trim

Description

This function returns a string with whitespace stripped from the beginning and end of str. Without the second parameter, trim() will strip these characters:

• " " (ASCII 32 (0x20)), an ordinary space.

• "\t" (ASCII 9 (0x09)), a tab.

• "\n" (ASCII 10 (0x0A)), a new line (line feed).

• "\r" (ASCII 13 (0x0D)), a carriage return.

• "\0" (ASCII 0 (0x00)), the NUL-byte.

• "\x0B" (ASCII 11 (0x0B)), a vertical tab.

Parameters

Return Values

The trimmed string.

ChangeLog

Examples

Example 1. Usage example of trim() <?php $text = "\t\tThese are a few words :) ...  "; echo trim($text);           // "These are a few words :) ..." echo trim($text, " \t.");   // "These are a few words :)" // trim the ASCII control characters at the beginning and end of $binary // (from 0 to 31 inclusive) $clean = trim($binary, "\x00..\x1F"); ?>

Example 2. Trimming array values with trim() <?php function trim_value(&$value) {     $value = trim($value); } $fruit = array('apple','banana ', ' cranberry '); var_dump($fruit); array_walk($fruit, 'trim_value'); var_dump($fruit); ?> The above example will output: array(3) { [0]=> string(5) "apple" [1]=> string(7) "banana " [2]=> string(11) " cranberry " } array(3) { [0]=> string(5) "apple" [1]=> string(6) "banana" [2]=> string(9) "cranberry" }

See Also