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<?php |
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/** |
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* Author: Nil Portugués Calderó <[email protected]> |
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* Date: 10/31/15 |
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* Time: 11:24 PM |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace NilPortugues\BackslashFixer\Fixer; |
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/** |
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* Class FunctionRepository |
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* @package NilPortugues\BackslashFixer\Fixer |
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*/ |
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class FunctionRepository |
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{ |
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/** |
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* @var array |
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*/ |
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private static $backslashable = []; |
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/** |
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* @var array |
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*/ |
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private static $functions = []; |
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/** |
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* |
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*/ |
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public function __construct() |
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{ |
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self::$functions = \array_map('strtolower', \get_defined_functions()['internal']); |
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self::$functions = \array_combine(\array_values(self::$functions), self::$functions); |
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ksort(self::$functions, \SORT_REGULAR); |
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} |
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/** |
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* Search backwards starting from haystack length characters from the end |
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* |
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* @param $haystack |
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* @param $needle |
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* @return bool |
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*/ |
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private static function startsWith($haystack, $needle) |
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{ |
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return $needle === "" || strrpos($haystack, $needle, -\strlen($haystack)) !== \false; |
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} |
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/** |
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* @return array |
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*/ |
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public static function getBackslashableFunctions() |
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{ |
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if (!empty(self::$backslashable)) { |
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return self::$backslashable; |
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} |
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self::$backslashable = []; |
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foreach (self::$functions as $name => $value) { |
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if (\true === self::startsWith('is_', $value)) { |
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$backslashable[$name] = $value; |
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} |
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} |
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self::$backslashable['strlen'] = 'strlen'; |
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self::$backslashable['defined'] = 'defined'; |
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self::$backslashable['call_user_func'] = 'call_user_func'; |
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self::$backslashable['call_user_func_array'] = 'call_user_func_array'; |
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return self::$backslashable; |
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} |
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} |
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nilportugues /
php_backslasher
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.