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php中表单印证 == 与===

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Release: 2016-06-13 12:38:31
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php中表单验证 == 与===
 各位有没有出现过===可以通过,==反而出现错误的情况?

if (empty($password) || empty($cpassword)) {
die ("No password Submitted");
}
elseif ((strlen($password)15)) {
die("Invalid password length address");
}
elseif (!(strlen(password) == (strlen(cpassword)))) {
die("Passwords do not match!!!");
}
elseif (!(password)===(cpassword)) {
die("Passwords do not match!");
}
else{
for ($i=0; $i  echo "*";
}
}
?>

为什么我的密码在==判断时出现错误,删除掉这个判断,却可以通过?

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