Php ctype digit () function

Write your php code

(PHP 4 >= 4.0.4, PHP 5)

ctype_digit -- Check for numeric character(s)

Syntax

bool ctype_digit ( string text )

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

Parameters

text: The tested string.

Return Values

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

Examples

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";
    }
}
?>

The above example will output:

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

Php ctype digit Function syntax tag

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Php ctype digit syntax tutorial

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