<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
</head>
<body>
<form method="post">
<input type="text" name="email">
<input type="submit" value="提交email">
</form>
</body>
</html>
<?php
error_reporting(0);
if(strpos($_POST['email'],'@')===false)
{
print "strpos的意思是:查找input:email中@第一次出现的位置.";
}
else
{
print "666";
}
?>