PHP Decode

<?php $formats = array( 1, 2, 3, 4, 5 ); for ( $i = count( $formats ); 0 < $i; $i-- ) { ..

<?php 
$formats = array( 1, 2, 3, 4, 5 ); 
for ( $i = count( $formats ); 0 < $i; $i-- ) { 
		$playlist_key = sprintf( 'adaptive_%d', $i ); 
 
	} ?>

<?php
$formats = array( 1, 2, 3, 4, 5 );
for ( $i = count( $formats ); 0 < $i; $i-- ) {
		$playlist_key = sprintf( 'adaptive_%d', $i );

	}

count	1
sprintf	1

$i	5
$formats	[{'key': 0, 'value': 1}, {'key': 1, 'value': 2}, {'key': 2, 'value': 3}, {'key': 3, 'value': 4}, {'key': 4, 'value': 5}]