PHP Editor Review - PHP Classes : Thumbnail and Watermark

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Title: Thumbnail and Watermark Marked Cool (Review this resource)
Author: emiliort
Posted On: 2005-02-11
Category: Home > PHP Classes

Popularity: 2 points out of 10

Description: This is a PHP class that can process an image on the fly by either generating a thumbnail and/or apply a watermark to the image. The processed image can either be displayed in a page, saved to a file, or returned to a variable. It requires the PHP with support for GD library extension in either version 1 or 2. If the GD library version 2 is available, the class can manipulate the images in true color, thus providing better quality of the results of resized images.
Features description:
- Thumbnail: normal thumbnail generation
- Watermark: Text or image in PNG format. Suport multiples positions.
- Auto-fitting: adjust the dimensions so that the resized image aspect is not distorted
- Scaling: enlarge and shrink the image
- Format: both JPEG and PNG are supported, but the watermark image can only be in PNG format as it needs to be transparent
- Autodetect the GD library version supported by PHP
- Calculate quality factor for a specific file size in JPEG format.
- Suport bicubic resample algorithm
- Tested: PHP 4 valid

Total Hits: 4155 Total Votes: 0 Total Points: 0 (0 reviews) [ Download ]

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Docs For Class Thumbnail

Class Thumbnail

Description

This is a PHP class that can process an image on the fly by either generate a thumbnail and/or apply an watermark to the image.

The processed image can either be displayed in a page, saved to a file, or returned to a variable. It requires the PHP with support for GD library extension in either version 1 or 2. If the GD library version 2 is available it the class can manipulate the images in true color, thus providing better quality of the results of resized images. Features description: - Thumbnail: normal thumbnail generation - Watermark: Text or image in PNG format. Suport multiples positions. - Auto-fitting: adjust the dimensions so that the resized image aspect is not distorted - Scaling: enlarge and shrink the image - Format: both JPEG and PNG are supported, but the watermark image can only be in PNG format as it needs to be transparent - Autodetect the GD library version supported by PHP - Calculate quality factor for a specific file size in JPEG format. Based on Shiege Iseng Resize Class and Huda M Elmatsani JPEGReducer class

copyright: GNU General Public License (GPL)
abstract:
version: 1.41 <2005/02/08>
author: Emilio Rodriguez <mailto:emiliort@gmail.com>

Variable Summary

boolean $allow_enlarge

string $error_msg

string $img_watermark

string $img_watermark_Haling

string $img_watermark_Valing

integer $jpeg_progressive

string $memory_limit

string $output_format

integer $quality

string $txt_watermark

string $txt_watermark_color

integer $txt_watermark_font

string $txt_watermark_Haling

integer $txt_watermark_Hmargin

string $txt_watermark_Valing

integer $txt_watermark_Vmargin

Method Summary

boolean Thumbnail (string $imgfile)

void CalculateQFactor (integer $size)

mixed dump ()

boolean process ()

boolean save ([string $save = ""])

void show ()

boolean size_auto ([integer $size = 100])

boolean size_height ([integer $size = 100])

boolean size_width ([integer $size = 100])

Variables

boolean $allow_enlarge = false (line 81)

var: allow to enlarge the thumbnail.
access: public

string $error_msg = '' (line 146)

var: errors mensage
access: public

string $img_watermark = '' (line 87)

var: [OPTIONAL] set watermark source file, only PNG format [RECOMENDED ONLY WITH GD 2 ]
access: public

string $img_watermark_Haling = 'LEFT' (line 97)

var: [OPTIONAL] set watermark horizonatal position, LEFT | CENTER | RIGHT
access: public

string $img_watermark_Valing = 'TOP' (line 92)

var: [OPTIONAL] set watermark vertical position, TOP | CENTER | BOTTON
access: public

integer $jpeg_progressive (line 76)

var: set JPEG output format to progressive JPEG : 0 = no , 1 = yes
access: public

string $memory_limit = '8M' (line 140)

var: [OPTIONAL] set maximun memory usage, default 8 MB ('8M'). (use '16M' for big images)
access: public

string $output_format = 'JPG' (line 71)

var: output format, default JPG, valid values 'JPG' | 'PNG'
access: public

integer $quality = 75 (line 66)

var: Quality factor for JPEG output format, default 75
access: public

string $txt_watermark = '' (line 103)

var: [OPTIONAL] set watermark text [RECOMENDED ONLY WITH GD 2 ]
access: public

string $txt_watermark_color = '000000' (line 108)

var: [OPTIONAL] set watermark text color , RGB Hexadecimal[RECOMENDED ONLY WITH GD 2 ]
access: public

integer $txt_watermark_font = 1 (line 113)

var: [OPTIONAL] set watermark text font: 1,2,3,4,5
access: public

string $txt_watermark_Haling = 'LEFT' (line 123)

var: [OPTIONAL] set watermark text horizonatal position, LEFT | CENTER | RIGHT
access: public

integer $txt_watermark_Hmargin = 10 (line 128)

var: [OPTIONAL] set watermark text horizonatal margin in pixels
access: public

string $txt_watermark_Valing = 'TOP' (line 118)

var: [OPTIONAL] set watermark text vertical position, TOP | CENTER | BOTTON
access: public

integer $txt_watermark_Vmargin = 10 (line 133)

var: [OPTIONAL] set watermark text vertical margin in pixels
access: public

Methods

Constructor Thumbnail (line 161)

open source image

access: public

boolean Thumbnail (string $imgfile)

string $imgfile: filename of the source image file

CalculateQFactor (line 351)

Calculate JPEG quality factor for a specific size in bytes

access: public

void CalculateQFactor (integer $size)

integer $size: maximun file size in bytes

dump (line 266)

return the result thumbnail

access: public

mixed dump ()

process (line 297)

generate image

access: public

boolean process ()

save (line 277)

save your thumbnail to file

access: public

boolean save ([string $save = ""])

string $save: output file name

show (line 250)

show your thumbnail, output image and headers

access: public

void show ()

size_auto (line 234)

set the biggest width or height for thumbnail

access: public

boolean size_auto ([integer $size = 100])

integer $size: width or height

size_height (line 196)

set height for thumbnail

access: public

boolean size_height ([integer $size = 100])

integer $size: height

size_width (line 215)

set width for thumbnail

access: public

boolean size_width ([integer $size = 100])

integer $size: width

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