PHP 在 callback function 使用超過一個以上的變數

rogaPosted on June 28, 2012 Posted in Programming — 1 Comment ↓

這個問題在 PHP 5.3 非常好解決，因為有 anonymous function 可以用，但如果環境還停留在較早以前的 PHP 的話，可以用以下解法

workaround:

PHP

preg_replace_callback( $pattern, array(new rogaCallbackWrapper($a, $b, $c), 'process'), $data); class rogaCallbackWrapper { private $a; private $b; private $c; public function __construct($a, $b, $c) { $this->a = $a; $this->b = $b; $this->c = $c; } public function process(array $matches) { // do something return $this->a . $this->b . $this->c; } }

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preg_replace_callback(           $pattern,           array(new rogaCallbackWrapper($a, $b, $c), 'process'),           $data);   class rogaCallbackWrapper {     private $a;     private $b;     private $c;     public function __construct($a, $b, $c) {         $this->a = $a;         $this->b = $b;         $this->c = $c;     }     public function process(array $matches) {         // do something         return $this->a . $this->b . $this->c;     } }

anonymous function:

PHP

preg_replace_callback( $pattern, function ($a) use ($b, $c) { /* do something */ return $a . $b . $c; }, $subject);

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preg_replace_callback(           $pattern,           function ($a) use ($b, $c) { /* do something */ return $a . $b . $c; },           $subject);

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One comment on “PHP 在 callback function 使用超過一個以上的變數”

1. 網頁設計-watchit says:

   July 3, 2012 at 15:28

   感謝分享喔:>

   Reply

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