本文实例讲述了PHP判断密码强度的方法。分享给大家供大家参考，具体如下：
一、php页面
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$score = 0;if(!empty($_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
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<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
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<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
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<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> |
PS：这里再为大家提供几款相关在线工具供大家参考使用：
在线随机数字/字符串生成工具：
https://tool.zzvips.com/t/randkey/
希望本文所述对大家PHP程序设计有所帮助。
