PHP string function-trim () instance usage

String Trim (String $str [, String $charlist = "\t\n\r\0\x0b"])
This function returns the result of the string str after removing the trailing whitespace characters. If you do not specify a second parameter, trim () will remove these characters:
1. "" (ASCII (0x20)), ordinary whitespace.
2. "\ T" (ASCII 9 (0x09)), tab.
3. "\ n" (ASCII (0x0A)), line break.
4. "\ R" (ASCII (0x0D)), carriage return.
5. "\" (ASCII 0 (0x00)), null byte character.
6. "\x0b" (ASCII One (0x0B)), Vertical tab.

<?PHP$text= "\t\tthese is a few words:) ... "; $binary= "\x09example string\x0a"; $hello= "Hello World"; $str= "##\t use function trim to remove specific characters at both ends of a string # # #"; $new _text=Trim($text); $new _binary=Trim($binary); $new _hello=Trim($hello); $new _str=Trim($str,"#"); Echo $new _text;//These is a few words:) ...    Echo $new _binary;//Example String    Echo $hello;//Hello World    Echo $new _str;//use function trim to remove specific characters at both ends of a string?>

The above function function, also applies to LTrim (), RTrim (), these 2 functions
1, LTrim (); remove whitespace characters (or other characters) at the beginning of a string
2, RTrim (); remove whitespace characters (or other characters) at the end of a string

PHP string function-trim () instance usage