編輯表格以清理/驗證電話號碼

Question

我在PHP方面的經驗非常有限，我真的希望有人可以幫助我。

我想做的是清理/驗證輸入的電話號碼，以便只允許輸入號碼。

我想我需要使用FILTER_SANITIZE_NUMBER_INT但不確定在哪里或如何使用它。

這是我的代碼：

<?php

// Replace the email address with the one that should receive the contact form inquiries.
define('TO_EMAIL', '########');

$aErrors = array();
$aResults = array();

/* Functions */

function stripslashes_if_required($sContent) {

    if(get_magic_quotes_gpc()) {
        return stripslashes($sContent);
    } else {
        return $sContent;
    }
}

function get_current_url_path() {

    $sPageUrl = "http://".$_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
    $count = strlen(basename($sPageUrl));
    $sPagePath = substr($sPageUrl,0, -$count);
    return $sPagePath;
}

function output($aErrors = array(), $aResults = array()){ // Output JSON

    $bFormSent = empty($aErrors) ? true : false;
    $aCombinedData = array(
        'bFormSent' => $bFormSent,
        'aErrors' => $aErrors,
        'aResults' => $aResults
        );

    header('Content-type: application/json');
    echo json_encode($aCombinedData);
    exit;
}

// Check supported version of PHP
if (version_compare(PHP_VERSION, '5.2.0', '<')) { // PHP 5.2 is required for the safety filters used in this script

    $aErrors[] = 'Unsupported PHP version. <br /><em>Minimum requirement is 5.2.<br />Your version is '. PHP_VERSION .'.</em>';
    output($aErrors);
}


if (!empty($_POST)) { // Form posted?

    // Get a safe-sanitized version of the posted data
    $sFromEmail = filter_input(INPUT_POST, 'email', FILTER_SANITIZE_EMAIL);
    $sFromName = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_LOW);

    $sMessage  = "Name: ".stripslashes_if_required($_POST['name']);
    $sMessage .= "\r\nEmail: ".stripslashes_if_required($_POST['email']);
    $sMessage .= "\r\nBusiness: ".stripslashes_if_required($_POST['business']); 
    $sMessage .= "\r\nAddress: ".stripslashes_if_required($_POST['address']);
    $sMessage .= "\r\nPhone: ".stripslashes_if_required($_POST['phone']);
    $sMessage .= "\r\nMessage: ".stripslashes_if_required($_POST['message']);
    $sMessage .= "\r\n--\r\nEmail sent from ". get_current_url_path();

    $sHeaders  = "From: '$sFromName' <$sFromEmail>"."\r\n";
    $sHeaders .= "Reply-To: '$sFromName' <$sFromEmail>";

    if (filter_var($sFromEmail, FILTER_VALIDATE_EMAIL)) { // Valid email format?

        $bMailSent = mail(TO_EMAIL, "New inquiry from $sFromName", $sMessage, $sHeaders);
        if ($bMailSent) {
            $aResults[] = "Message sent, thank you!";
        } else {
            $aErrors[] = "Message not sent, please try again later.";
        }

    } else {
        $aErrors[] = 'Invalid email address.';
    }
} else { // Nothing posted
    $aErrors[] = 'Empty data submited.';
}


output($aErrors, $aResults);

Answer 1

您是否研究過PHP的preg_replace函數？ 您可以使用preg_replace('/[^0-9]/', '', $_POST['phone'])任何非數字字符。

過濾掉字符數據后，您始終可以檢查它是否具有所需的長度：

$phone = preg_replace('/[^0-9]/', '', $_POST['phone']);
if(strlen($phone) === 10) {
    //Phone is 10 characters in length (###) ###-####
}

您還可以使用PHP的preg_match函數，如在另一個SO問題中所討論的。

Answer 2

有幾種方法可以做到...例如：

// If you want to clean the variable so that only + - . and 0-9 can be in it you can:
$number = filter_var($number, FILTER_SANITIZE_NUMBER_INT);

// If you want to clean it up manually you can:
$phone = preg_replace('/[^0-9+-]/', '', $_POST['phone']);

// If you want to check the length of the phone number and that it's valid you can:
if(strlen($_POST['phone']) === 10) {
    if (!preg_match('/^[0-9-+]$/',$var)) { // error } else { // good }
}

顯然，可能需要根據國家/地區和其他雜項因素進行一些編輯。

Answer 3

您可以嘗試使用preg_replace過濾掉所有非數字字符，然后可以檢查剩余內容的長度以查看其電話號碼（應為7.9或10位數字）

// remove anything thats not a number from the string
function only_numbers($number) { return preg_replace('/[^0-9]/', '', $number) };
// test that the string is only 9 numbers long
function isPhone($number) { return strlen(only_numbers($number)) == 9; }

驗證后使用該值時，只需確保使用only_numbers值即可。

-肯