(PHP 4 >= 4.0.4, PHP 5)
ctype_cntrl — ﾀｩｸ賁ｸｻ妤ｫ､ﾉ､ｦ､ｫ､ｴ､ﾙ､�
ﾍｿ､ｨ､鬢�ｿﾊｸｻ昀� text ､ﾎ､ｹ､ﾙ､ﾆ､ﾎﾊｸｻ妤ｬﾀｩｸ賁ｸｻ妤ﾇ､｢､�ｫ､ﾉ､ｦ､ｫ､ｴ､ﾙ､ﾞ､ｹ｡｣ ﾀｩｸ賁ｸｻ妤ﾈ､ﾏ｡｢ﾎ网ｨ､ﾐ･鬣､･ﾕ･｣｡ｼ･ﾉ､茹ｿ･ﾖ｡｢･ｨ･ｹ･ｱ｡ｼ･ﾗ､ﾊ､ﾉ､ﾇ､ｹ｡｣
ﾄｴ､ﾙ､�ｸｻ昀｣
text ､ﾎ､ｹ､ﾙ､ﾆ､ﾎﾊｸｻ妤ｬｸｽｺﾟ､ﾎ･愠ｱ｡ｼ･�ﾎﾀｩｸ賁ｸｻ妤ﾀ､ﾃ､ｿｾ�遉ﾋ TRUE｡｢､ｽ､ｦ､ﾇ､ﾊ､､ｾ�遉ﾋ FALSE ､ﾖ､ｷ､ﾞ､ｹ｡｣
ﾎ�1 ctype_cntrl() ､ﾎﾎ�
<?php
$strings = array('string1' => "\n\r\t", 'string2' => 'arf12');
foreach ($strings as $name => $testcase) {
if (ctype_cntrl($testcase)) {
echo "The string '$name' consists of all control characters.\n";
} else {
echo "The string '$name' does not consist of all control characters.\n";
}
}
?>
ｾ螟ﾎﾎ网ﾎｽﾐﾎﾏ､ﾏｰﾊｲｼ､ﾈ､ﾊ､熙ﾞ､ｹ｡｣
The string 'string1' consists of all control characters. The string 'string2' does not consist of all control characters.