Cofem/lib/script_data.php

<?php
declare(strict_types=1);
function generateScriptData($phpArray):string {
    // Check if the array is associative and single-level
    if (is_array($phpArray) && count($phpArray) > 0 && count(array_filter(array_keys($phpArray), 'is_string')) === count($phpArray)) {
        // Generate JavaScript code to save each array element to local storage
        $out = "<script>";
        foreach ($phpArray as $key => $value) {
            $escapedKey = addslashes($key); // Escape special characters in the key
            $escapedValue = addslashes($value); // Escape special characters in the value

            $out .= "localStorage.setItem('$escapedKey', '$escapedValue');";
        }
        $out.= "</script>";
    } else {
        $out = "<script>console.error('Invalid PHP array. Must be single-level and associative.');</script>";
    }
    return $out;
}