ctype_lower
It seems that this function does not recognize characters such as '', '', '', '' as printable.
Depends on your locale settings, in the default "C" locale they are
indeed not printable as it is 7bit ASCII based. (hartmut)
ctype_print
(PHP 4 >= 4.0.4, PHP 5)
ctype_print — Check for printable character(s)
설명
bool ctype_print
( string $text
)
Checks if all of the characters in the provided string, text , are printable.
매개변수
- text
-
The tested string.
반환값
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.
예제
Example#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";
}
}
?>
위 예제의 출력:
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.
add a note
User Contributed Notesctype_print
flatline at greyhat dot nl
03-Mar-2004 04:58
03-Mar-2004 04:58