php隐藏手机号中间四位的方法:1、字符串截取法【$new_tel1=substr($tel, 0, 3).'****'.substr($tel, 7)】;2、替换字符串的子串【$new_tel=substr_replace($tel)】。
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php隐藏手机号中间四位的方法:
$num = "12345678910" $str = substr_replace($num,'****',3,4);
三种实现方式
<?php $tel = '12345678910'; //1.字符串截取法 $new_tel1 = substr($tel, 0, 3).'****'.substr($tel, 7); var_dump($new_tel1); //2.替换字符串的子串 $new_tel2 = substr_replace($tel, '****', 3, 4); var_dump($new_tel2); //3.用正则 $new_tel3 = preg_replace('/(d{3})d{4}(d{4})/', '$1****$2', $tel); var_dump($new_tel3); ?>
结果:
> string(11) "123****8910" > string(11) "123****8910" > string(11) "123****8910"
想了解