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# ctype_punct

(PHP 4 >= 4.0.4, PHP 5)

ctype_punct -- Check for any printable character which is not whitespace or an alphanumeric character

## Description

bool ctype_punct ( string text )

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

範例 1. 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"; } } ?>`

The above example will output:

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

See also ctype_cntrl() and ctype_graph().

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