ctype_punct
The contradiction bellow brutaly forced me to do some testing.
ctype_space(""), as well as ctype_space(NULL), returns false
ctype_space(), returns NULL, with a warning
(PHP Version 4.4.8)
ctype_space
(PHP 4 >= 4.0.4, PHP 5)
ctype_space — Check for whitespace character(s)
Opis
bool ctype_space
( string $text
)
Checks if all of the characters in the provided string, text , creates whitespace.
Parametry
- text
-
The tested string.
Zwracane wartości
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.
Przykłady
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";
}
}
?>
Powyższy przykład wyświetli:
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.
add a note
User Contributed Notesctype_space
per dot zut at gmail dot com
22-Jul-2008 09:48
22-Jul-2008 09:48