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<?php |
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/** |
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* General functions to use in img.php. |
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*/ |
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/** |
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* Trace and log execution to logfile, useful for debugging and development. |
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* |
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* @param string $msg message to log to file. |
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* |
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* @return void |
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*/ |
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function trace($msg) |
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{ |
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$file = CIMAGE_DEBUG_FILE; |
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if (!is_writable($file)) { |
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return; |
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} |
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$timer = number_format((microtime(true) - $_SERVER["REQUEST_TIME_FLOAT"]), 6); |
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$details = "{$timer}ms"; |
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$details .= ":" . round(memory_get_peak_usage()/1024/1024, 3) . "MB"; |
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$details .= ":" . count(get_included_files()); |
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file_put_contents($file, "$details:$msg\n", FILE_APPEND); |
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} |
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/** |
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* Display error message. |
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* |
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* @param string $msg to display. |
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* @param int $type of HTTP error to display. |
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* |
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* @return void |
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*/ |
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function errorPage($msg, $type = 500) |
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{ |
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global $mode; |
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switch ($type) { |
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case 403: |
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$header = "403 Forbidden"; |
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break; |
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case 404: |
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$header = "404 Not Found"; |
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break; |
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default: |
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$header = "500 Internal Server Error"; |
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} |
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if ($mode == "strict") { |
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$header = "404 Not Found"; |
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} |
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header("HTTP/1.0 $header"); |
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if ($mode == "development") { |
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die("[img.php] $msg"); |
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} |
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error_log("[img.php] $msg"); |
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die("HTTP/1.0 $header"); |
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} |
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/** |
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* Get input from query string or return default value if not set. |
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* |
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* @param mixed $key as string or array of string values to look for in $_GET. |
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* @param mixed $default value to return when $key is not set in $_GET. |
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* |
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* @return mixed value from $_GET or default value. |
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*/ |
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function get($key, $default = null) |
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{ |
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if (is_array($key)) { |
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foreach ($key as $val) { |
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if (isset($_GET[$val])) { |
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return $_GET[$val]; |
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} |
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} |
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} elseif (isset($_GET[$key])) { |
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return $_GET[$key]; |
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} |
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return $default; |
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} |
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/** |
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* Get input from query string and set to $defined if defined or else $undefined. |
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* |
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* @param mixed $key as string or array of string values to look for in $_GET. |
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* @param mixed $defined value to return when $key is set in $_GET. |
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* @param mixed $undefined value to return when $key is not set in $_GET. |
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* |
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* @return mixed value as $defined or $undefined. |
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*/ |
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function getDefined($key, $defined, $undefined) |
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{ |
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return get($key) === null ? $undefined : $defined; |
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} |
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/** |
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* Get value of input from query string or else $undefined. |
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* |
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* @param mixed $key as string or array of string values to look for in $_GET. |
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* @param mixed $undefined value to return when $key has no, or empty value in $_GET. |
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* |
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* @return mixed value as or $undefined. |
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*/ |
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function getValue($key, $undefined) |
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{ |
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$val = get($key); |
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if (is_null($val) || $val === "") { |
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return $undefined; |
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} |
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return $val; |
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} |
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/** |
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* Get value from config array or default if key is not set in config array. |
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* |
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* @param string $key the key in the config array. |
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* @param mixed $default value to be default if $key is not set in config. |
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* |
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* @return mixed value as $config[$key] or $default. |
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*/ |
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function getConfig($key, $default) |
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{ |
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global $config; |
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return isset($config[$key]) |
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? $config[$key] |
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: $default; |
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} |
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/** |
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* Log when verbose mode, when used without argument it returns the result. |
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* |
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* @param string $msg to log. |
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* |
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* @return void or array. |
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*/ |
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function verbose($msg = null, $arg = "") |
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{ |
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global $verbose, $verboseFile; |
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static $log = array(); |
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if (!($verbose || $verboseFile)) { |
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return; |
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} |
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if (is_null($msg)) { |
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return $log; |
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} |
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if (is_null($arg)) { |
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$arg = "null"; |
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} elseif ($arg === false) { |
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$arg = "false"; |
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} elseif ($arg === true) { |
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$arg = "true"; |
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} |
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$log[] = $msg . $arg; |
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} |
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/** |
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* Log when verbose mode, when used without argument it returns the result. |
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* |
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* @param string $msg to log. |
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* |
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* @return void or array. |
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*/ |
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function checkExternalCommand($what, $enabled, $commandString) |
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{ |
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$no = $enabled ? null : 'NOT'; |
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$text = "Post processing $what is $no enabled.<br>"; |
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list($command) = explode(" ", $commandString); |
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$no = is_executable($command) ? null : 'NOT'; |
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$text .= "The command for $what is $no an executable.<br>"; |
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return $text; |
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} |
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This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.