ctype_graph

(PHP 4 >= 4.0.4, PHP 5)

ctype_graph -- 空白以外の印字可能な文字かどうかを調べる

説明

bool ctype_graph ( string c )

textの全ての文字が印字可能で、実際に目に見える出力を 行う場合(空白でない場合)に TRUE、 それ以外の場合に FALSE を返します。

例 1. ctype_graph()の例

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

上の例の出力は以下となります:

The string 'string1' does not consist of all (visibly) printable characters.
The string 'string2' consists of all (visibly) printable characters.
The string 'string3' consists of all (visibly) printable characters.

ctype_alnum(), ctype_print(), ctype_punct()も参照してください。