Detailed explanation of PHP's method for determining password strength, and detailed explanation of php's method for determining password strength

Detailed explanation of PHP's method for determining password strength, and detailed explanation of php's method for determining password strength

This article describes how to determine the password strength of PHP. We will share this with you for your reference. The details are as follows:

I. php page

$ Score = 0; if (! Empty ($ _ GET ['value']) {// received value $ 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;

Ii. html page

<Table cellspacing = "0" cellpadding = "0"> <tr> <td> enter the password: </td> <td colspan = "4"> <input type = "password" value = "" name = "newpwd" onblur = "getPassword (); "/> </tr> <td> password strength: </td> <td id = "idSM1" align = "middle" width = "20%"> <span style = "height: 0px; line-height: 0px; "> </span> <span id =" idSMT1 "style =" DISPLAY: none "> weak </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 "> none </span> <span id =" idSMT2 "style =" DISPLAY: none "> moderate </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 "> strong </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 "> excellent </span> </td> </tr> </table>

Iii. 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'); // weak $ ('# 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) {// medium $ ('# 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) {// strong $ ('# 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) {// excellent $ ('# 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 ();}});}

Iv. 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>

PS: here we will provide several related online tools for your reference:

Online Password Security Detection:
Http://tools.jb51.net/password/my_password_safe

Online random number/string generation tool:
Http://tools.jb51.net/aideddesign/suijishu

High-strength Password generator:
Http://tools.jb51.net/password/CreateStrongPassword