ctype_space
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
ctype_space — Check for whitespace character(s)
설명
bool ctype_space
( string $text
)
인수
-
text
-
The tested string.
반환값
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.
예제
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";
}
}
?>
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.
주의
Note:
-128이상 255이하의 integer를 지정할 경우, 한 문자의 ASCII 값으로 해석합니다.
(음수는 256이 더해져 확장 ASCII 영역의 문자가 됩니다) 그 외의 정수는 그 정수를 표현하는 10진
문자열로 해석합니다.
참고
- ctype_cntrl() - Check for control character(s)
- ctype_graph() - Check for any printable character(s) except space
- ctype_punct() - Check for any printable character which is not whitespace or an
alphanumeric character