ctype
PHP Manual

ctype_space

(PHP 4 >= 4.0.4, PHP 5)

ctype_space — Check for whitespace character(s)

Описание

bool ctype_space ( string $text )

Checks if all of the characters in the provided string, text , creates whitespace.

Список параметров

text

The tested string.

Возвращаемые значения

Returns TRUE if every character in text creates some sort of white space, FALSE otherwise. Besides the blank character this also includes tab, vertical tab, line feed, carriage return and form feed characters.

Примеры

Example#1 A ctype_space() example

<?php
$strings 
= array('string1' => "\n\r\t"'string2' => "\narf12"'string3' => '\n\r\t');
foreach (
$strings as $name => $testcase) {
    if (
ctype_space($testcase)) {
        echo 
"The string '$name' consists of all whitespace characters.\n";
    } else {
        echo 
"The string '$name' does not consist of all whitespace characters.\n";
    }
}
?>

Результат выполнения данного примера:

The string 'string1' consists of all whitespace characters. The string 'string2' does not consist of all whitespace characters. The string 'string3' does not consist of all whitespace characters.

Смотрите также


ctype
PHP Manual