PHP Function for API Memetrash

memetrash.php

<?php
function lolz($msg) {
    $text = ereg_replace("[^A-Za-z0-9 ]", "", $msg);
    $text = substr($text, 0, 64);

    $curlchanel = curl_init("https://api.memetrash.co.uk/cat");
    curl_setopt($curlchanel, CURLOPT_TIMEOUT, 6);
    curl_setopt($curlchanel, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curlchanel, CURLOPT_POSTFIELDS, trim("text=$text"));
    $wynik=curl_exec($curlchanel);
    curl_close($curlchanel);

    $json = json_decode($wynik, true);

    if(filter_var($json['data']['images'][0], FILTER_VALIDATE_URL) === FALSE) {
       $result = 'Erroz, such Lolz!';
    } else {
       $result = $json['data']['images'][0];
    }

    return $result;
}