Omit certain results from a random array PHP - php

Question

I'm trying to get 2 random results from an array of files in the "related" directory. I've managed to pull two results randomly from the directory but I need to avoid certain results depending on a variable relating to a specific file name.
My code so far is:
$foo = "bar.php";
function random_file($dir) {
$files = opendir($dir . '/*.php');
$rand_files = array_rand($files, 2);
return array(include $files[$rand_files[0]], include $files[$rand_files[1]]);
}
list($file_1,$file_2) = random_file("related");
I'm trying to pull two random results but avoid the file: bar.php. Does anyone know of a way to omit certain results from the array as I can't find anything online even close?

Answer 1

You can use glob function with a specific regex to only select names that are a match for you. This will limit your initial $files variable to results that do satisfy your condition and you can continue and do the random sampling without modifications.
// entries containing foo will not be included
function random_file($dir) {
$files = glob("^(?!bar.php)*");
$rand_files = array_rand($files, 2);
return array(include $files[$rand_files[0]], include $files[$rand_files[1]]);
}
list($file_1,$file_2) = random_file("related");

Answer 2

You also need to consider directories such as '.' and '..'. I think a switch statement and an unset() for those values in your overall array would work. Then once you have an array with files not including what you don't want. You can then pull two randoms and return that array.
This code may not be 100% perfect but should get you in the right direction.
function random_file($dir) {
$fileArray = array();
if (is_dir($dir)) {
if ($dh = opendir($dir . '/*.php')) {
while (($file = readdir($dh)) !== false) {
$fileArray = array_push($fileArray, $file)
}
for( $i = 0; $i < count($fileArray); $i++ ) {
switch($fileArray) {
case '.':
unset($array[$i]);
break;
case '..':
unset($array[$i]);
break;
case 'bar.php':
unset($array[$i]);
break;
}
}
}
closedir($dh);
}
$rand_files_keys = array_rand($fileArray, 2);
$rand_files = $fileArray[$rand_files_keys[0]];
$rand_files = $fileArray[$rand_files_keys[1]];
return $rand_files;

Answer 3

try this. It will keep randomizing your array until it selects two records excluding the bar.php
$rand_files = array_rand($files, 2);
while(in_array("bar.php",$rand_files))
{
$rand_files = array_rand($files, 2);
}