Funcții Ctype
PHP Manual

ctype_graph

(PHP 4 >= 4.0.4, PHP 5)

ctype_graphCheck for any printable character(s) except space

Descrierea

bool ctype_graph ( string $text )

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

Parametri

text

The tested string.

Valorile întoarse

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

Exemple

Example #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";
    }
}
?>

Exemplul de mai sus va afișa:

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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Funcții Ctype
PHP Manual