CODEWITHSUNDEEP
phpregex
user3201500
user3201500

Reputation: 1618

Check if last value after the dash (-) is a number in a string in PHP

i am trying to Check if last value after the dash (-) is a number in a string in PHP, if its a number then remove the value from last dash (-).

Here is how my string looks like:

about-us-1 or it might looks like about-us-new but i just want to trim only about-us-1 because it have a numeric value in last after dash.

And here is how my PHP function looks like:

public static function checkSlug($modelName, $id, $inputSlug = null){
            $i =1;
            $rows = self::getAllRow($modelName, $id);
            foreach($rows as $row){
                if($inputSlug == $row['slug']){
                    $inputSlug = $inputSlug."-".$i;
                    $i++;
                }
            }
            return $inputSlug;
        }

What it currently do is it adds a new number after - like this about-us-1-2

Looking for short and simple technique to fix this.

Thank you!

Upvotes: 2

Views: 1164

Answers (2)

Pupil
Pupil

Reputation: 23958

Use preg_replace()

<?php
$string = 'about-us-1';
$string = preg_replace('/-[0-9]*$/', '', $string);
echo $string; // about-us
?>

Upvotes: 1

anubhava
anubhava

Reputation: 785651

You can change this line:

$inputSlug = $inputSlug."-".$i;

to this:

$inputSlug = preg_replace('/-\d+$/', '', $inputSlug) . "-" . $i;

preg_replace('/-\d+$/', '', $inputSlug) will remove hyphen and trailing digits from input string if present.

Upvotes: 2

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