75 lines
1.2 KiB
PHP
75 lines
1.2 KiB
PHP
<?php
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// URL --> FILENAME_AT_END_OF_URL
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// Return the filename of a URL.
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function url_to_filename($url)
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{
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return last(explode('/', $url));
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}
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// ??? --> ???
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// ???
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function get_cwd($url)
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{
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$url_array = (explode("/", $url));
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if (end($url_array)) {
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$parts = count($url_array);
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$url = $_SERVER["HTTP_HOST"] . implode(array_splice($url_array, 1, $parts - 2));
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return $url;
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}
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else {
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return $url;
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}
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}
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// --> PROTOCOL://
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// Return "http://" or "https://", depending on what's currently used.
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function protocol()
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{
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if (isset($_SERVER['HTTPS'])) {
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return "https://";
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} else {
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return "http://";
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}
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}
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// ABSOLUTE_PATH --> FULL_URL
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// Create a full URL with the current protocol, domain, and provided path.
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function make_url($path)
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{
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$url = protocol()
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. $_SERVER['HTTP_HOST']
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. webroot($path);
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return $url;
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}
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// URL --> HEADER_REDIRECTION
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// Create a redirection header.
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function redirect($url)
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{
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return header('Location: ' . $url);
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}
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// URL --> BOOLEAN
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// Return whether or not a URL is a valid one.
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function valid_url($url)
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{
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return filter_var($url, FILTER_VALIDATE_URL);
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}
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?>
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