PHP ctype_space() Function Usage and Example

PHP Ctype Function Manual

　The ctype_space() function checks if the characters in the provided string contain whitespace.

Syntax

ctype_space( $text );

Definition and Usage

　Check if the characters inside the provided string text contain whitespace.

Parameter

Return value

If each character in text is ultimately output in some form of whitespace, return TRUE; otherwise, return FALSE. This includes whitespace characters, indentation, vertical tab, newline, carriage return, and formfeed characters.

Online Example

<?php
　　　$strings = array('string1=> "\n\r\t", 'string2=> "\narf"12", 'string3=> '\n\r\t');
　　　
　　　foreach ($strings as $test) {
　　　　　　if (ctype_space($test)) {
　　　　　　　　　echo "$test is composed of whitespace characters.\n";
　　　　　　}else {
　　　　　　　　　echo "$test contains non-whitespace characters\n";
　　　　　　}
　　　}
?>

Output result:

	　Composed of whitespace characters.
arf12　Non-whitespace characters contained　
Non-whitespace characters contained

　 　PHP Ctype Function Manual