How to implement regular matching operation in PHP

This article mainly introduces the PHP regular matching operation, and combines a simple example to analyze the preg_match_all in PHP to obtain the content of the P element and img src element in the HTML tag. Friends in need can refer to it

          

            
            

            
幸福领地
          

        
        
          

            
            

            
一世情长
          

        
EOT;
if(preg_match_all('%(.*?)
%si', $str, $matches)) {
  $arr[0][] = $matches[1];
}
if(preg_match_all('/src="([^<]*)" >/i', $str, $matches)) {
  $arr[1][] = $matches[1];
}
print_r($arr);
exit;
?>

The running results are as follows:

Array
(
  [0] => Array
    (
      [0] => Array
        (
          [0] => 幸福领地
          [1] => 一世情长
        )
    )
  [1] => Array
    (
      [0] => Array
        (
          [0] => http://www/template9/yunqingjian/jianjie/68.jpg
          [1] => http://www/template9/yunqingjian/jianjie/69.jpg
        )
    )
)

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