Question 40496 in PHP Question posted in
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How do I validate first 2 letter or numbers in a string in PHP?

I need to validate a string to check if the first two characters in a string are numbers.

I tried using in numeric but still had the issue that I did not want to check the whole string only the first two characters..

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2

Answers


  1. 0

    This can be done using a Regular Expression

    $string = "12example";
if (preg_match("/^[0-9]{2}/", $string)) {
    echo "The first two characters are numbers.";
} else {
    echo "The first two characters are not numbers.";
}
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  2. 0

    You can simply get the first two characters of the string on their own, and validate that:

    $str = "1234kjhgkdfkgjh";

$result = ctype_digit(substr($str, 0, 2));
var_dump($result);

    demo: https://3v4l.org/C33ui.

    Or you could use a Regular Expression, as per robotiaga’s answer

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