get id of button once clicked using php

[omar999]

i have a form with several inputs and corresponding buttons. The input name attribute and button id are both the same. i.e

	<form method="post" action="update.html">
		<input type="text" name="title">
		<button id="title">Submit</button>

		<input type="text" name="metaKeywords">
		<button id="metaKeywords">Submit</button>

		<input type="text" name="metaDescription">
		<button id="metaDescription">Submit</button>
	</form>

now what I want to do is get the id of the button click and then insert its value inside my php function code in the following places;

	<?php

	function update() {

		// specify target file name to update	
		$fileName = 'variables.php';

		// Let's make sure the file exists and is writable first.
		if (is_writable($fileName)) {

			// load target filename contents inside a variable
			$content = file_get_contents($fileName);

			// use reg ex to find and replace variable contents within target filename
			$content = preg_replace('/\$**[B]INSERT_BUTTON_ID_HERE[/B]**=\"(.*?)\";/', '$**[B]INSERT_BUTTON_ID_HERE[/B]**="'.$_POST["**[B]INSERT_BUTTON_ID_HERE[/B]**"].'";', $content);

			// open target filename for writing
			$handle = fopen($fileName, 'w');

			// Write $content to our opened file.
			fwrite($handle, $content);

			// success message
			echo "<p>Success, localisation file updated.</p>";

			// close opened file
			fclose($handle);

		} else {
		 
			echo "<p class='errorMessage'>The localisation file is not writable</p>";
		
		}

	}

	if (!empty($_POST['**[B]INSERT_BUTTON_ID_HERE[/B]**'])) {
		update();
	}

	?>

is this possible?

[Luuk]

What about saving your form to i.e. testform.php like this:

<?php
var_dump($_POST);
?>
<form method="post" action="testform.php">
    <input type="text" name="title">
    <button id="title">Submit</button>

    <input type="text" name="metaKeywords">
    <button id="metaKeywords">Submit</button>

    <input type="text" name="metaDescription">
    <button id="metaDescription">Submit</button>
</form>

and see what happens when you click..... ;)

[Dormilich]

I recommend to use a form for each button/text field, so you can get only the name of the clicked pair.

[Luuk]

This would be easier:

<?php
if (isset($_POST["title"])) {
   var_dump($_POST);
} else {
   echo "'title' not set....";
}
?>
<form method="post" action="testform.php">
    <input type="text" name="title">
    <button id="title">Submit</button>

    <input type="text" name="metaKeywords">
    <button id="metaKeywords">Submit</button>

    <input type="text" name="metaDescription">
    <button id="metaDescription">Submit</button>
</form>

if you then visit http:....../testform.php?bl a=bla
you wil get the message 'title' not set.

Of course the check should be expanded...... ;)