Quick interface to batch delete template in ProcessWire

pw_delete_templates

<?php

if ($input->post->submit) {
  foreach ($input->post as $t) {
		// proceed only if the input is an integer different from 0
		if (!(int)$t) return;
		$t = $templates->get($t);
		$templates->delete($t);
		$name = $t->name;
		// delete the fieldgroup associated with this template. more info in the next post
		$fg = $fieldgroups->get($name);
		$fieldgroups->delete($fg);
                // verify that the template is not there and print the confirmation
		if (!$templates->get($t)) echo "<p>template {$name} was deleted.</p>";
	}
} else {
	// print the form
	echo "<form method='post'>";
	echo "<ul>";
	foreach ($templates as $t) {
		// name of the template and number of pages it uses
		echo "<li>" . $t->name . " (" . $t->getNumPages() . " pages)";
		// include checkbox if the template is not used by pages, and set it's id as value
		if (!$t->getNumPages()) echo " <input type='checkbox' value='{$t->id}' name='{$t->name}'>";
		echo "</li>";
	}
	echo "</ul>";
	echo "<input type='submit' value='delete these' name='submit'>";
	echo "</form>";
}