phpThumb()

The output size is configurable (can be larger or smaller than the source), and the source may be the entire image or only a portion of the original image.

True color and resampling is used if GD v2.0 is available, otherwise paletted-color and nearest-neighbour resizing is used. ImageMagick is used wherever possible for speed.

Basic functionality is available even if GD functions are not installed (as long as ImageMagick is installed).

This is a complex library, supporting multiple options and features.

Features:

• Supported source image formats:
• JPEG (via GD or ImageMagick)
• PNG (via GD or ImageMagick)
• GIF (via GD, ImageMagick, or phpthumb.gif.php)
• BMP (via ImageMagick or phpthumb.bmp.php)
• Any image format ImageMagick can read
• Supported output image formats:
• JPEG (via GD or ImageMagick)
• PNG (via GD or ImageMagick)
• GIF (via GD or ImageMagick)
• BMP (via ImageMagick or phpthumb.bmp.php)
• ICO (via ImageMagick or phpthumb.ico.php)
• Image processing features:
• Source image can be a physical file on the local server, remote file over HTTP, or can be retrieved from a database.
• GIFs are supported on all versions of GD (even if GD does not have native GIF support) thanks to the GIF Util class by Fabien Ezber, or by ImageMagick.
• BMP source images can be used even if ImageMagick is not available.
• ImageMagick (if available) can be called to generate thumbnails for source images larger than PHP's memory limitation would allow a GD-only thumbnailer to do, or for image formats that GD does not support.
• phpThumb's basic features will work even if the server has no GD support, as long as ImageMagick is installed
• HTTP thumbnail creation can be limited to the current (or other list of) domain to prevent other sites from using your server to create their thumbnails.
• Linking to thumbnails from another domain can be prevented or watermarked.
• Thumbnails can be cached for less server load. Mulitple sizes of any source image can be cached seperately. Thumbnails are automatically updated when (local) source image is modified.
• Embedded EXIF thumbnails (if available) can be extracted as-is, or used as the source image for thumbnailing if the real source image would take more memory than PHP has available.
• Images can be rotated, either by an arbitary angle or auto-rotated to either portrait or landscape.
• Images can be cropped, either by a specified number of pixels or by a percentage of original image.
• Output is antialiased into the alpha channel where appropriate when PNG output is selected.
• Quality can be auto-adjusted to fit a certain output byte size.
• Filters that can be applied (most require GD v2.0 and/or PHP v4.3 , or ImageMagick):
• A watermark image or text can be applied over the thumbnail in one of 10 positions or tiled.
• A border or frame can be applied.
• Thumbnails can be a fixed dimension regardless of source aspect ratio and background filled with configurable color. Border corners can optionally be rounded (independant horizontal & vertical radius)
• Unsharp Mask sharpening can be applied thanks to Torstein Honsi's phpUnsharpMask function.
• Other filters:
• Alpha channel mask from mask file
• Auto Contrast / Levels
• Bevel edge
• Blur
• Brightness
• Colorize to target color by amount
• Contrast
• Drop shadow
• Edge Detect
• Flip Horizontal / Vertical
• Gamma
• Grayscale
• Mean Removal
• Negative color
• Reduce Color Depth
• Rounded Corners
• Saturation
• Sepia
• Smooth
• Threshold
• White Balance

What is new in this release:

• Bugfix:
• Incorrect variable name in phpThumb.php could prevent all hash values from matching.

What is new in version 1.7.11:

• Added even more explicit escaping of command line parameters.
• Disable all demos by default, user will need to comment out a line to run the demo.
• CleanUpCacheDirectory() is now only called once per hour, and skipped entirely if cache directory is not writable.
• 'file' paramter removed (use object mode instead).
• 'goto' paramter removed (use object mode instead).

Requirements:

• PHP 4.3.3 or higher