Insertion Sort method with PHP

insertion_sort.php

<?php

$list = [4,3,1,5,2];

print_r("list: ". implode('|',$list) . PHP_EOL);

for ($i=0; $i < count($list); $i++) { 
	print_r($list[$i].PHP_EOL);

	$current = $list[$i];

	for ($j=$i-1; $j >= 0 && $list[$j] > $current; $j--) { 
		
		print_r("\t".$list[$j] . PHP_EOL);
		print_r("\tlist: ". implode('|',$list) . PHP_EOL );
		print_r("\ti: $i - j: $j" .PHP_EOL);
	
		$list[$j+1] = $list[$j];

		print_r("\tlist: ". implode('|',$list) . PHP_EOL );
	}

	$list[$j+1] = $current;

	print_r("list: ". implode('|',$list) . PHP_EOL . PHP_EOL);

}