Ctype Funkcje
PHP Manual

ctype_graph

(PHP 4 >= 4.0.4, PHP 5)

ctype_graphCheck for any printable character(s) except space

Opis

bool ctype_graph ( string $text )

Checks if all of the characters in the provided string, text, creates visible output.

Parametry

text

The tested string.

Zwracane wartości

Returns TRUE if every character in text is printable and actually creates visible output (no white space), FALSE otherwise.

Przykłady

Przykład #1 A ctype_graph() example

<?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";
    }
}
?>

Powyższy przykład wyświetli:

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.

Notatki

Informacja:

If an integer between -128 and 255 inclusive is provided, it is interpreted as the ASCII value of a single character (negative values have 256 added in order to allow characters in the Extended ASCII range). Any other integer is interpreted as a string containing the decimal digits of the integer.

Zobacz też:


Ctype Funkcje
PHP Manual