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# ctype_print

(PHP 4 >= 4.0.4, PHP 5)

ctype_print -- Check for printable character(s)

## Description

bool ctype_print ( string text)

Returns `TRUE` if every character in text will actually create output (including blanks). Returns `FALSE` if text contains control characters or characters that do not have any output or control function at all.

示範 1.A ctype_print() example
`<?php $strings = array('string1' => "asdf\n\r\t", 'string2' => 'arf12', 'string3' => 'LKA#@%.54'); foreach ($strings as $name => $testcase) { if (ctype_print($testcase)) { echo "The string '$name' consists of all printable characters.\n"; } else { echo "The string '$name' does not consist of all printable characters.\n"; } } ?>`
This example will output :
    The string 'string1' does not consist of all printable characters.
    The string 'string2' consists of all printable characters.
    The string 'string3' consists of all printable characters.

See also ctype_cntrl(), ctype_graph(), and ctype_punct().

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