PHP string replacement with asterisks or other characters (mobile phone number, ID card)_PHP tutorial

In PHP, the character at the specified position in the string is replaced with an asterisk. We have many functions that can be implemented, such as substr, preg_replace, substr_replace, etc. Below I will introduce an example for each of these three functions, mainly talking about phone calls. ID card.

Mobile phone number string is replaced with asterisk code:

The code is as follows

代码如下	复制代码
$str = "15832818835"; echo substr($str,0,3).'*****'.substr($str,8,strlen($str));//保留前三位和后三位 ?> 或用正则 $s='www.bKjia.c0m的王经理：13999312365 李经理：13588958741'; $s=preg_replace('#(d{3})d{5}(d{3})#', '*****', $s); echo $s; //王经理：139*****365 李经理：135*****741 ?>

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代码如下

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function half_replace($str){
$len = strlen($str)/2;
return substr_replace($str,str_repeat('*',$len),ceil(($len)/2),$len);
}

echo half_replace('test'),"n",half_replace('tests'),"n",half_replace('exceptions');

$str = "15832818835";

echo substr($str,0,3).'*****'.substr($str,8,strlen($str));//Retain the first three digits and the last three digits

?>

代码如下	复制代码
echo strlen($idcard)==15?substr_replace($idcard,"****",8,4):(strlen($idcard)==18?substr_replace($idcard,"****",10,4):"bKjia.c0m提示身份证位数不正常！");

or use regular expression $s='Manager Wang of www.bKjia.c0m: 13999312365 Manager Li: 13588958741';

$s=preg_replace('#(d{3})d{5}(d{3})#', '${1}*****${2}', $s);

echo $s; //Manager Wang: 139*****365 Manager Li: 135*****741 ?> Replace the character in the middle of the string with an asterisk

The code is as follows

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function half_replace($str){ $len = strlen($str)/2; Return substr_replace($str,str_repeat('*',$len),ceil(($len)/2),$len);

}

echo half_replace('test'),"n",half_replace('tests'),"n",half_replace('exceptions'); Start the PHP ID number

The code is as follows

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echo strlen($idcard)==15?substr_replace($idcard,"****",8,4):(strlen($idcard)==18?substr_replace($idcard,"**** ",10,4):"bKjia.c0m prompts that the number of ID cards is abnormal! "); http://www.bkjia.com/PHPjc/633116.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/633116.htmlTechArticleReplace the character at the specified position in the string in php with an asterisk. We have many functions that can be implemented. If there is substr , preg_replace, substr_replace, etc. Below I will introduce each of these three functions...

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