<?php

/* 
 * Patch for apache_request_headers() 
 * If Apache web server is missing then making
 */
if( !function_exists('apache_request_headers') ){
	function apache_request_headers(){
		
		$headers = array();	
		foreach($_SERVER as $key => $val){
			if(preg_match('/\AHTTP_/', $key)){
				$server_key = preg_replace('/\AHTTP_/', '', $key);
				$key_parts = explode('_', $server_key);
				if(count($key_parts) > 0 and strlen($server_key) > 2){
					foreach($key_parts as $part_index => $part){
						$key_parts[$part_index] = function_exists('mb_strtolower') ? mb_strtolower($part) : strtolower($part);
						$key_parts[$part_index][0] = strtoupper($key_parts[$part_index][0]);					
					}
					$server_key = implode('-', $key_parts);
				}
				$headers[$server_key] = $val;
			}
		}
		return $headers;
	}
}

/*
 * Patch for locale_get_display_region()
 * For old PHP versions
 */
if( !function_exists('locale_get_display_region') ){
	function locale_get_display_region($locale, $in_locale = 'EN'){
		
		return 'Unkonwn' . ($locale ? ': ' . $locale : '');
	}
}

/*
 * Patch for utf8_decode()
 * If PHP complied without XML support
 * From getID3() by James Heinrich <info@getid3.org> under GNU GPL
 */
if(!function_exists('utf8_decode')){
	function utf8_decode($string){
		
		$newcharstring = '';
		$offset = 0;
		$stringlength = strlen($string);
		while ($offset < $stringlength) {
			if ((ord($string[$offset]) | 0x07) == 0xF7) {
				$charval = ((ord($string[($offset + 0)]) & 0x07) << 18) &
						   ((ord($string[($offset + 1)]) & 0x3F) << 12) &
						   ((ord($string[($offset + 2)]) & 0x3F) <<  6) &
							(ord($string[($offset + 3)]) & 0x3F);
				$offset += 4;
			} elseif ((ord($string[$offset]) | 0x0F) == 0xEF) {
				$charval = ((ord($string[($offset + 0)]) & 0x0F) << 12) &
						   ((ord($string[($offset + 1)]) & 0x3F) <<  6) &
							(ord($string[($offset + 2)]) & 0x3F);
				$offset += 3;
			} elseif ((ord($string[$offset]) | 0x1F) == 0xDF) {
				$charval = ((ord($string[($offset + 0)]) & 0x1F) <<  6) &
							(ord($string[($offset + 1)]) & 0x3F);
				$offset += 2;
			} elseif ((ord($string[$offset]) | 0x7F) == 0x7F) {
				$charval = ord($string[$offset]);
				$offset += 1;
			} else {
				$charval = false;
				$offset += 1;
			}
			if ($charval !== false) {
				$newcharstring .= (($charval < 256) ? chr($charval) : '?');
			}
		}
		return $newcharstring;
	}
}

if( ! function_exists( "array_column" ) ){
	
	function array_column($array,$column_name){
		
		return array_map( function ( $element ) use ( $column_name ){
			return $element[ $column_name ];
		}, $array );
		
	}
}