使用数组数据时preg_replace简单文本

Question

Let's just say I have a simple text:

testing testing testing http://www.youtube.com/watch?v=pzfAdmAtYIY more testing and random text http://www.youtube.com/watch?v=UZQ_RDb0lcE more text etc

And I also have simple array:

$arr = array('Samsung Mobile USA - El Plato Supreme', 'SET FIRE | DUBSTEP');

How to achieve this:

testing testing testing pzfAdmAtYIY Samsung Mobile USA - El Plato Supreme more testing and random text UZQ_RDb0lcE SET FIRE | DUBSTEP more text etc

My attempt:

$count = 0;
$text = 'testing testing testing http://www.youtube.com/watch?v=pzfAdmAtYIY more testing and random text http://www.youtube.com/watch?v=UZQ_RDb0lcE more text etc';
$arr = array('Samsung Mobile USA - El Plato Supreme', 'SET FIRE | DUBSTEP');
$string = preg_replace('/http:\/\/www.youtube.com\/watch\?v=([a-zA-Z0-9_-]*)/ms', ' \\1 '. $arr[$count++].'', $text);
print $string;

Unforunately the result:

testing testing testing pzfAdmAtYIY Samsung Mobile USA - El Plato Supreme more testing and random text UZQ_RDb0lcE Samsung Mobile USA - El Plato Supreme more text etc

Any help would be great.

Answer 1

You could do something like this with preg_replace_callback:

$str = 'testing testing testing http://www.youtube.com/watch?v=pzfAdmAtYIY more testing and random text http://www.youtube.com/watch?v=UZQ_RDb0lcE more text etc';

// either like this:
// $arr = array('Samsung Mobile USA - El Plato Supreme', 'SET FIRE | DUBSTEP');
// or via $GLOBALS array
$GLOBALS['arr'] = array('Samsung Mobile USA - El Plato Supreme', 'SET FIRE | DUBSTEP');


$str = preg_replace_callback('/http:\/\/www.youtube.com\/watch\?v=([a-zA-Z0-9_-]*)/ms', function($match) {
    // this is called for each match of the expression

    // sets a counter
    static $count = 0;        

    // making $arr a global variable
    // global $arr;

    // the return value
    // $r = $arr[$count];
    // or in case it is in the $GLOBALS
    $r = $GLOBALS['arr'][$count];
    // increase the counter
    $count++;
    // and return
    return $r;
}, $str);

echo $str;