = null)
122		{
123	42	$link = \Dshafik\MySQL::getConnection($link);
124
125	42	return mysqli_query(
126		$link,
127	42	"USE " . mysqli_real_escape_string($link, $databaseName)
128	42	) !== false;
129		}
130
131		function mysql_query($query, \mysqli $link = null)
132		{
133	45	return mysqli_query(\Dshafik\MySQL::getConnection($link), $query);
134		}
135
136		function mysql_unbuffered_query($query, \mysqli $link = null)
137		{
138	4	$link = \Dshafik\MySQL::getConnection($link);
139	4	if (mysqli_real_query($link, $query)) {
140	3	return mysqli_use_result($link);
141		}
142
143	1	return false;
144		}
145
146		function mysql_db_query($databaseName, $query, \mysqli $link = null)
147		{
148	2	if (mysql_select_db($databaseName, $link)) {
149	1	return mysql_query($query, $link);
150		}
151	1	return false;
152		}
153
154		function mysql_list_dbs(\mysqli $link = null)
155		{
156	1	return mysql_query("SHOW DATABASES", $link);
157		}
158
159		function mysql_list_tables($databaseName, \mysqli $link = null)
160		{
161	2	$link = \Dshafik\MySQL::getConnection($link);
162	2	return mysql_query("SHOW TABLES FROM " . mysql_real_escape_string($databaseName, $link), $link);
163		}
164
165		function mysql_list_fields($databaseName, $tableName, \mysqli $link = null)
166		{
167	2	$link = \Dshafik\MySQL::getConnection($link);
168	2	$result = mysql_query(
169		"SHOW COLUMNS FROM " .
170	2	mysqli_real_escape_string($link, $databaseName) . "." .
171	2	mysqli_real_escape_string($link, $tableName),
172		$link
173		);
174
175	2	if ($result instanceof \mysqli_result) {
176	1	$result->table = $tableName;
177	1	return $result;
178		}
179
180	1	trigger_error("mysql_list_fields(): Unable to save MySQL query result", E_USER_WARNING);
181		// @codeCoverageIgnoreStart
182		return false;
183		// @codeCoverageIgnoreEnd
184		}
185
186		function mysql_list_processes(\mysqli $link = null)
187		{
188		return mysql_query("SHOW PROCESSLIST", $link);
189		}
190
191		function mysql_error(\mysqli $link = null)
192		{
193	28	return mysqli_error(\Dshafik\MySQL::getConnection($link));
194		}
195
196		function mysql_errno(\mysqli $link = null)
197		{
198	1	return mysqli_errno(\Dshafik\MySQL::getConnection($link));
199		}
200
201		function mysql_affected_rows(\mysqli $link = null)
202		{
203	1	return mysqli_affected_rows(\Dshafik\MySQL::getConnection($link));
204		}
205
206		function mysql_insert_id($link = null) /\|/
207		{
208	1	return mysqli_insert_id(\Dshafik\MySQL::getConnection($link));
209		}
210
211		function mysql_result($result, $row, $field = 0)
212		{
213	7	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
214		// @codeCoverageIgnoreStart
215		return false;
216		// @codeCoverageIgnoreEnd
217		}
218
219	6	if (!mysqli_data_seek($result, $row)) {
220	1	trigger_error(
221		sprintf(
222	1	"mysql_result(): Unable to jump to row %d on MySQL result index %s",
223		$row,
224		spl_object_hash($result)
225		),
226	1	E_USER_WARNING
227		);
228		// @codeCoverageIgnoreStart
229		return false;
230		// @codeCoverageIgnoreEnd
231		}
232
233	5	$found = true;
234	5	if (strpos($field, ".") !== false) {
235	3	list($table, $name) = explode(".", $field);
236	3	$i = 0;
237	3	$found = false;
238	3	mysqli_field_seek($result, 0);
239	3	while ($column = mysqli_fetch_field($result)) {
240	3	if ($column->table == $table && $column->name == $name) {
241	2	$field = $i;
242	2	$found = true;
243	2	break;
244		}
245	3	$i++;
246		}
247		}
248
249	5	$row = mysql_fetch_array($result);
250	5	if ($found && array_key_exists($field, $row)) {
251	3	return $row[$field];
252		}
253
254	2	trigger_error(
255		sprintf(
256	2	"%s(): %s not found in MySQL result index %s",
257	2	__FUNCTION__,
258		$field,
259		spl_object_hash($result)
260		),
261	2	E_USER_WARNING
262		);
263		// @codeCoverageIgnoreStart
264		return false;
265		// @codeCoverageIgnoreEnd
266		}
267
268		function mysql_num_rows($result)
269		{
270	12	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
271		// @codeCoverageIgnoreStart
272		return false;
273		// @codeCoverageIgnoreEnd
274		}
275
276	11	$previous = error_reporting(0);
277	11	$rows = mysqli_num_rows($result);
278	11	error_reporting($previous);
279
280	11	return $rows;
281		}
282
283		function mysql_num_fields($result)
284		{
285	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
286		// @codeCoverageIgnoreStart
287		return false;
288		// @codeCoverageIgnoreEnd
289		}
290	1	return mysqli_num_fields($result);
291		}
292
293		function mysql_fetch_row($result)
294		{
295	6	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
296		// @codeCoverageIgnoreStart
297		return false;
298		// @codeCoverageIgnoreEnd
299		}
300	5	return mysqli_fetch_row($result) ?: false;
301		}
302
303		function mysql_fetch_array($result)
304		{
305	8	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
306		// @codeCoverageIgnoreStart
307		return false;
308		// @codeCoverageIgnoreEnd
309		}
310	7	return mysqli_fetch_array($result) ?: false;
311		}
312
313		function mysql_fetch_assoc($result) /* : array\|null */
314		{
315	7	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
316		// @codeCoverageIgnoreStart
317		return false;
318		// @codeCoverageIgnoreEnd
319		}
320
321	6	return mysqli_fetch_assoc($result) ?: false;
322		}
323
324		function mysql_fetch_object($result, $class = null, array $params = []) /* : object\|null */
325		{
326	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
327		// @codeCoverageIgnoreStart
328		return false;
329		// @codeCoverageIgnoreEnd
330		}
331
332	2	if ($class == null) {
333	2	$object = mysqli_fetch_object($result);
334		} else {
335		$object = mysqli_fetch_object($result, $class, $params);
336		}
337
338	2	return $object ?: false;
339		}
340
341		function mysql_data_seek($result, $offset)
342		{
343	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
344		// @codeCoverageIgnoreStart
345		return false;
346		// @codeCoverageIgnoreEnd
347		}
348		return mysqli_data_seek($result, $offset);
349		}
350
351		function mysql_fetch_lengths($result) /* : array\|*/
352		{
353	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
354		// @codeCoverageIgnoreStart
355		return false;
356		// @codeCoverageIgnoreEnd
357		}
358		return mysqli_fetch_lengths($result);
359		}
360
361		function mysql_fetch_field($result) /* : object\|*/
362		{
363	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
364		// @codeCoverageIgnoreStart
365		return false;
366		// @codeCoverageIgnoreEnd
367		}
368		return mysqli_fetch_field($result);
369		}
370
371		function mysql_field_seek($result, $field)
372		{
373	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
374		// @codeCoverageIgnoreStart
375		return false;
376		// @codeCoverageIgnoreEnd
377		}
378		return mysqli_field_seek($result, $field);
379		}
380
381		function mysql_free_result($result)
382		{
383	2	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
384		// @codeCoverageIgnoreStart
385		return false;
386		// @codeCoverageIgnoreEnd
387		}
388	1	return mysqli_free_result($result);
389		}
390
391		function mysql_field_name($result, $field)
392		{
393	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
394		// @codeCoverageIgnoreStart
395		return false;
396		// @codeCoverageIgnoreEnd
397		}
398	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'name');
399		}
400
401		function mysql_field_table($result, $field)
402		{
403	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
404		// @codeCoverageIgnoreStart
405		return false;
406		// @codeCoverageIgnoreEnd
407		}
408	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'table');
409		}
410
411		function mysql_field_len($result, $field)
412		{
413	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
414		// @codeCoverageIgnoreStart
415		return false;
416		// @codeCoverageIgnoreEnd
417		}
418	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'len');
419		}
420
421		function mysql_field_type($result, $field)
422		{
423	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
424		// @codeCoverageIgnoreStart
425		return false;
426		// @codeCoverageIgnoreEnd
427		}
428	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'type');
429		}
430
431		function mysql_field_flags($result, $field)
432		{
433	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
434		// @codeCoverageIgnoreStart
435		return false;
436		// @codeCoverageIgnoreEnd
437		}
438	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'flags');
439		}
440
441		function mysql_escape_string($unescapedString)
442		{
443	2	if (\Dshafik\MySQL::$last_connection == null) {
444	2	trigger_error(
445		sprintf(
446	2	"%s() is insecure; use mysql_real_escape_string() instead!",
447	2	__FUNCTION__
448		),
449	2	E_USER_NOTICE
450		);
451
452	1	return \Dshafik\MySQL::escapeString($unescapedString);
453		}
454		return mysql_real_escape_string($unescapedString, null);
455		}
456
457		function mysql_real_escape_string($unescapedString, \mysqli $link = null)
458		{
459	2	return mysqli_escape_string(\Dshafik\MySQL::getConnection($link), $unescapedString);
460		}
461
462		function mysql_stat(\mysqli $link = null)
463		{
464		return mysqli_stat(\Dshafik\MySQL::getConnection($link));
465		}
466
467		function mysql_thread_id(\mysqli $link = null)
468		{
469		return mysqli_thread_id(\Dshafik\MySQL::getConnection($link));
470		}
471
472		function mysql_client_encoding(\mysqli $link = null)
473		{
474		return mysqli_character_set_name(\Dshafik\MySQL::getConnection($link));
475		}
476
477		function mysql_ping(\mysqli $link = null)
478		{
479		return mysqli_ping($link);
480		}
481
482		function mysql_get_client_info(\mysqli $link = null)
483		{
484		return mysqli_get_client_info(\Dshafik\MySQL::getConnection($link));
485		}
486
487		function mysql_get_host_info(\mysqli $link = null)
488		{
489		return mysqli_get_host_info(\Dshafik\MySQL::getConnection($link));
490		}
491
492		function mysql_get_proto_info(\mysqli $link = null)
493		{
494		return mysqli_get_proto_info(\Dshafik\MySQL::getConnection($link));
495		}
496
497		function mysql_get_server_info(\mysqli $link = null)
498		{
499		return mysqli_get_server_info(\Dshafik\MySQL::getConnection($link));
500		}
501
502		function mysql_info(\mysqli $link = null)
503		{
504		return mysqli_info(\Dshafik\MySQL::getConnection($link));
505		}
506
507		function mysql_set_charset($charset, \mysqli $link = null)
508		{
509		return mysqli_set_charset(\Dshafik\MySQL::getConnection($link), $charset);
510		}
511
512		function mysql_db_name($result, $row)
513		{
514	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
515		// @codeCoverageIgnoreStart
516		return false;
517		// @codeCoverageIgnoreEnd
518		}
519
520		// Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#319
521		return mysql_result($result, $row, 'Database');
522		}
523
524		function mysql_tablename($result, $row)
525		{
526	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
527		// @codeCoverageIgnoreStart
528		return false;
529		// @codeCoverageIgnoreEnd
530		}
531
532		// Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#321
533		return mysql_result($result, $row, 'Table');
534		}
535
536		/* Aliases */
537
538		function mysql_fieldname(... $args)
539		{
540		return mysql_field_name(... $args);
541		}
542
543		function mysql_fieldtable(... $args)
544		{
545		return mysql_field_table(... $args);
546		}
547
548		function mysql_fieldlen(... $args)
549		{
550		return mysql_field_len(... $args);
551		}
552
553		function mysql_fieldtype(... $args)
554		{
555		return mysql_field_type(... $args);
556		}
557
558		function mysql_fieldflags(... $args)
559		{
560		return mysql_field_flags(... $args);
561		}
562
563		function mysql_selectdb(... $args)
564		{
565		return mysql_select_db(... $args);
566		}
567
568		function mysql_freeresult(... $args)
569		{
570		return mysql_free_result(... $args);
571		}
572
573		function mysql_numfields(... $args)
574		{
575		return mysql_num_fields(... $args);
576		}
577
578		function mysql_numrows(... $args)
579		{
580		return mysql_num_rows(... $args);
581		}
582
583		function mysql_listdbs(... $args)
584		{
585		return mysql_list_dbs(... $args);
586		}
587
588		function mysql_listtables(... $args)
589		{
590		return mysql_list_tables(... $args);
591		}
592
593		function mysql_listfields(... $args)
594		{
595		return mysql_list_fields(... $args);
596		}
597
598		function mysql_dbname(... $args)
599		{
600		return mysql_db_name(... $args);
601		}
602
603		function mysql_table_name(... $args)
604		{
605		return mysql_tablename(... $args);
606		}
607		}
608		}
609
610		namespace Dshafik {
611
612		class MySQL
613		{
614		public static $last_connection = null;
615		public static $connections = [];
616
617	75	public static function getConnection($link = null, $func = null)
618		{
619	75	if ($link !== null) {
620	7	return $link;
621		}
622
623	75	if (static::$last_connection === null) {
624	26	$err = "A link to the server could not be established";
625	26	if ($func !== null) {
626	26	$err = $func . "(): no MySQL-Link resource supplied";
627		}
628	26	trigger_error($err, E_USER_WARNING);
629	26	return false;
630		}
631
632	50	return static::$last_connection;
633		}
634
635	6	public static function mysqlFieldInfo(\mysqli_result $result, $field, $what)
636		{
637		try {
638	6	$field = mysqli_fetch_field_direct($result, $field);
639	5	} catch (\Exception $e) {
640	5	trigger_error(
641		sprintf(
642	5	"mysql_field_%s(): Field %d is invalid for MySQL result index %s",
643		$what,
644		$field,
645		spl_object_hash($result)
646		),
647	5	E_USER_WARNING
648		);
649		// @codeCoverageIgnoreStart
650		// PHPUnit turns the warning into an exception, so this never runs
651		return false;
652		// @codeCoverageIgnoreEnd
653		}
654
655	1	if ($what == 'name' \|\| $what == 'table') {
656	1	return $field->{$what};
657		}
658
659	1	if ($what == 'len') {
660	1	return $field->length;
661		}
662
663	1	if ($what == 'type') {
664	1	return static::getFieldType($field->type);
665		}
666
667	1	if ($what == 'flags') {
668	1	return static::getFieldFlags($field->flags);
669		}
670
671		return false;
672		}
673
674	50	public static function checkValidResult($result, $function)
675		{
676	50	if (!($result instanceof \mysqli_result)) {
677	20	if ($function != "mysql_fetch_object") {
678	19	trigger_error(
679	19	$function . "() expects parameter 1 to be resource, " . strtolower(gettype($result)) . " given",
680	19	E_USER_WARNING
681		);
682		}
683
684	1	if ($function == "mysql_fetch_object") {
685	1	trigger_error(
686	1	$function . "(): supplied argument is not a valid MySQL result resource",
687	1	E_USER_WARNING
688		);
689		}
690		return false;
691		}
692
693	30	}
694
695	1	public static function escapeString($unescapedString)
696		{
697	1	$escapedString = "";
698	1	for ($i = 0; $i < strlen($unescapedString); $i++) {
699	1	$escapedString .= self::escapeChar($unescapedString{$i});
700		}
701
702	1	return $escapedString;
703		}
704
705	1	protected static function getFieldFlags($what)
706		{
707		// Order of flags taken from http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#2507
708		$flags = [
709	1	MYSQLI_NOT_NULL_FLAG => "not_null",
710	1	MYSQLI_PRI_KEY_FLAG => "primary_key",
711	1	MYSQLI_UNIQUE_KEY_FLAG => "unique_key",
712	1	MYSQLI_MULTIPLE_KEY_FLAG => "multiple_key",
713	1	MYSQLI_BLOB_FLAG => "blob",
714	1	MYSQLI_UNSIGNED_FLAG => "unsigned",
715	1	MYSQLI_ZEROFILL_FLAG => "zerofill",
716	1	MYSQLI_BINARY_FLAG => "binary",
717	1	MYSQLI_ENUM_FLAG => "enum",
718	1	MYSQLI_SET_FLAG => "set",
719	1	MYSQLI_AUTO_INCREMENT_FLAG => "auto_increment",
720	1	MYSQLI_TIMESTAMP_FLAG => "timestamp",
721		];
722
723	1	$fieldFlags = [];
724	1	foreach ($flags as $flag => $value) {
725	1	if ($what & $flag) {
726	1	$fieldFlags[] = $value;
727		}
728		}
729
730	1	return implode(" ", $fieldFlags);
731		}
732
733	1	protected static function getFieldType($what)
734		{
735		$types = [
736	1	MYSQLI_TYPE_STRING => 'string',
737	1	MYSQLI_TYPE_VAR_STRING => 'string',
738	1	MYSQLI_TYPE_ENUM => 'string',
739	1	MYSQLI_TYPE_SET => 'string',
740
741	1	MYSQLI_TYPE_LONG => 'int',
742	1	MYSQLI_TYPE_TINY => 'int',
743	1	MYSQLI_TYPE_SHORT => 'int',
744	1	MYSQLI_TYPE_INT24 => 'int',
745	1	MYSQLI_TYPE_CHAR => 'int',
746	1	MYSQLI_TYPE_LONGLONG => 'int',
747
748	1	MYSQLI_TYPE_DECIMAL => 'real',
749	1	MYSQLI_TYPE_FLOAT => 'real',
750	1	MYSQLI_TYPE_DOUBLE => 'real',
751	1	MYSQLI_TYPE_NEWDECIMAL => 'real',
752
753	1	MYSQLI_TYPE_TINY_BLOB => 'blob',
754	1	MYSQLI_TYPE_MEDIUM_BLOB => 'blob',
755	1	MYSQLI_TYPE_LONG_BLOB => 'blob',
756	1	MYSQLI_TYPE_BLOB => 'blob',
757
758	1	MYSQLI_TYPE_NEWDATE => 'date',
759	1	MYSQLI_TYPE_DATE => 'date',
760	1	MYSQLI_TYPE_TIME => 'time',
761	1	MYSQLI_TYPE_YEAR => 'year',
762	1	MYSQLI_TYPE_DATETIME => 'datetime',
763	1	MYSQLI_TYPE_TIMESTAMP => 'timestamp',
764
765	1	MYSQLI_TYPE_NULL => 'null',
766
767	1	MYSQLI_TYPE_GEOMETRY => 'geometry',
768		];
769
770	1	return isset($types[$what]) ? $types[$what] : "unknown";
771		}
772
773	1	protected static function escapeChar($char)
774		{
775		switch ($char) {
776	1	case "\0":
777	1	$esc = "\\0";
778	1	break;
779	1	case "\n":
780	1	$esc = "\\n";
781	1	break;
782	1	case "\r":
783	1	$esc = "\\r";
784	1	break;
785	1	case '\\':
786	1	case '\'':
787	1	case '"':
788	1	$esc = "\\{$char}";
789	1	break;
790	1	case "\032":
791	1	$esc = "\\Z";
792	1	break;
793		default:
794	1	$esc = $char;
795	1	break;
796		}
797
798	1	return $esc;
799		}
800		}
801		}
802

dshafik / php7-mysql-shim

Push — master ( e198b7...7f0c36 )

mysql.php ➔ mysql_connect() D

Complexity

Size

Duplication

Code Coverage

Importance

How to fix Long Method Complexity

Long Method

Duplication Side-by-Side

Filter issues like