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"; } } ?>
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この例の出力は以下のようになります。
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. |
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ctype_alnum(), ctype_print(),
ctype_punct()も参照して下さい。