PHP How to replace 13412343312 into 134****3312

PHP How to replace 13412343312 to 134 **3312

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PHP How to replace 13412343312 into 134**3312

To be honest, I just learned the first day of PHP ... Do you mean to take the first 3 digits of the cell phone number and then 4?

Substr_replace (' 13412343312 ', ' * * ', 3,6);

Organize the usual characters to hide

//字段文字内容隐藏处理方法function hidecard($cardnum,$type=1,$default=""){    if(empty($cardnum)) {        return $default;    }    if($type==1){        $cardnum = substr($cardnum,0,3).str_repeat("*",12).substr($cardnum,strlen($cardnum)-4);//身份证    }elseif($type==2){        $cardnum = substr($cardnum,0,3).str_repeat("*",5).substr($cardnum,strlen($cardnum)-4);//手机号    }elseif($type==3){        $cardnum = str_repeat("*",strlen($cardnum)-4).substr($cardnum,strlen($cardnum)-4);//银行卡    }elseif($type==4){        $cardnum = substr($cardnum,0,3).str_repeat("*",strlen($cardnum)-3);//用户名    }elseif($type==5){        $cardnum = substr($cardnum,0,3).str_repeat("*",3).substr($cardnum,strlen($cardnum)-3);//新用户名    }    return $cardnum;}

13412343312134****3312echo substr_replace('13412343312', '****', 3, 4);3表示从第几个字符开始替换(位置从0开始算起).4表示替换多少个字符.

One:substr_replace
Two:preg_replace

Just check the documentation, please.

Isn't that just a replacement? Substr_replace

String substitution ...

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