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PHP function to escape regular expression characters

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Release： 2016-07-25 08:55:58
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  2. $str = preg_quote( " /d{3}(-d{4})/ " );
  3. echo $str;
  4. ?>
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Results : /\d{3}(\-\d{4})/

Example 2,

  2. $str = preg_quote( " /d{3}(-d{4})/ " , " 3 " );
  3. echo $str;
  4. ?>
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Results: /\d{3}(\-\d{4})/

The main difference between the above two examples: It’s the “3” in the red area. In the second example, “3” is also escaped.



Related labels：
PHP转义正则表达式字符的函数
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