PHP常用正则表达式

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匹配单引号或双引号之间的内容

源字符串:

<div class="ts-background-image ts-animate ts-scale" data-bg-image="assets/img/bg/11.png"></div><div class="ts-background-image ts-animate ts-scale" data-bg-image='assets/img/bg/22.jpg'></div><form class="ts-form ts-form-email" data-php-path="assets/php/email.php"></form>

正则一:

([\"\'])([^"\.]*\.[^"]{2,4})\1

PHP代码;

preg_match_all('/([\"\'])([^"\.]*\.[^"]{2,4})\1/', $txt, $matches);
var_dump($matches);die;

匹配结果:


array(3) { [0]=> array(3) { [0]=> string(22) ""assets/img/bg/11.png"" [1]=> string(22) "'assets/img/bg/22.jpg'" [2]=> string(22) ""assets/php/email.php"" } [1]=> array(3) { [0]=> string(1) """ [1]=> string(1) "'" [2]=> string(1) """ } [2]=> array(3) { [0]=> string(20) "assets/img/bg/11.png" [1]=> string(20) "assets/img/bg/22.jpg" [2]=> string(20) "assets/php/email.php" } }

正则二(限定了指定的后缀):

([\"\'])([^\"\.]*\.(png|jpg|svg|gif|jpeg|html))\1

匹配结果:

array(4) {
  [0]=>
  array(2) {
    [0]=>
    string(22) ""assets/img/bg/11.png""
    [1]=>
    string(22) "'assets/img/bg/22.jpg'"
  }
  [1]=>
  array(2) {
    [0]=>
    string(1) """
    [1]=>
    string(1) "'"
  }
  [2]=>
  array(2) {
    [0]=>
    string(20) "assets/img/bg/11.png"
    [1]=>
    string(20) "assets/img/bg/22.jpg"
  }
  [3]=>
  array(2) {
    [0]=>
    string(3) "png"
    [1]=>
    string(3) "jpg"
  }
}

正则表达式测试工具

RegexBuddy

在线测试工具

https://regex101.com/

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