ctype
PHP Manual

ctype_digit

(PHP 4 >= 4.0.4, PHP 5)

ctype_digit — Check for numeric character(s)

Descrierea

bool ctype_digit ( string $text )

Checks if all of the characters in the provided string, text , are numerical.

Parametri

text

The tested string.

Valorile întroarse

Returns TRUE if every character in text is a decimal digit, FALSE otherwise.

Exemple

Example#1 A ctype_digit() example

<?php
$strings 
= array('1820.20''10002''wsl!12');
foreach (
$strings as $testcase) {
    if (
ctype_digit($testcase)) {
        echo 
"The string $testcase consists of all digits.\n";
    } else {
        echo 
"The string $testcase does not consist of all digits.\n";
    }
}
?>

Exemplul de mai sus va afişa:

The string 1820.20 does not consist of all digits.
The string 10002 consists of all digits.
The string wsl!12 does not consist of all digits.

Vedeţi de asemenea


ctype
PHP Manual