ctype_punct
(PHP 4 >= 4.0.4, PHP 5)
ctype_punct — Check for any printable character which is not whitespace or an alphanumeric character
说明
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
Example #1 A ctype_punct() example 以上例程会输出：
<?php
$strings = array('ABasdk!@!$#', '!@ # $', '*&$()');
foreach ($strings as $testcase) {
if (ctype_punct($testcase)) {
echo "The string $testcase consists of all punctuation.
";
} else {
echo "The string $testcase does not consist of all punctuation.
";
}
}
?>
The string ABasdk!@!$# does not consist of all punctuation.
The string !@ # $ does not consist of all punctuation.
The string *&$() consists of all punctuation.
注释
Note:
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.
参见
- ctype_cntrl() - Check for control character(s)
- ctype_graph() - Check for any printable character(s) except space
