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<?php
/**
* LiteSpeed PHP compatibility functions for lower PHP version
*
* @since 1.1.3
* @package LiteSpeed_Cache
* @subpackage LiteSpeed_Cache/lib
* @author LiteSpeed Technologies <info@litespeedtech.com>
*/
defined( 'WPINC' ) || exit ;
/**
* http_build_url() compatibility
*
*/
if ( ! function_exists('http_build_url') ) {
if ( ! defined( 'HTTP_URL_REPLACE' ) ) define('HTTP_URL_REPLACE', 1); // Replace every part of the first URL when there's one of the second URL
if ( ! defined( 'HTTP_URL_JOIN_PATH' ) ) define('HTTP_URL_JOIN_PATH', 2); // Join relative paths
if ( ! defined( 'HTTP_URL_JOIN_QUERY' ) ) define('HTTP_URL_JOIN_QUERY', 4); // Join query strings
if ( ! defined( 'HTTP_URL_STRIP_USER' ) ) define('HTTP_URL_STRIP_USER', 8); // Strip any user authentication information
if ( ! defined( 'HTTP_URL_STRIP_PASS' ) ) define('HTTP_URL_STRIP_PASS', 16); // Strip any password authentication information
if ( ! defined( 'HTTP_URL_STRIP_AUTH' ) ) define('HTTP_URL_STRIP_AUTH', 32); // Strip any authentication information
if ( ! defined( 'HTTP_URL_STRIP_PORT' ) ) define('HTTP_URL_STRIP_PORT', 64); // Strip explicit port numbers
if ( ! defined( 'HTTP_URL_STRIP_PATH' ) ) define('HTTP_URL_STRIP_PATH', 128); // Strip complete path
if ( ! defined( 'HTTP_URL_STRIP_QUERY' ) ) define('HTTP_URL_STRIP_QUERY', 256); // Strip query string
if ( ! defined( 'HTTP_URL_STRIP_FRAGMENT' ) ) define('HTTP_URL_STRIP_FRAGMENT', 512); // Strip any fragments (#identifier)
if ( ! defined( 'HTTP_URL_STRIP_ALL' ) ) define('HTTP_URL_STRIP_ALL', 1024); // Strip anything but scheme and host
// Build an URL
// The parts of the second URL will be merged into the first according to the flags argument.
//
// @param mixed (Part(s) of) an URL in form of a string or associative array like parse_url() returns
// @param mixed Same as the first argument
// @param int A bitmask of binary or'ed HTTP_URL constants (Optional)HTTP_URL_REPLACE is the default
// @param array If set, it will be filled with the parts of the composed url like parse_url() would return
function http_build_url($url, $parts = array(), $flags = HTTP_URL_REPLACE, &$new_url = false)
{
$keys = array('user','pass','port','path','query','fragment');
// HTTP_URL_STRIP_ALL becomes all the HTTP_URL_STRIP_Xs
if ( $flags & HTTP_URL_STRIP_ALL ) {
$flags |= HTTP_URL_STRIP_USER;
$flags |= HTTP_URL_STRIP_PASS;
$flags |= HTTP_URL_STRIP_PORT;
$flags |= HTTP_URL_STRIP_PATH;
$flags |= HTTP_URL_STRIP_QUERY;
$flags |= HTTP_URL_STRIP_FRAGMENT;
}
// HTTP_URL_STRIP_AUTH becomes HTTP_URL_STRIP_USER and HTTP_URL_STRIP_PASS
else if ( $flags & HTTP_URL_STRIP_AUTH ) {
$flags |= HTTP_URL_STRIP_USER;
$flags |= HTTP_URL_STRIP_PASS;
}
// Parse the original URL
// - Suggestion by Sayed Ahad Abbas
// In case you send a parse_url array as input
$parse_url = !is_array($url) ? parse_url($url) : $url;
// Scheme and Host are always replaced
if ( isset($parts['scheme']) ) {
$parse_url['scheme'] = $parts['scheme'];
}
if ( isset($parts['host']) ) {
$parse_url['host'] = $parts['host'];
}
// (If applicable) Replace the original URL with it's new parts
if ( $flags & HTTP_URL_REPLACE ) {
foreach ($keys as $key) {
if ( isset($parts[$key]) ) {
$parse_url[$key] = $parts[$key];
}
}
}
else {
// Join the original URL path with the new path
if (isset($parts['path']) && ($flags & HTTP_URL_JOIN_PATH)) {
if ( isset($parse_url['path']) ) {
$parse_url['path'] = rtrim(str_replace(basename($parse_url['path']), '', $parse_url['path']), '/') . '/' . ltrim($parts['path'], '/');
}
else {
$parse_url['path'] = $parts['path'];
}
}
// Join the original query string with the new query string
if ( isset($parts['query']) && ($flags & HTTP_URL_JOIN_QUERY) ) {
if ( isset($parse_url['query']) ) {
$parse_url['query'] .= '&' . $parts['query'];
}
else {
$parse_url['query'] = $parts['query'];
}
}
}
// Strips all the applicable sections of the URL
// Note: Scheme and Host are never stripped
foreach ($keys as $key) {
if ( $flags & (int)constant('HTTP_URL_STRIP_' . strtoupper($key)) ) {
unset($parse_url[$key]);
}
}
$new_url = $parse_url;
return
(isset($parse_url['scheme']) ? $parse_url['scheme'] . '://' : '')
.(isset($parse_url['user']) ? $parse_url['user'] . (isset($parse_url['pass']) ? ':' . $parse_url['pass'] : '') .'@' : '')
.(isset($parse_url['host']) ? $parse_url['host'] : '')
.(isset($parse_url['port']) ? ':' . $parse_url['port'] : '')
.(isset($parse_url['path']) ? $parse_url['path'] : '')
.(isset($parse_url['query']) ? '?' . $parse_url['query'] : '')
.(isset($parse_url['fragment']) ? '#' . $parse_url['fragment'] : '')
;
}
}
if ( ! function_exists( 'array_key_first' ) ) {
function array_key_first( array $arr ) {
foreach( $arr as $k => $unused ) {
return $k ;
}
return NULL ;
}
}
if ( ! function_exists( 'array_column' ) ) {
function array_column( $array, $column_name )
{
return array_map( function( $element ) use( $column_name ) { return $element[ $column_name ]; }, $array );
}
}