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@Lewiscowles1986

Lewiscowles1986/redirection.function.php

Last active October 24, 2019 07:25
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PHP Redirect PHP, JS, HTML Meta Tag
Raw
redirection.function.php
<?php
const OPTION_DEFAULTS = [
'lang' => 'en',
'meta' => true,
'js' => true,
'title' => 'Redirection notice',
'link_sentence' => 'If you are not redirected automatically, follow <a href="%s">%s</a>',
'link_label' => 'this link',
'head_extra' => '<link rel="stylesheet" href="/css/style.css" />',
];
function redirection($url) {
redirect_to($url);
terminate_program();
}
function terminate_program($code=0) {
exit($code);
}
function set_http_header($header, $value) {
if (!headers_sent()) {
header("${header}: ${value}");
}
}
function redirect_to($url, $options=[]) {
set_http_header('Location', $url);
output_redirection_html($url, process_options($options));
}
function process_options($options) {
return array_merge(OPTION_DEFAULTS, $options);
}
function output_redirection_html($url, $options) {
?>
<!doctype html>
<html <?= $options['lang'] ? "lang=\"${options['lang']}\"" : '';?>>
<head>
<meta charset="UTF-8">
<?php if($options['meta']): ?><meta http-equiv="refresh" content="0; url=<?= $url; ?>">
<?php endif; ?>
<?php if($options['js']): ?>
<script type="text/javascript">
window.location.href = "<?= $url; ?>"
</script>
<?php endif; ?>
<title><?= $options['title']; ?></title>
<?= $options['head_extra']; ?>
</head>
<body>
<?= sprintf($options['link_sentence'], $url, $options['link_label']); ?>
</body>
</html>
<?php
}
@Lewiscowles1986
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Just a filthy way to force redirect with several layers of fallback using PHP

@Lewiscowles1986
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Lewiscowles1986 commented Oct 24, 2019 •
edited

output_redirection_html('https://www.google.com', ['link_label' => 'expected_text', 'js'=>false, 'meta'=>false, 'head_extra'=>'', 'lang'=>false])

Expected Output (captured from PHP+XDebug 
<!doctype html>
<html >
<head>
  <meta charset="UTF-8">
   
  <title>Redirection notice</title>
   
</head>
<body>
  If you are not redirected automatically, follow <a href="https://www.google.com">expected_text</a></body>
</html>

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