PHP image watermark Add, compress, cut package class, _php tutorial

PHP image watermark Add, compress, cut the package class,

PHP operation of the image file is mainly to use the GD library extension. When we frequently use PHP to manipulate images, we naturally encapsulate many functions, otherwise we will write too many repetitive code. When there are a lot of related functions of the picture, we can consider the function also to tidy up, so there is the idea of encapsulation into class.

The operation of the picture is mainly four steps:

1,3,4 three steps each time to write, each time is similar. The only step that really needs to be flexible is to manipulate the picture. Operation pictures are often done by 1 or more major GD functions.

This article encapsulates four kinds of methods inside the class, the text watermark (Imagettftext ()), the Picture watermark (Imagecopymerge ()), the picture compress, the picture shearing (imagecopyresampled ()), the other commonly used GD function does not repeat. Directly on the code:

 Phpclassimage{Private$info; Private$image;  Public$type;  Publicfunction __construct ($SRC) {$ This->info=getimagesize ($SRC); $ This->type=image_type_to_extension ($ This->info['2'],false); $fun="imagecreatefrom{$this->type}"; $ This->image=$fun ($SRC); }    /** * Text watermark * @param [type] $font font * @param [type] $content content * @param [type] $size text     Size * @param [type] $col text color (four-tuple array) * @param array $location position * @param integer $angle tilt angle * @return [Type]*/     Publicfunction Fontmark ($font, $content, $size, $col, $location, $angle =0) {$col=imagecolorallocatealpha ($ This->image, $col ['0'], $col ['1'], $col ['2'], $col ['3']); Imagettftext ($ This->image, $size, $angle, $location ['0'], $location ['1'], $col, $font, $content); }        /** * Image watermark * @param [type] $imageMark watermark image Address * @param [type] $dst the position of the watermark picture in the original picture * @param [type] $pct Transparency * @return [type]*/     Publicfunction ImageMark ($imageMark, $DST, $pct) {$info 2=getimagesize ($imageMark); $type=image_type_to_extension ($info 2['2'],false); $func 2="Imagecreatefrom". $type; $water=$func 2 ($imageMark); Imagecopymerge ($ This->image, $water, $DST [0], $DST [1],0,0, $info 2['0'], $info 2['1'], $pct);    Imagedestroy ($water); }    /** * Compress picture * @param [type] $thumbSize compress picture size * @return [type] [description]*/     Publicfunction Thumb ($thumbSize) {$imageThumb=imagecreatetruecolor ($thumbSize [0], $thumbSize [1]); Imagecopyresampled ($imageThumb, $ This->image,0,0,0,0, $thumbSize [0], $thumbSize [1], $ This->info['0'], $ This->info['1']); Imagedestroy ($ This-image); $ This->image=$imageThumb; }    /** * Crop picture * @param [type] $cutSize crop size * @param [type] $location crop position * @return [type] [de Scription]*/      Publicfunction Cut ($cutSize, $location) {$imageCut=imagecreatetruecolor ($cutSize [0], $cutSize [1]); Imagecopyresampled ($imageCut, $ This->image,0,0, $location [0], $location [1], $cutSize [0], $cutSize [1], $cutSize [0], $cutSize [1]); Imagedestroy ($ This-image); $ This->image=$imageCut; }    /** * Show image * @return [type] [description]*/     Publicfunction Show () {Header ("Content-type:".$ This->info['MIME']); $funn="Image".$ This-type; $funn ($ This-image); }    /** * Save picture * @param [type] $newname new picture name * @return [Type] [description]*/      Publicfunction Save ($newname) {header ("Content-type:".$ This->info['MIME']); $funn="Image".$ This-type; $funn ($ This->image, $newname.'.'.$ This-type); }      Publicfunction __destruct () {Imagedestroy ($ This-image); } } ?>

If you need to do something else, just add it to this class.

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