ctype_graph

(PHP 4 >= 4.0.4, PHP 5)

ctype_graph — Check 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.

Note

Notă:
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.

Vedeți de asemenea

ctype_alnum() - Check for alphanumeric character(s)
ctype_print() - Check for printable character(s)
ctype_punct() - Check for any printable character which is not whitespace or an alphanumeric character

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