thinkphp Framework: Verification Code function

I. Single Verification Code

1. The new controller TestController.class.php can still be used in the upload Function.

2. Create an action method

Namespace Home\controller;use think\controller;class TestController extends Controller {public    function Yanzheng ( {$this->show ();//display Template page}}

3. Create a new validated template page under Home/view/test yanzheng.html use Ajax to verify

<! DOCTYPE HTML Public "-//w3c//dtd XHTML 1.0 transitional//en" "HTTP://WWW.W3.ORG/TR/XHTML1/DTD/XHTML1-TRANSITIONAL.DTD ">Event $ ("#btn") is triggered when the focus is lost. the click (function () {var yzm = $ ("#txt"). val ();//take The value entered by the user $.ajax ({url: "__controller__/yz", data:{ Yzm:yzm},type: "POST", dataType: "TEXT", success:function (data) {if (data.trim () = = "ok") {alert ("success");} Else{alert ("failed");}}) $ ("#img"). Click (function () {var SJS = Math.floor (math.random () *100); attr ("src", "__controller__/yzm/code/" + Sjs);}) </script>

4. Build an action method Yzm is used to generate a verification code and to have the validation button point to an action method, create a new YZ action method

<?phpnamespace home\controller;use think\controller;class TestController extends Controller {public      function Yanzheng () {$this->show ();//display template page}public function Yzm () {$v = new \think\verify ();//build OBJECT//$V->USEIMGBG = true;// Whether to use the background picture defaults to false//$v->fontsize= "30";//captcha font size (pixels) default to 25//$v->usecurve=false;//whether to use obfuscation curve default to True//$v Usenoise=false;//whether to add a miscellaneous point by default is true//$v->length= "4";//verification code points $v->usezh = True;//chinese code $v->fontttf= "stkaiti. TTF "; $v->entry ();//generate verification code}public function YZ () {$yzm = $_post[" yzm "]; $v = new \think\verify (); if ($v->check ($yzm)) {//verify $this->ajaxreturn ("ok", "eval");} Else{$this->ajaxreturn ("no", "eval");}}          ｝    

The effect of the implementation is as Follows:

Click Verify after entering Text:

TWO. Two verification codes

1. Add an IMG tag to the template

<body>
2. Controller method also write a yzm method, called yzm2, if there are two verification code, entry will be identified, entry (1) entry (2)
Public function Yanzheng () {$this->show ();//display template page}public function Yzm () {$v = new \think\verify ();//object//$v USEIMGBG = True;//whether The background picture is used by default is false//$v->fontsize= "30";//captcha font size (pixels) default to 25//$v->usecurve=false;//use confusion curve The default is true//$v->usenoise=false;//whether to add a noise default is true//$v->length= "4";//verification code points $v->usezh = True;//chinese code $v-> fontttf= "stkaiti. TTF "; $v->entry (1);//generate verification code}public function YZ () {$yzm = $_post[" yzm "]; $v = new \think\verify (); if ($v->check ($yzm, 1) {//verify $this->ajaxreturn ("ok", "eval");} Else{$this->ajaxreturn ("no", "eval");}} Public Function yzm2 () {$v = new \think\verify (); $v->entry (2);//generate Verification code}
3. Then write an identity in the check method, which is the identity to verify which is the first
Public Function yz () {$yzm = $_post["yzm"]; $v = new \think\verify (); if ($v->check ($yzm, 1)) {//verify $this->ajaxreturn ( "ok", "eval");} Else{$this->ajaxreturn ("no", "eval");}}
The results displayed:
Note: Sometimes the browser will have a bug, such as IE does not refresh, so we want to add a thing, let it adapt to any browser, can write
$ ("#img"). Click (function () {var SJS = Math.floor (math.random () *100);//generate random number $ (this). attr ("src", "__controller__/yzm/ Code/"+sjs);//stitching on the truncated random Number})
Three. Verification Code parameters
Note: There are two ways to set the parameters
One is to instantiate the incoming parameters:
$config = array (       ' fontSize ' = +    ,    //captcha font size       ' length ' =    3,     //verify code bits       ' usenoise '    = false,//turn off verification code clutter); $Verify = new \think\verify ($config); $Verify->entry ();
The second is the dynamic setting:
$Verify = new \think\verify (), $Verify->fontsize = $Verify $Verify->length   = 3;->usenoise = false;$ Verify->entry ();
emphasis on the method of Chinese verification Code  1. There is no font parameter in the frame, so we find the font parameter from C Disk.
2. Select the font parameters in the TTF format to copy to the Thinkphp\thinkphp\library\think\verify\zhttfs folder
3. Call the Chinese captcha parameter in the code
Public function Yzm () {    $v = new \think\verify ();//build object    $v->usezh = True;//chinese Verification Code    $v->fontttf= "stkait　　I.ttf ";    $v->entry (1);//generate Verification code}
thinkphp Framework: Verification Code function