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POValidating form input in PHP
 

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    <p>is it possible to write a PHP page say form.php with a php function generalValidate($form) that is able to perform the following scenario :</p> <ol> <li>user browse to form.php</li> <li>user gets an html form </li> <li>user fills form and the form is sent back with POST method to form.php</li> <li>form.php activate generalValidate($form) where form is the just recived form filled by user</li> <li>generalValidate($form) returns true if this form is valid (for exemple properly filled), false else.</li> </ol> <p>i think that another way to describe my question will be - is there a general way to iterate over an HTML form sent by a client (perhaps a form that the php page itself sent to client in the first place) while activating some code over each of the form values?</p> <p>dont eat me if its a bad question, im really just trying to learn :)</p> <p>a code exemple to fill for your convinience :</p> <pre><code>&lt;?php function generalValidate($form) { ... } if (!isset($_SESSION)) session_start(); else if (generalValidate(...)) { } ?&gt; &lt;html&gt; &lt;head&gt; &lt;/head&gt; &lt;div&gt; &lt;p&gt;Register&lt;/p&gt; &lt;/div&gt; &lt;form id="regfrm" action="&lt;?php echo $_SERVER["PHP_SELF"]; ?&gt;" method="post" align="center"&gt; &lt;table align="center"&gt; &lt;tr&gt; &lt;td&gt;First Name :&lt;/td&gt; &lt;td&gt;&lt;input name="fname" value="&lt;?php if (isset($_POST["fname"])) {echo v($_POST["fname"]);}?&gt;" required&gt;&lt;/input&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Last Name :&lt;/td&gt; &lt;td&gt;&lt;input name="lname" value="&lt;?php if (isset($_POST["lname"])) {echo v($_POST["lname"]);}?&gt;" required&gt;&lt;/input&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Email :&lt;/td&gt; &lt;td&gt;&lt;input id="email" name="email" value="&lt;?php if (isset($_POST["email"])) {echo v($_POST["email"]);} else {echo "xo@xo.xo";}?&gt;" required&gt;&lt;/input&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Password :&lt;/td&gt; &lt;td&gt;&lt;input name="pw" type="password" value="e" required&gt;&lt;/input&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Retype password :&lt;/td&gt; &lt;td&gt;&lt;input name="pw" type="password" value="e" required&gt;&lt;/input&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;input type="submit" value="Register" &gt;&lt;/input&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. COThis is a very common situation and various approaches exist, e.g., this component in the Zend Framework (which might be a little bit over your head as you seem to be relatively new to this matter, but still might give you the general idea): http://framework.zend.com/manual/1.12/en/zend.filter.input.html
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    2. CO@Niko yeah, i am new to PHP and i asked this question just to learn some tricks in PHP, so using an extrnal framework wont make me know PHP any better :(
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