unique_random()

Complexity

Conditions	4
Paths	3

Size

Total Lines	37
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    function unique_random($table, $col, $chars = 16)
    {
        $unique = false;

        // Store tested results in array to not test them again
        $tested = [];

        do {

            // Generate random string of characters
            $random = Str::random($chars);

            // Check if it's already testing
            // If so, don't query the database again
            if (in_array($random, $tested)) {
                continue;
            }

            // Check if it is unique in the database
            $count = DB::table($table)->where($col, '=', $random)->count();

            // Store the random character in the tested array
            // To keep track which ones are already tested
            $tested[] = $random;

            // String appears to be unique
            if ($count == 0) {
                // Set unique to true to break the loop
                $unique = true;
            }

            // If unique is still false at this point
            // it will just repeat all the steps until
            // it has generated a random string of characters
        } while (! $unique);

        return $random;
    }