php图片合成（多张图片合成一张）

<?php ?????/** ????* 图片合并 ????**/ ???????$pic_list ??????= array( ?????????‘img2.png‘, ?????????‘img2.png‘, ?????????‘logo.png‘, ?????????‘logo.png‘, ?????????‘logo.png‘, ?????????‘img2.png‘, ?????????‘img2.png‘, ?????????‘img2.png‘, ?????????‘img2.png‘ ?????); ???????????$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[‘extension‘]) ) { ?????????????case ‘jpg‘: ?????????????case ‘jpeg‘: ?????????????????$imagecreatefromjpeg ???= ‘imagecreatefromjpeg‘; ?????????????break; ?????????????case ‘png‘: ?????????????????$imagecreatefromjpeg ???= ‘imagecreatefrompng‘; ?????????????break; ?????????????case ‘gif‘: ?????????????default: ?????????????????$imagecreatefromjpeg ???= ‘imagecreatefromstring‘; ?????????????????$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"); ????????> ?