Redirect to Another Page

Code

<?php

/*
 * Copyright (c) 2026 Jeffery L. Paris <jparis@phpog.com>.
 * Free for personal and internal use. Paid project use requires visible credit
 * to Jeffery L. Paris. Corporate use requires a paid license fee unless a
 * separate written license states otherwise.
 */

/**
 * Redirect to Another Page.
 *
 * Purpose:
 * Performs a local allowlisted redirect with a `Location` header and a hard
 * `exit` so the old controller cannot continue rendering output.
 *
 * @param string $target_path Local path such as /hire-me.html.
 * @param array $allowed_paths Local redirect targets allowed by the caller.
 * @return void
 */
function ogSnippetRedirectToAnotherPage(string $target_path, array $allowed_paths): void {
	$target_path = trim($target_path);

	if ($target_path === '') {
		$target_path = '/';
	}

	if (strpos($target_path, '//') !== false || strpos($target_path, '://') !== false) {
		$target_path = '/';
	}

	if (in_array($target_path, $allowed_paths, true) === false) {
		$target_path = '/';
	}

	if (headers_sent() === false) {
		header('Location: '.$target_path, true, 302);
		exit;
	}

	echo 'Redirect failed because output already started.';
	exit;
}

$approved_jump_points = array(
	'/',
	'/premium-php-scripts.html',
	'/hire-php-developer.html'
);

// Controller usage after a successful form submission:
// ogSnippetRedirectToAnotherPage('/hire-php-developer.html', $approved_jump_points);