如何在PHP中设置电话号码验证 [英] How to set validation on Phone number in PHP
问题描述
这是我的代码:
我从不设置电话号码验证字段，我尝试"/^([0-9]{3})-[0-9]{3}-[0-9]{4}$/"这种类型的代码进行验证，
我在电话号码字段中输入文字，他们在后端接受
I never set validation for phone number field, I try "/^([0-9]{3})-[0-9]{3}-[0-9]{4}$/" this type of code for validation,
I enter text in the phone number field, they accept in backend
我该怎么办?用于电话号码字段的设置验证.
what can I do? for set validation for phone number field.
<!DOCTYPE HTML>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<style>
.error {color: #FF0000;}
</style>
</head>
<body>
<?php
$nameErr = $phoneErr = "";
$name = $phone = "";
$error = 0;
if ($_SERVER["REQUEST_METHOD"] == "POST") {
// collect value of input field
$name = htmlspecialchars($_REQUEST['name']);
$phone = htmlspecialchars($_REQUEST['phone']);
if (empty($name)) {
$nameErr = "* Name is required";
$error = 1;
// echo "Name is empty";
}
if (empty($phone)) {
// echo "phone is empty";
$phoneErr = "* Phone is required";
$error = 1;
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF'];?>">
<h1>Login Form</h1>
Name: <input type="text" name="name" onkeydown="return alphaOnly(event);" value="<?php echo $name ?>">
<span class="error"> <?php echo $nameErr?></span>
<br></br>
Phone: <input type="text" name="phone" value="<?php echo $phone ?>">
<span class="error"> <?php echo $phoneErr?></span>
<br><br>
<input type="submit">
<br><br>
</form>
</body>
</html>
我需要在PHP中验证电话号码，但是该示例不起作用. 如何设置手机号码验证
I need to validate phone number in PHP, but the example do not work. How can I set validation for mobile number
推荐答案
根据您提供的注释和示例电话号码，此代码将验证您所在国家的数字位数和前两个数字，我只是替换了+和0，确保它们不会输入加号.
According to comments and example phone number that you given, this code will validating number of digits and first two numbers of your country, i just replaced + with 0, for sure they won't enter plus.
$tel = '091-9869123456';
if(preg_match("/^[0-9]{3}-[0-9]{10}$/", $tel)) {
echo "valid";
} else {
echo "invalid";
}
现在需要更多验证来检查国家/地区代码:
if(substr($tel, 0, 3) == '091'){
echo "valid";
} else {
echo "invalid, it should start with 091";
}
或者您也可以使用相同的preg_match来做到这一点:
Or you do this with same preg_match like this:
if(preg_match("/^[091]{3}-[0-9]{10}$/", $tel)) {
echo "valid";
} else {
echo "invalid";
}
Demo
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