Php+ajax verification problem (with complete code). The error screenshot has been uploaded. Please point out where the error is.
this is the backend code
<?php
$password=$_POST["password"];
function getRandPass(){
$chars = ("0123456789abcdefghijklmnopqrstuvwxyz");
$min = 6;//
$max = 9;//
$len = mt_rand($min,$max);//
$password= "";
$a_len = strlen($chars);
for($i=0;$i<$len;$iPP){
$password.= $chars[mt_rand(0,$a_len-1)];//
}
return $password;
}
$password=getRandPass();
if($password==$password){
$data["code"] = 1;
$data["password"] = $password;
}else{
$data["code"] = 0;
}
$data="{password:"" . $password. ""}";//json
echo json_encode($data);//json
?>
the following is the front-end code
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
</head>
<body>
<input type="text" id="password">
<button id="sub"></button>
<button id="gopass"></button>
<input type="text" id="text">
<span id="texts"></span><!-- -->
<script src="http://apps.bdimg.com/libs/jquery/1.9.1/jquery.min.js"></script>
<script>
$("-sharpgopass").click(function(){
var password=$("-sharppassword").val();
if(password==""){
$("-sharptexts").html("");
return false;
}
$.ajax({
url: "password.php",
type: "POST",
dataType: "json",
data: {password: password},
beforeSend: function(){
$("-sharptexts").html("");//
},
success: function(data){
if(data.code==1){ //
$("-sharptexts").html("" );
}else{
$("-sharptexts").html("");
}
}
});
});
</script>
<script>
$(function(){
$("-sharpsub").click(function(){
var password=$("-sharppassword").val();
$.ajax({
type: "post",
url: "password.php",
data: {password: password}, //password.php
dataType: "json", //
success: function(msg){
$("-sharptext").empty(); //Text
var data="";
if(msg!=""){
data = eval("("+msg+")"); //jsondata
}
$("-sharptext").val(data.password); //-sharptext
$("-sharptexts").html("");
console.log(data); //
},
error:function(msg){
console.log(msg);//
}
});
});
});
</script>
</body>
</html>
question 1, the password is not saved, and the new password is generated again when the password is verified, so it is always password error
.
question 2, $data=' {password: ". $password.'"}'; and echo json_encode ($data); repeat, json_encode is the
that generates json
question 3 when dataType: "json" is used by Ajax, jquery automatically parses the json string, eliminating the need for data = eval ("(" + msg+ ")");
question 4, in the click event to get the password, why submit the password data: {password: password}, / / the data submitted to password.php
when you haven't entered the password yet.
<?php
session_start();
function getRandPass()
{
$chars = ("0123456789abcdefghijklmnopqrstuvwxyz");
$min = 6;//
$max = 9;//
$len = mt_rand($min,$max);//
$password = '';
$a_len = strlen($chars);
for($i = 0;$i < $len;$iPP)
{
$password .= $chars[mt_rand(0,$a_len - 1)];//
}
return $password;
}
if(isset($_POST['password']))
{
if($_SESSION['password'] == $_POST['password'])//
{
$data['code'] = 1;
}
else
{
$data['code'] = 0;
}
}
else
{
$password = getRandPass();
$_SESSION['password'] = $password;//
$data['password'] = $password;
}
echo json_encode($data);//json
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
</head>
<body>
<input type="text" id="password">
<button id="sub">
</button>
<button id="gopass">
</button>
<input type="text" id="text">
<span id="texts">
</span><!-- -->
<script src="http://apps.bdimg.com/libs/jquery/1.9.1/jquery.min.js">
</script>
<script>
$('-sharpgopass').click(function()
{
var password = $('-sharppassword').val();
if(password == '')
{
$('-sharptexts').html('');
return false;
}
$.ajax(
{
url: 'password.php',
type: 'POST',
dataType: 'json',
data:
{
password: password
},
beforeSend: function()
{
$('-sharptexts').html('');//
},
success: function(data)
{
if(data.code == 1)
{
//
$('-sharptexts').html('' );
}else
{
$('-sharptexts').html('');
}
}
});
});
$('-sharpsub').click(function()
{
var password = $('-sharppassword').val();
$.ajax(
{
type: "get",
url: "password.php",//password.php
dataType: "json", //
success: function(data)
{
$('-sharptext').empty(); //Text
$('-sharptext').val(data.password); //-sharptext
$('-sharptexts').html('');
console.log(data); //
},
error:function(msg)
{
console.log(msg);//
}
});
});
</script>
</body>
</html>
ultimate goal: get the password and enter the password for authentication.
backend code changed to
<?php
if ($_POST['action'] == 'getPassword') {
$data['password'] = getRandPass();
} else if ($_POST['action'] == 'check') {
if($_POST['password'] == $_POST['inputPassword']){
$data['code'] = 1;
}else{
$data['code'] = 0;
}
}
function getRandPass()
{
$chars = ("0123456789abcdefghijklmnopqrstuvwxyz");
$min = 6;//
$max = 9;//
$len = mt_rand($min,$max);//
$password= '';
$a_len = strlen($chars);
for($i=0;$i<$len;$iPP){
$password.= $chars[mt_rand(0,$a_len-1)];//
}
return $password;
}
echo json_encode($data);//json
?>
Front end code
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
</head>
<body>
<input type="text" id="password">
<button id="sub"></button>
<button id="gopass"></button>
<input type="text" id="text">
<span id="texts"></span><!-- -->
<script src="http://apps.bdimg.com/libs/jquery/1.9.1/jquery.min.js"></script>
<script>
$('-sharpgopass').click(function(){
var password=$('-sharppassword').val();
if(password==''){
$('-sharptexts').html('');
return false;
}
$.ajax({
url: 'password.php',
type: 'POST',
dataType: 'json',
data: {action:'check',password: password,inputPassword:$('-sharptext').val()},
beforeSend: function(){
$('-sharptexts').html('');//
},
success: function(data){
if(data.code==1){ //
$('-sharptexts').html('' );
}else{
$('-sharptexts').html('');
}
}
});
});
</script>
<script>
$(function(){
$('-sharpsub').click(function(){
var password=$('-sharppassword').val();
$.ajax({
type: "post",
url: "password.php",
data: {action:'getPassword', password: password}, //password.php
dataType: "json", //
success: function(msg){
$('-sharptext').empty(); //Text
var data='';
if(msg!=''){
data = eval("("+msg+")"); //jsondata
}
$('-sharptext').val(data.password); //-sharptext
$('-sharptexts').html('');
console.log(data); //
},
error:function(msg){
console.log(msg);//
}
});
});
});
</script>
</body>
</html>
then try again, the main problem is that the final output is stitched manually.
