ctype_punct

Check for any printable character which is not whitespace or an alphanumeric character (PHP 4 >= 4.0.4, PHP 5)
bool ctype_punct ( string text )

Checks if all of the characters in the provided string, text, are punctuation character.

参数

text

The tested string.

返回值

Returns TRUE if every character in text is printable, but neither letter, digit or blank, FALSE otherwise.

范例

例 386. A ctype_punct() example

<?php
$strings
= array('ABasdk!@!$#', '!@ # $', '*&$()');
foreach (
$strings as $testcase) {
   if (
ctype_punct($testcase)) {
       echo
"The string $testcase consists of all punctuation.\n";
   } else {
       echo
"The string $testcase does not consist of all punctuation.\n";
   }
}
?>

上例将输出:

The string ABasdk!@!$# does not consist of all punctuation.
The string !@ # $ does not consist of all punctuation.
The string *&$() consists of all punctuation.