PHP implementation can add watermark and generate thumbnail processing tool

This article mainly introduces the PHP implementation can add watermark and generate thumbnail image processing tool class, involving PHP for image display, save, compress, watermark and other related operation skills, need friends can refer to, hope to help everyone.

ImageTool.class.php

<?phpclass imagetool{private $imagePath;//Picture path private $outputDir;//output folder private $MEMORYIMG;//Memory Image public Functio    n __construct ($imagePath, $outputDir = null) {$this->imagepath = $imagePath;    $this->outputdir = $outputDir;  $this->memoryimg = null; }/** * Displays images in memory * @param $image */Public Function showImage () {if ($this->memoryimg! = null) {$inf      o = getimagesize ($this->imagepath);      $type = Image_type_to_extension ($info [2], false);      Header (' Content-type: '. $info [' MIME ']);      $funs = "image{$type}";      $funs ($this->memoryimg);      Imagedestroy ($this->memoryimg);    $this->memoryimg = null; }}/** Save the picture as a file * @param $image */Private Function SaveImage ($image) {$info = getimagesize ($this-&GT;IMAGEP    ATH);    $type = Image_type_to_extension ($info [2], false);    $funs = "image{$type}"; if (Empty ($this->outputdir)) {$funs ($image, MD5 ($this->imagepath). '.' .    $type); } else {$fUNS ($image, $this->outputdir. MD5 ($this->imagepath). '.' .    $type);   }}/** * Compress picture * @param $width Compressed width * @param $height Compressed height * @param bool $output output file * @return Resource    */Public Function compressimage ($width, $height, $output = False) {$image = null;    $info = getimagesize ($this->imagepath);    $type = Image_type_to_extension ($info [2], false);    $fun = "imagecreatefrom{$type}";    $image = $fun ($this->imagepath);    $thumbnail = Imagecreatetruecolor ($width, $height);    Imagecopyresampled ($thumbnail, $image, 0, 0, 0, 0, $width, $height, $info [0], $info [1]);    Imagedestroy ($image);    if ($output) {$this->saveimage ($thumbnail);    } $this->memoryimg = $thumbnail;  return $this; /** * Add text tags to images * * @param $content text content * @param $size font size * @param $font font style * @param bool $output output FILE * @return $this */Public Function Addtextmark ($content, $size, $font, $output = False) {$info = getimagesize ($thiS->imagepath);    $type = Image_type_to_extension ($info [2], false);    $fun = "imagecreatefrom{$type}";    $image = $fun ($this->imagepath);    $color = Imagecolorallocatealpha ($image, 0, 0, 0, 80);    $posX = Imagesx ($image)-strlen ($content) * $size/2;    $posY = Imagesy ($image)-$size/1.5;    Imagettftext ($image, $size, 0, $posX, $posY, $color, $font, $content);    if ($output) {$this->saveimage ($image);    } $this->memoryimg = $image;  return $this; /** * Add watermark to Picture * * @param $watermark watermark Picture Path * @param $alpha watermark Transparency (0-100) * @param bool $output output file * @ret Urn $this */public Function Addwatermark ($watermark, $alpha, $output = False) {$image _info = getimagesize ($this-&    Gt;imagepath);    $image _type = image_type_to_extension ($image _info[2], false);    $image _fun = "imagecreatefrom{$image _type}";    $image = $image _fun ($this->imagepath);    $mark _info = getimagesize ($watermark); $mark _type = image_type_to_extension ($mark _info[2], FALSE);    $mark _fun = "imagecreatefrom{$mark _type}";    $mark = $mark _fun ($watermark);    $posX = Imagesx ($image)-Imagesx ($mark);    $posY = Imagesy ($image)-Imagesy ($mark);    Imagecopymerge ($image, $mark, $posX, $posY, 0, 0, $mark _info[0], $mark _info[1], $alpha);    if ($output) {$this->saveimage ($image);    } $this->memoryimg = $image;  return $this; }}

Imagetool use

First import the Imagetool tool:

Require_once ' ImageTool.class.php ';

Then instantiate the Imagetool object:

$imageTool = new Imagetool (' Img/oppman.jpeg ', ' out/');//Picture path, output folder

First, generate compressed pictures

$imageTool->compressimage (+, true);//compression width, compression height, whether to save $imagetool->showimage ();

Second, add text watermark

$imageTool->addtextmark (' One Punch Superman ', ' Res/micro.ttf ', true);//content, size, font, whether save $imagetool->showimage ();

Third, add image watermark

$imageTool->addwatermark (' res/logo.jpeg ', +, true);//watermark path, transparency, whether to save $imagetool->showimage ();

Only as temporary image output:

$imageTool->addtextmark (' Fast output ', ' Res/micro.ttf ')->showimage ();