常用HTML正则

<?php

//HTML a连接正则
$str = '';
$isMatched = preg_match('/<a.*?[^<]>.*?</a>/', $str, $matches);
var_dump($isMatched, $matches);


//HTML js正则
$str = '';
$isMatched = preg_match('/<script[sS]*?</script>/', $str, $matches);
var_dump($isMatched, $matches);

//HTML img正则
$str = '';
$isMatched = preg_match('/<img[^>]*>/', $str, $matches);
var_dump($isMatched, $matches);