Combine image sequences as numbers of pics in a row which with multiple files. Depend on ImageMagic.

sequence_img_combine.php

<?php
$from = 1;
$to = 360;
$figure_lenght = 4; 
$pic_one_row = 3;
$file_prefix = "output_";
$file_extension = ".jpg";
$output_folder = "./result/";
$output_index = 1;

while ($from < $to) {
	$str_pics = '';
	for ($i = 0; $i < $pic_one_row; $i++) {
		$filename = $file_prefix.str_pad($from+$i, $figure_lenght, 0, STR_PAD_LEFT).$file_extension;
		if (file_exists("./".$filename)) {
			$str_pics .= $filename." ";
		}
	}
	exec("convert $str_pics +append $output_folder/result_" . str_pad($output_index, $figure_lenght, 0, STR_PAD_LEFT) . ".jpg");

	print $output_index ."\n";

	$output_index++;
	$from += $pic_one_row;
}