Comment valider le numéro de téléphone dans la programmation procédurale PHP
<html>
<head>
<title>Validation Form</title>
</head>
<body>
<form id="contact_form" method="post" action="."> <br />
Label <input type="text" name="name" class="textfield" value="" /> <br />
Email <input type="text" name="email" class="textfield" value="" /> <br />
Phone Number <input type="text" name="number" class="textfield" value="" /> <br />
<p><input type="submit" name="submit" class="button" value="Submit" /></p>
</form>
</body>
</html>
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