CODEWITHSUNDEEP
phppreg-matchnumeric
Tomi Seus
Tomi Seus

Reputation: 1161

Find if numeric character in PHP String

Sorry for asking this simple question, but I seem not to find any answers.

How can you check whether there is a number within a string?

I've tried:

    $string = "this is a simple string with a number 2432344";
    if (preg_match('/[^0-9]/', "$string")) {
        echo "yes a number";
    } else {
        echo "no number";
    }

Doesn't seem to work...

Upvotes: 0

Views: 1648

Answers (2)

Dennis Hackethal
Dennis Hackethal

Reputation: 14305

^ will only negate what's in the regex. You don't need to use it.

Upvotes: 0

Ry-
Ry-

Reputation: 225291

If you want to find a number, don't negate the character set with ^ in your regular expression. That means "match anything except a number".

$string = "this is a simple string with a number 2432344";

if (preg_match('/[0-9]/', "$string")) {
    echo "yes a number";
} else {
    echo "no number";
}

Also, you could just use \d instead of [0-9], and $string instead of "$string".

Upvotes: 9

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