PHP判断密码强度的方法

$score=0; if(!empty($_GET['value'])){ //接收的值 $str=$_GET['value']; } else{ $str=''; } if(preg_match("/[0-9]+/",$str)) { $score ++; } if(preg_match("/[0-9]{3,}/",$str)) { $score ++; } if(preg_match("/[a-z]+/",$str)) { $score ++; } if(preg_match("/[a-z]{3,}/",$str)) { $score ++; } if(preg_match("/[A-Z]+/",$str)) { $score ++; } if(preg_match("/[A-Z]{3,}/",$str)) { $score ++; } if(preg_match("/[_|\-|+|=|*|!|@|#|$|%|^|&|(|)]+/",$str)) { $score +=2; } if(preg_match("/[_|\-|+|=|*|!|@|#|$|%|^|&|(|)]{3,}/",$str)) { $score ++ ; } if(strlen($str) >=10) { $score ++; } echo $score; exit;

二、html页面

<table cellspacing="0" cellpadding="0"> <tr> <td>输入密码：</td> <td colspan="4"><input type="password" value="" name="newpwd" onblur="getPassword();" /> </tr> <tr> <td>密码强度：</td> <td id="idSM1" align="middle" width="20%"><span style="height:0px; line-height:0px;"> </span><span id="idSMT1" style="DISPLAY: none">弱</span></td> <td id="idSM2" style="BORDER-LEFT: #fff 1px solid" align="middle" width="20%"><span style="height:0px; line-height:0px;"> </span><span id="idSMT0" style="DISPLAY:inline; FONT-WEIGHT: normal; COLOR: #666">无</span><span id="idSMT2" style="DISPLAY: none">中等</span></td> <td id="idSM3" style="BORDER-LEFT: #fff 1px solid" align="middle" width="20%"><span style="height:0px; line-height:0px;"> </span><span id="idSMT3" style="DISPLAY: none">强</span></td> <td id="idSM4" style="BORDER-LEFT: #fff 1px solid" align="middle" width="20%"> <span style="height:0px; line-height:0px;"> </span><span id="idSMT4" style="DISPLAY: none">极好</span></td> </tr> </table>

三、js

<script> function getPassword(){ var value=$("input[name='newpwd']").attr('value'); $.get('index.php?r=account/testpwd',{value:value},function(data){ if(data>=1 && data<=3){ $('#idSM1').attr('class','pwdChkCon1'); //弱 $('#idSM2').attr('class','pwdChkCon0'); $('#idSM3').attr('class','pwdChkCon0'); $('#idSM4').attr('class','pwdChkCon0'); $('#idSMT1').show(); $('#idSMT0').hide(); $('#idSMT2').hide(); $('#idSMT3').hide(); $('#idSMT4').hide(); } else if(data>=4 && data<=6){ //中等 $('#idSM1').attr('class','pwdChkCon2'); $('#idSM2').attr('class','pwdChkCon2'); $('#idSM3').attr('class','pwdChkCon0'); $('#idSM4').attr('class','pwdChkCon0'); $('#idSMT0').hide(); $('#idSMT1').hide(); $('#idSMT2').show(); $('#idSMT3').hide(); $('#idSMT4').hide(); } else if(data>=7 && data<=8){ //强 $('#idSM1').attr('class','pwdChkCon3'); $('#idSM2').attr('class','pwdChkCon3'); $('#idSM3').attr('class','pwdChkCon3'); $('#idSM4').attr('class','pwdChkCon0'); $('#idSMT0').hide(); $('#idSMT1').hide(); $('#idSMT2').hide(); $('#idSMT3').show(); $('#idSMT4').hide(); } else if(data>=9 && data<=10){ //极好 $('#idSM1').attr('class','pwdChkCon4'); $('#idSM2').attr('class','pwdChkCon4'); $('#idSM3').attr('class','pwdChkCon4'); $('#idSM4').attr('class','pwdChkCon4'); $('#idSMT0').hide(); $('#idSMT1').hide(); $('#idSMT2').hide(); $('#idSMT3').hide(); $('#idSMT4').show(); } }); }

四、css

<style> .pwdChkCon0 {BORDER-RIGHT: #bebebe 1px solid;BORDER-BOTTOM: #bebebe 1px solid;BACKGROUND-COLOR: #ebebeb;TEXT-ALIGN: center;} .pwdChkCon1 {BORDER-RIGHT: #bb2b2b 1px solid;BORDER-BOTTOM: #bb2b2b 1px solid;BACKGROUND-COLOR: #ff4545;TEXT-ALIGN: center;} .pwdChkCon2 {BORDER-RIGHT: #e9ae10 1px solid;BORDER-BOTTOM: #e9ae10 1px solid;BACKGROUND-COLOR: #ffd35e;TEXT-ALIGN: center;} .pwdChkCon3 {BORDER-RIGHT: #267a12 1px solid;BORDER-BOTTOM: #267a12 1px solid;BACKGROUND-COLOR: #3abb1c;TEXT-ALIGN: center;} .pwdChkCon4 {BORDER-RIGHT: #267a12 1px solid;BORDER-BOTTOM: #267a12 1px solid;BACKGROUND-COLOR: #3abb1c;TEXT-ALIGN: center;} </style>