PHP implementation Batch Generation app various sizes logo_php tips

Source: Internet
Author: User
Tags explode

Use PHP GD, use good, one key to cut various sizes, pack and download. Always change the icon to understand, art to give you a 1024 logo, you have to PS a variety of sizes, so have this thing.

Core code

Copy Code code as follows:



<?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"]) && ($width > && ($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 [] = "Cannot find upload file";


if (Stristr ($this->error, "Dimension")) $error [] = "Upload picture size too large";


if (Stristr ($this->error, "extension")) $error [] = "not conforming to the required format";


if (Stristr ($this->error, "size") $error [] = "picture file is too large";


return $error;


}


Public Function error_string () {


$error = "";


if (Stristr ($this->error, "source") $error. = "No upload file found/";


if (Stristr ($this->error, "Dimension")) $error. = "Upload picture size too large/";


if (Stristr ($this->error, "extension")) $error. = "Not conforming to the required format/";


if (Stristr ($this->error, "size")) $error. = "Picture file too large/";


if (Eregi ("/$", $error)) {


$error = substr ($error, 0,-3);


}


return $error;


}


Public Function ext () {


return $this->ext;


}


}


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