php+jquery ajax email address verification example without refresh

php+jquery ajax email address verification example without refresh_PHP tutorial

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Release： 2016-07-13 10:49:01

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To achieve a non-refresh page, we usually use ajax to achieve it. In the past, we used the most primitive js ajax for verification. Now we use the commonly used jquery ajax. Just a simple post can solve the problem. Let's look at the example below

index .php page

php verification page, this page receives the data from jquery ajax post for verification and returns the value

The code is as follows

代码如下

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php jquery check username ajax检查帐号唯一性

Username:

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代码如下

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# FileName="Connection_php_mysql.htm"
# Type="MYSQL"
# HTTP="true"
$hostname_lr = "localhost";
$database_lr = "ordersiliconebracelets";
$username_lr = "root";
$password_lr = "";
$lr = mysql_pconnect($hostname_lr, $username_lr, $password_lr) or trigger_error(mysql_error(),E_USER_ERROR);
mysql_query("set names utf8;");
//if ($lr) {
//echo "非常好,MYSQL连接成功了!";
//} else {
//echo "不好意思,失败了！";
//}
mysql_select_db($database_lr, $lr);

//
$username = trim(strtolower($_POST['username']));
$username = mysql_escape_string($username);

if (eregi("^[_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3}$",$username)) {
//email通过检查
$query = "SELECT email FROM user WHERE email = '$username' LIMIT 1";
$result = mysql_query( $query );
$num = mysql_num_rows($result);

echo $num;
}
else

{
echo "1";//不能注册

}
?>

php jquery check username ajax check account uniqueness

The code is as follows

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<🎜># FileName="Connection_php_mysql.htm"
# Type="MYSQL"
# HTTP="true"
$hostname_lr = "localhost";
$database_lr = "ordersiliconebracelets";
$username_lr = "root";
$password_lr = "";
$lr = mysql_pconnect($hostname_lr, $username_lr, $password_lr) or trigger_error(mysql_error(),E_USER_ERROR);
mysql_query("set names utf8;");
//if ($lr) {
//echo "Very good, MYSQL connection successful!";
//} else {
//echo "Sorry, failed!";
//}
mysql_select_db($database_lr, $lr);<🎜> <🎜>//
$username = trim(strtolower($_POST['username']));
$username = mysql_escape_string($username);<🎜> <🎜>if (eregi("^[_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3}$ ",$username)) {
//email passed the check
$query = "SELECT email FROM user WHERE email = '$username' LIMIT 1";
$result = mysql_query( $query );
$num = mysql_num_rows($result);

echo $num;
}
else<🎜> <🎜>{
echo "1";//Cannot register<🎜> <🎜>}
?>