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 |
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$str = "15832818835";
echo substr($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 $s;
//王经理：139*****365 李经理：135*****741
?>
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Copy code
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| 代码如下 |
复制代码 |
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function half_replace($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');
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$str = "15832818835";
echo substr($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 |
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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！");
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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 $s;
//Manager Wang: 139*****365 Manager Li: 135*****741
?>
Replace the character in the middle of the string with an asterisk
| The code is as follows
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Copy code
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function half_replace($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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Copy code
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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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