Zval::getRefCount() - Code Metrics - Inspection of "新增Zval类，用于实现对变量的检查" - yiranzai/php-tools - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 42cc05...b677af )

by duan

created 2019-04-14 10:22 UTC

Zval::getRefCount() A

↳ Parent: Zval

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes

Metric	Value
eloc	2
dl	0
loc	4
ccs	0
cts	4
cp	0
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	1
crap	2

<?php


namespace Yiranzai\Tools;

/**
 * Class Zval
 * @package Yiranzai\Tools
 */
class Zval
{
    /**
     * @param $var
     * @return bool
     */
    public static function isRef($var): bool
    {
        $info = self::getZvalRefCountInfo($var);
        return (boolean)$info['is_ref'];
    }

    /**
     * @param $var
     * @return mixed
     */
    public static function getRefCount($var)
    {
        $info = self::getZvalRefCountInfo($var);
        return $info['refcount'];
    }

    /**
     * @param $var
     * @return bool
     */
    public static function canCopyOnWrite($var): bool
    {
        $info = self::getZvalRefCountInfo($var);
        return $info['is_ref'] === 0;
    }

    /**
     * @param $var
     * @return bool
     */
    public static function canReferenceWithoutCopy($var): bool
    {
        $info = self::getZvalRefCountInfo($var);
        return $info['is_ref'] === 1 || $info['refcount'] === 1;
    }

    /**
     * @param $var
     * @return array
     */
    public static function getZvalRefCountInfo($var): array
    {
        ob_start();
        xdebug_debug_zval($var);
        $info = ob_get_clean();
        preg_match('(: \(refcount=(\d+), is_ref=(\d+)\))', $info, $match);
        return array('refcount' => (int)$match[1], 'is_ref' => (int)$match[2]);
    }

    /**
     * @param $a
     * @param $b
     * @return bool
     */
    public static function isRefto(&$a, &$b): bool
    {
        if ($a !== $b) {
            return false;
        }
        $t = $a;
        if ($r = ($b === ($a = 1))) {
            $r = ($b === ($a = 0));
        }
        $a = $t;
        return $r;
    }

    /**
     * @param $a
     * @param $b
     * @return bool
     */
    public static function isReferenceOf(&$a, &$b): bool
    {
        if (!self::isRef('a') || self::getZvalRefCountInfo('a') !== self::getZvalRefCountInfo('b')) {
            return false;
        }
        $tmp = $a;
        if (is_object($a) || is_array($a)) {
            $a   = 'test';
            $ret = $b === 'test';
            $a   = $tmp;
        } else {
            $a   = [];
            $ret = $b === [];
            $a   = $tmp;
        }
        return $ret;
    }
}


1			<?php
2
3
4			namespace Yiranzai\Tools;
5
6			/**
7			* Class Zval
8			* @package Yiranzai\Tools
9			*/
10			class Zval
11			{
12			/**
13			* @param $var
14			* @return bool
15			*/
16			public static function isRef($var): bool
17			{
18			$info = self::getZvalRefCountInfo($var);
19			return (boolean)$info['is_ref'];
20			}
21
22			/**
23			* @param $var
24			* @return mixed
25			*/
26			public static function getRefCount($var)
27			{
28			$info = self::getZvalRefCountInfo($var);
29			return $info['refcount'];
30			}
31
32			/**
33			* @param $var
34			* @return bool
35			*/
36			public static function canCopyOnWrite($var): bool
37			{
38			$info = self::getZvalRefCountInfo($var);
39			return $info['is_ref'] === 0;
40			}
41
42			/**
43			* @param $var
44			* @return bool
45			*/
46			public static function canReferenceWithoutCopy($var): bool
47			{
48			$info = self::getZvalRefCountInfo($var);
49			return $info['is_ref'] === 1 \|\| $info['refcount'] === 1;
50			}
51
52			/**
53			* @param $var
54			* @return array
55			*/
56			public static function getZvalRefCountInfo($var): array
57			{
58			ob_start();
59			xdebug_debug_zval($var);
60			$info = ob_get_clean();
61			preg_match('(: \(refcount=(\d+), is_ref=(\d+)\))', $info, $match);
62			return array('refcount' => (int)$match[1], 'is_ref' => (int)$match[2]);
63			}
64
65			/**
66			* @param $a
67			* @param $b
68			* @return bool
69			*/
70			public static function isRefto(&$a, &$b): bool
71			{
72			if ($a !== $b) {
73			return false;
74			}
75			$t = $a;
76			if ($r = ($b === ($a = 1))) {
77			$r = ($b === ($a = 0));
78			}
79			$a = $t;
80			return $r;
81			}
82
83			/**
84			* @param $a
85			* @param $b
86			* @return bool
87			*/
88			public static function isReferenceOf(&$a, &$b): bool
89			{
90			if (!self::isRef('a') \|\| self::getZvalRefCountInfo('a') !== self::getZvalRefCountInfo('b')) {
91			return false;
92			}
93			$tmp = $a;
94			if (is_object($a) \|\| is_array($a)) {
95			$a = 'test';
96			$ret = $b === 'test';
97			$a = $tmp;
98			} else {
99			$a = [];
100			$ret = $b === [];
101			$a = $tmp;
102			}
103			return $ret;
104			}
105			}
106

yiranzai / php-tools

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Zval::getRefCount() A

Complexity

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