custom_trim.php

	function custom_trim($str,$trim=''){
		if($trim==''){
			$str=trim($str);
		}
		if($trim==' '){
			$str=preg_replace('/^\p{Z}+|\p{Z}+$/u', '', $str);
		}
		else{
			$str=custom_ltrim($str,$trim);
			$str=custom_rtrim($str,$trim);
		}
		return $str;
	}

	function custom_ltrim($str,$trim){
		if(is_array($trim)){
			foreach($trim as $t){
				$str=custom_rtrim($str,$t);
			}
		}
		else{
			if(custom_strlen($trim)==1){
				$str=ltrim($str,$trim);
			}
			else{
				$delim="`";
				//$patern="(".$trim.")(.*)";
				$patern="^(".$trim.")?(.*)$";
				$str=preg_replace($delim.$patern.$delim."i", "$2", $str);
			}
		}
		return $str;
	}
	function custom_rtrim($str,$trim){
		if(is_array($trim)){
			foreach($trim as $t){
				$str=custom_rtrim($str,$t);
			}
		}
		else{

			if(custom_strlen($trim)==1){
				$str=rtrim($str,$trim);
			}
			else{
				$delim="`";
				//$patern="(".$trim.")(.*)";
				$patern="^(.*)".$trim."$";
				$str=preg_replace($delim.$patern.$delim."i", "$1", $str);
				
			}
		}
		return $str;
	}