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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