ctype_space
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
ctype_space — Check for whitespace character(s)
Опис
bool ctype_space
( string $text
)
Параметри
-
text
-
The tested string.
Значення, що повертаються
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.
Приклади
Приклад #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";
}
}
?>
Наведений вище приклад виведе:
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.
Примітки
Зауваження:
If an integer between -128 and 255 inclusive is provided, it is interpreted as
the ASCII value of a single character (negative values have 256 added in order to allow
characters in the Extended ASCII range). Any other integer is interpreted as a string
containing the decimal digits of the integer.
Прогляньте Також
- 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