The regular function of PHP

PHP, like JavaScript, regular matching content is usually used//wrapped up, you can use other non-letters and numbers to play the same role, can not use \ \ \
$preg = '/demo/';

Preg_match

   
    $str = "abcdefgabcdbc";    $pattern = '/[da]bc/';    echo'preg_match:'.preg_match($pattern, $str).'
';    echo'preg_match_all:'.preg_match_all($pattern, $str,$matches).'
';    //preg_match_all匹配所有，并将其匹配项带入第三个参数 $matches    var_dump($matches); ?>//preg_match:1preg_match_all:3array(1) { [0]=> array(3) { [0]=> string(3) "abc" [1]=> string(3) "abc" [2]=> string(3) "dbc" } }

Preg_replace

    
     $str = '2014-11-25';    //使用（）包括起来代表一个单元，可以与${n}对应使用，匹配的第几个内容会带入对应的${n}$preg = '/(-)/';    $temp = 'Year';    echo preg_replace($preg,$temp.'${1}',$str);    echo'
';    $preg = array(        '/(\d+)/'    );    $temp = array(        'temp[${1}]'    );    echo preg_replace($preg,$temp,$str);?>//2014Year-11Year-25temp[2014]-temp[11]-temp[25]

Preg_split

    
     $str = '1+2-3/4*5';$pattern = '#[+-/*]#';$res = preg_split($pattern,$str);print_r($res);//Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 )

'). addclass (' pre-numbering '). Hide (); $ (this). addclass (' has-numbering '). Parent (). append ($numbering); for (i = 1; i <= lines; i++) {$numbering. Append ($ ('

'). Text (i)); }; $numbering. FadeIn (1700); }); });

The above describes the PHP regular function, including the aspects of the content, I hope the PHP tutorial interested in a friend helpful.

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