How to combine multiple pictures into one using PHP

The synthesis here is to combine multiple pictures into one, not into a GIF picture. Friends who need it can download it directly.

Image synthesis can be displayed on the browser and saved to the folder

The example is as follows:

<?php
 /**
 * 图片合并
 **/
  
 $pic_list  = array(
  &#39;img2.png&#39;,
  &#39;img2.png&#39;,
  &#39;logo.png&#39;,
  &#39;logo.png&#39;,
  &#39;logo.png&#39;,
  &#39;img2.png&#39;,
  &#39;img2.png&#39;,
  &#39;img2.png&#39;,
  &#39;img2.png&#39;
 );
   
 $pic_list = array_slice($pic_list, 0, 9); // 只操作前9个图片
  
 $bg_w = 150; // 背景图片宽度
 $bg_h = 150; // 背景图片高度
  
 $background = imagecreatetruecolor($bg_w,$bg_h); // 背景图片
 $color = imagecolorallocate($background, 202, 201, 201); // 为真彩色画布创建白色背景，再设置为透明
 imagefill($background, 0, 0, $color);
 imageColorTransparent($background, $color);
  
 $pic_count = count($pic_list);
 $lineArr = array(); // 需要换行的位置
 $space_x = 3;
 $space_y = 3;
 $line_x = 0;
 switch($pic_count) {
 case 1: // 正中间
  $start_x = intval($bg_w/4); // 开始位置X
  $start_y = intval($bg_h/4); // 开始位置Y
  $pic_w = intval($bg_w/2); // 宽度
  $pic_h = intval($bg_h/2); // 高度
  break;
 case 2: // 中间位置并排
  $start_x = 2;
  $start_y = intval($bg_h/4) + 3;
  $pic_w = intval($bg_w/2) - 5;
  $pic_h = intval($bg_h/2) - 5;
  $space_x = 5;
  break;
 case 3:
  $start_x = 40; // 开始位置X
  $start_y = 5; // 开始位置Y
  $pic_w = intval($bg_w/2) - 5; // 宽度
  $pic_h = intval($bg_h/2) - 5; // 高度
  $lineArr = array(2);
  $line_x = 4;
  break;
 case 4:
  $start_x = 4; // 开始位置X
  $start_y = 5; // 开始位置Y
  $pic_w = intval($bg_w/2) - 5; // 宽度
  $pic_h = intval($bg_h/2) - 5; // 高度
  $lineArr = array(3);
  $line_x = 4;
  break;
 case 5:
  $start_x = 30; // 开始位置X
  $start_y = 30; // 开始位置Y
  $pic_w = intval($bg_w/3) - 5; // 宽度
  $pic_h = intval($bg_h/3) - 5; // 高度
  $lineArr = array(3);
  $line_x = 5;
  break;
 case 6:
  $start_x = 5; // 开始位置X
  $start_y = 30; // 开始位置Y
  $pic_w = intval($bg_w/3) - 5; // 宽度
  $pic_h = intval($bg_h/3) - 5; // 高度
  $lineArr = array(4);
  $line_x = 5;
  break;
 case 7:
  $start_x = 53; // 开始位置X
  $start_y = 5; // 开始位置Y
  $pic_w = intval($bg_w/3) - 5; // 宽度
  $pic_h = intval($bg_h/3) - 5; // 高度
  $lineArr = array(2,5);
  $line_x = 5;
  break;
 case 8:
  $start_x = 30; // 开始位置X
  $start_y = 5; // 开始位置Y
  $pic_w = intval($bg_w/3) - 5; // 宽度
  $pic_h = intval($bg_h/3) - 5; // 高度
  $lineArr = array(3,6);
  $line_x = 5;
  break;
 case 9:
  $start_x = 5; // 开始位置X
  $start_y = 5; // 开始位置Y
  $pic_w = intval($bg_w/3) - 5; // 宽度
  $pic_h = intval($bg_h/3) - 5; // 高度
  $lineArr = array(4,7);
  $line_x = 5;
  break;
 }
 foreach( $pic_list as $k=>$pic_path ) {
  $kk = $k + 1;
  if ( in_array($kk, $lineArr) ) {
   $start_x = $line_x;
   $start_y = $start_y + $pic_h + $space_y;
  }
  $pathInfo = pathinfo($pic_path);
  switch( strtolower($pathInfo[&#39;extension&#39;]) ) {
   case &#39;jpg&#39;:
   case &#39;jpeg&#39;:
    $imagecreatefromjpeg = &#39;imagecreatefromjpeg&#39;;
   break;
   case &#39;png&#39;:
    $imagecreatefromjpeg = &#39;imagecreatefrompng&#39;;
   break;
   case &#39;gif&#39;:
   default:
    $imagecreatefromjpeg = &#39;imagecreatefromstring&#39;;
    $pic_path = file_get_contents($pic_path);
   break;
  }
  $resource = $imagecreatefromjpeg($pic_path);
  // $start_x,$start_y copy图片在背景中的位置
  // 0,0 被copy图片的位置
  // $pic_w,$pic_h copy后的高度和宽度
  imagecopyresized($background,$resource,$start_x,$start_y,0,0,$pic_w,$pic_h,imagesx($resource),imagesy($resource)); // 最后两个参数为原始图片宽度和高度，倒数两个参数为copy时的图片宽度和高度
  $start_x = $start_x + $pic_w + $space_x;
 }
  
 header("Content-type: image/jpg");
 imagejpeg($background);
 imagegif($background, "./hero_gam.png");
   
?>

I believe you have mastered the methods after reading these cases. For more exciting information, please pay attention to other related articles on the php Chinese website!

Related reading:

php synthesis or creation of gif animation

php imagick extensionComposite pictures Two methods_PHP tutorial

##GD functionComposite pictureRelated questions (one jpg, one png)

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