Php image operations (1/3)

Php image operations this program can obtain the image size, format, and other information. It can also process the image thumbnails and add watermarks to the image.

Php tutorial image operations
This program can obtain the image size, format, and other information, as well as thumbnails and watermarks for the image.

Class image {
Public $ filename;
Private $ info;
Private $ im;

// Construct
Public function _ construct ($ filename ){
$ This-> filename = $ filename;
$ This-> info = @ getimagesize ($ filename );
If ($ this-> info [2]> 3) {echo "only supports gif, jpeg, and png formats. "; Exit ;}

}

// Load
Public function imgload (){
Switch ($ this-> info [2]) {
Case 1:
$ This-> im = @ imagecreatefromgif ($ this-> filename );
Break;
Case 2:
$ This-> im = @ imagecreatefromjpeg ($ this-> filename );
Break;
Case 3:
$ This-> im = @ imagecreatefrompng ($ this-> filename );
Break;
}
}

// Save
Public function imagesave ($ img, $ savename, $ inf ){
Switch ($ inf ){
Case 1:
Imagegif ($ img, $ savename );;
Break;
Case 2:
Imagejpeg ($ img, $ savename );;
Break;
Case 3:
Imagepng ($ img, $ savename );;
Break;
}
}

// Filter
Public function filter ($ arg = 1, $ savename = ''){
$ This-> imgload ();

If ($ savename = '') $ savename = 'f _ '. $ this-> filename;
$ OK = false;
Switch ($ arg ){
Case 1:
Imagefilter ($ this-> im, img_filter_negate); // reversed
$ OK = true;
Break;
Case 2:
Imagefilter ($ this-> im, img_filter_grayscale); // black/white
$ OK = true;
Break;
Case 3:
Imagefilter ($ this-> im, img_filter_emboss); // embossed
$ OK = true;
Break;
Case 4:
Imagefilter ($ this-> im, img_filter_gaussian_blur); // Gaussian blur
$ OK = true;
Break;
Case 5:
Imagefilter ($ this-> im, img_filter_brightness, 50); // brightness 50
$ OK = true;
Break;
Case 6:
Imagefilter ($ this-> im, img_filter_contrast,-50); // contrast-50
$ OK = true;
Break;
}
If ($ OK ){
$ This-> imagesave ($ this-> im, $ savename, $ this-> info [2]); // write a file
Imagedestroy ($ this-> im );
Return 1;
} Else {
Imagedestroy ($ this-> im );
Return 0 ;}
}
 

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