PHP实现批量生成App各种尺寸Logo
发布:smiling 来源: PHP粉丝网 添加日期:2021-05-17 11:03:25 浏览: 评论:0
这篇文章主要介绍了PHP实现批量生成App各种尺寸Logo的方法和示例的核心代码,非常的简单实用,这里推荐给小伙伴们,有需要的可以参考下。
使用PHP GD,使用良好,一键剪裁各种尺寸,打包下载。经常换icon的懂的,美工给你一个1024的logo,你得ps出各种尺寸,于是有了这个东西。
核心代码:
- <?php
 - class image {
 - /**
 - * source image
 - *
 - * @var string|array
 - */
 - private $source;
 - /**
 - * temporay image
 - *
 - * @var file
 - */
 - private $image;
 - private $ext;
 - /**
 - * erros
 - *
 - * @var array
 - */
 - private $error;
 - /**
 - * construct
 - *
 - * @param string|array $source
 - */
 - public function __construct($source = NULL) {
 - if($source != NULL) {
 - $this->source($source);
 - }
 - }
 - /**
 - * set the source image
 - *
 - * @param string|array $source
 - */
 - public function source($source) {
 - if(!is_array($source)) {
 - $this->source["name"] = $source;
 - $this->source["tmp_name"] = $source;
 - $type = NULL;
 - $ext = strtolower(end(explode(".",$source)));
 - switch($ext) {
 - case "jpg" :
 - case "jpeg" : $type = "image/jpeg"; break;
 - case "gif" : $type = "image/gif"; break;
 - case "png" : $type = "image/png"; break;
 - }
 - $this->source["type"] = $type;
 - } else {
 - $this->source = $source;
 - }
 - $this->destination = $this->source["name"];
 - }
 - /**
 - * resize the image
 - *
 - * @param int $width
 - * @param int $height
 - */
 - public function resize($width = NULL,$height = NULL) {
 - if(isset($this->source["tmp_name"]) && file_exists($this->source["tmp_name"])) {
 - list($source_width,$source_height) = getimagesize($this->source["tmp_name"]);
 - if(($width == NULL) && ($height != NULL)) {
 - $width = ($source_width * $height) / $source_height;
 - }
 - if(($width != NULL) && ($height == NULL)) {
 - $height = ($source_height * $width) / $source_width;
 - }
 - if(($width == NULL) && ($height == NULL)) {
 - $width = $source_width;
 - $height = $source_height;
 - }
 - switch($this->source["type"]) {
 - case "image/jpeg" : $created = imagecreatefromjpeg($this->source["tmp_name"]); break;
 - case "image/gif" : $created = imagecreatefromgif($this->source["tmp_name"]); break;
 - case "image/png" : $created = imagecreatefrompng($this->source["tmp_name"]); break;
 - }
 - $this->image = imagecreatetruecolor($width,$height);
 - imagecopyresampled($this->image,$created,0,0,0,0,$width,$height,$source_width,$source_height);
 - }
 - }
 - /**
 - * add watermark on image
 - *
 - * @param string $mark
 - * @param int $opac
 - * @param int $x_pos
 - * @param int $y_pos
 - */
 - public function watermark($mark,$opac,$x_pos,$y_pos) {
 - if(file_exists($mark) && ($this->image != "")) {
 - $ext = strtolower(end(explode(".",$mark)));
 - switch($ext) {
 - case "jpg" :
 - case "jpeg" : $watermark = imagecreatefromjpeg($mark); break;
 - case "gif" : $watermark = imagecreatefromgif($mark); break;
 - case "png" : $watermark = imagecreatefrompng($mark); break;
 - }
 - list($watermark_width,$watermark_height) = getimagesize($mark);
 - $source_width = imagesx($this->image);
 - $source_height = imagesy($this->image);
 - if($x_pos == "top") $pos = "t"; else $pos = "b";
 - if($y_pos == "left") $pos .= "l"; else $pos .= "r";
 - $dest_x = 0;
 - $dest_y = 0;
 - switch($pos) {
 - case "tr" : $dest_x = $source_width - $watermark_width; break;
 - case "bl" : $dest_y = $source_height - $watermark_height; break;
 - case "br" : $dest_x = $source_width - $watermark_width; $dest_y = $source_height - $watermark_height; break;
 - }
 - imagecopymerge($this->image,$watermark,$dest_x,$dest_y,0,0,$watermark_width,$watermark_height,$opac);
 - }
 - }
 - /**
 - * crop the image
 - *
 - * @param int $x
 - * @param int $y
 - * @param int $width
 - * @param int $height
 - */
 - public function crop($x,$y,$width,$height) {
 - if(isset($this->source["tmp_name"]) && file_exists($this->source["tmp_name"]) && ($width > 10) && ($height > 10)) {
 - switch($this->source["type"]) {
 - case "image/jpeg" : $created = imagecreatefromjpeg($this->source["tmp_name"]); break;
 - case "image/gif" : $created = imagecreatefromgif($this->source["tmp_name"]); break;
 - case "image/png" : $created = imagecreatefrompng($this->source["tmp_name"]); break;
 - }
 - $this->image = imagecreatetruecolor($width,$height);
 - imagecopy($this->image,$created,0,0,$x,$y,$width,$height);
 - }
 - }
 - /**
 - * create final image file
 - *
 - * @param string $destination
 - * @param int $quality
 - */
 - public function create($destination,$quality = 100) {
 - if($this->image != "") {
 - $extension = substr($destination,-3,3);
 - switch($extension) {
 - case "gif" :
 - imagegif($this->image,$destination,$quality);
 - break;
 - case "png" :
 - $quality = ceil($quality/10) - 1;
 - imagepng($this->image,$destination,$quality);
 - break;
 - default :
 - imagejpeg($this->image,$destination,$quality);
 - break;
 - }
 - }
 - }
 - /**
 - * check if extension is valid
 - *
 - */
 - public function validate_extension() {
 - if(isset($this->source["tmp_name"]) && file_exists($this->source["tmp_name"])) {
 - $exts = array("image/jpeg", "image/pjpeg", "image/png", "image/x-png");
 - $ext = $this->source["type"];
 - $valid = 0;
 - $this->ext = '.not_found';
 - if ($ext == $exts[0] || $ext == $exts[1]) {
 - $valid = 1;
 - $this->ext = '.jpg';
 - }
 - // if ($ext == $exts[2]) {
 - // $valid = 1;
 - // $this->ext = '.gif';
 - // }
 - if ($ext == $exts[2] || $ext == $exts[3]) {
 - $valid = 1;
 - $this->ext = '.png';
 - }
 - if($valid != 1) {
 - $this->error .= "extension";
 - }
 - } else {
 - $this->error .= "source";
 - }
 - }
 - /**
 - * check if the size is correct
 - *
 - * @param int $max
 - */
 - public function validate_size($max) {
 - if(isset($this->source["tmp_name"]) && file_exists($this->source["tmp_name"])) {
 - $max = $max * 1024;
 - if($this->source["size"] >= $max) {
 - $this->error .= "size";
 - }
 - } else {
 - $this->error .= "source";
 - }
 - }
 - /**
 - * check if the dimension is correct
 - *
 - * @param int $limit_width
 - * @param int $limit_height
 - */
 - public function validate_dimension($limit_width,$limit_height) {
 - if(isset($this->source["tmp_name"]) && file_exists($this->source["tmp_name"])) {
 - list($source_width,$source_height) = getimagesize($this->source["tmp_name"]);
 - if(($source_width > $limit_width) || ($source_height > $limit_height)) {
 - $this->error .= "dimension";
 - }
 - } else {
 - $this->error .= "source";
 - }
 - }
 - /**
 - * get the found errors
 - *
 - */
 - public function error() {
 - $error = array();
 - if(stristr($this->error,"source")) $error[] = "找不到上传文件";
 - if(stristr($this->error,"dimension")) $error[] = "上传图片尺寸太大";
 - if(stristr($this->error,"extension")) $error[] = "不符合要求的格式";
 - if(stristr($this->error,"size")) $error[] = "图片文件太大";
 - return $error;
 - }
 - public function error_string() {
 - $error = "";
 - if(stristr($this->error,"source")) $error .= "找不到上传文件 / ";
 - if(stristr($this->error,"dimension")) $error .= "上传图片尺寸太大 / ";
 - if(stristr($this->error,"extension")) $error .= "不符合要求的格式 / ";
 - if(stristr($this->error,"size")) $error .= "图片文件太大 / ";
 - if(eregi(" / $", $error)) {
 - $error = substr($error, 0, -3);
 - }
 - return $error;
 - }
 - public function ext() {
 - return $this->ext;
 - }
 - }
 
以上就是本文所述的全部内容了,希望大家能够喜欢。
Tags: PHP批量生成App
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