Uploads. php file Class image_upload {
Private $ srcimg; // original image
Private $ destimg; // target image
Private $ width; // The width of the original image.
Private $ height; // The height of the original image
Private $ type; // the image type of the original file
Private $ thumb_width; // The width of the thumbnail.
Private $ thumb_height; // The height of the thumbnail.
Private $ cut; // whether to cut the image to the specified height
Private $ tmp; // temporary address for uploading images
Private $ error;
Private $ im; // create a temporary Image handle
Private $ new_name; // new name of the uploaded file
Function _ construct ($ srcimg, $ t_width, $ t_height, $ cut, $ tmp, $ error ){
$ This-> srcimg = $ srcimg;
$ This-> thumb_width = $ t_width;
$ This-> thumb_height = $ t_height;
$ This-> cut = $ cut;
$ This-> tmp = $ tmp;
$ This-> error = $ error;
$ This-> get_srcimg_type ();
$ This-> get_new_upload_name ();
}
Function img_upload (){
// File Upload method
$ This-> check_error ($ this-> error );
$ This-> in_type ();
$ Dst_dir = './images ';
If (! Is_dir ($ dst_dir )){
Mkdir ($ dst_dir );
Echo "%
";
}
If (is_uploaded_file ($ this-> tmp )){
If (move_uploaded_file ($ this-> tmp, $ this-> new_name )){
Echo "file uploaded successfully
";
Return true;
} Else {
Echo 'file cannot be moved, upload failed ';
Exit;
}
} Else {
Echo 'file Upload may be attacked ';
Exit;
}
}
Function make_thumbnail (){
// Method for generating thumbnails
$ This-> get_dest_imgpath ();
$ This-> make_im ();
$ This-> width = imagesx ($ this-> im );
$ This-> height = imagesy ($ this-> im );
$ Thumb_ratio = $ this-> thumb_width/$ this-> thumb_height;
$ Ratio = $ this-> width/$ this-> height;
If ($ this-> cut = 1) {// whether to crop
If ($ ratio >=$ thumb_ratio ){
$ Img = imagecreatetruecolor ($ this-> thumb_width, $ this-> thumb_height );
Imagecopyresampled ($ img, $ this-> im, 0, 0, 0, 0, $ this-> thumb_width, $ this-> thumb_height, $ this-> height * $ thumb_ratio, $ this-> height );
Imagejpeg ($ img, $ this-> destimg );
Echo "the thumbnail is successfully generated ";
} Else {
$ Img = imagecreatetruecolor ($ this-> thumb_width, $ this-> thumb_height );
Imagecopyresampled ($ img, $ this-> im, 0, 0, 0, 0, $ this-> thumb_width, $ this-> thumb_height, $ this-> width, $ this-> width/$ thumb_ratio );
Imagejpeg ($ img, $ this-> destimg );
Echo "the thumbnail is successfully generated ";
}
} Else {
If ($ ratio >=$ thumb_ratio ){
$ Img = imagecreatetruecolor ($ this-> thumb_height * $ thumb_ratio, $ this-> thumb_height );
Imagecopyresampled ($ img, $ this-> im, 0, 0, 0, 0, $ this-> thumb_height * $ thumb_ratio, $ this-> thumb_height, $ this-> width, $ this-> height );
Imagejpeg ($ img, $ this-> destimg );
Echo "the thumbnail is successfully generated ";
} Else {
$ Img = imagecreatetruecolor ($ this-> thumb_width, $ this-> thumb_width/$ thumb_ratio );
Imagecopyresampled ($ img, $ this-> im, 0, 0, 0, 0, $ this-> thumb_width, $ this-> thumb_width/$ thumb_ratio, $ this-> width, $ this-> height );
Imagejpeg ($ img, $ this-> destimg );
Echo "the thumbnail is successfully generated ";
}
}
Imagedestroy ($ this-> im );
Imagedestroy ($ img );
}
Private function check_error ($ error ){
// Check the file upload errors;
If ($ error> 0 ){
Switch ($ error ){
Case 1:
Echo "the size of the uploaded file exceeds the configured value in the PHP. ini file.
";
Break;
Case 2:
Echo "the size of the uploaded file exceeds the size limit in the form.
";
Break;
Case 3:
Echo "only some files are uploaded
";
Break;
Case 4:
Echo "no file is uploaded
";
Break;
Case 6:
Echo "php. ini does not set the temporary unknown for storing images.
";
Break;
Case 7:
Echo "hard disk cannot be written, upload failed
";
Break;
Default:
Echo "Unknown error ";
Break;
}
}
}
Private function get_srcimg_type (){
// Determine the image type of the source file
$ This-> type = substr (strrchr ($ this-> srcimg, '.'), '1 ');
}
Private function in_type (){
// Check whether the file meets the type
$ Type_arr = array ('GIF', 'jpg ', 'PNG ');
If (! In_array ($ this-> type, $ type_arr )){
Echo "only supports PNG, GIF, and JPG file formats ......, Upload the correct format again ";
Exit;
}
}
Private function get_new_upload_name (){
// Generate a new name for the uploaded file
$ This-> new_name = 'Images/'. date ('ymdhis'). '.'. $ this-> type;
}
Private function make_im (){
// Create an image from the original file
Switch ($ this-> type ){
Case 'jpg ':
$ This-> im = imagecreatefromjpeg ($ this-> new_name );
Break;
Case 'GIF ':
$ This-> im = imagecreatefromgif ($ this-> new_name );
Break;
Case 'PNG ':
$ This-> im = imagecreatefrompng ($ this-> new_name );
Break;
}
}
Private function get_dest_imgpath (){
// Obtain the storage path of the thumbnail.
$ Len1 = strlen ($ this-> new_name );
$ Len2 = strlen (strrchr ($ this-> new_name ,'.'));
$ Len3 = $ len1-$ len2;
$ This-> destimg = substr ($ this-> new_name, 0, $ len3). '_ small.'. $ this-> type;
}
}
Print_r ($ _ FILES );
$ File = $ _ FILES ['image'];
Echo $ file ['name'];
$ Uploads = new image_upload ($ file ['name'], 120,160, 1, $ file ['tmp _ name'], $ file ['error']);
If ($ uploads-> img_upload ()){
$ Uploads-> make_thumbnail ();
}
?>
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