imageflip

(PHP 5 >= 5.5.0, PHP 7, PHP 8)

imageflipFlips an image using a given mode

Description

imageflip(GdImage $image, int $mode): bool

Flips the image image using the given mode.

Parameters

image

A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().

mode

Flip mode, this can be one of the IMG_FLIP_* constants:

Constant Meaning
IMG_FLIP_HORIZONTAL Flips the image horizontally.
IMG_FLIP_VERTICAL Flips the image vertically.
IMG_FLIP_BOTH Flips the image both horizontally and vertically.

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.0.0 image expects a GdImage instance now; previously, a valid gd resource was expected.

Examples

Example #1 Flips an image vertically

This example uses the IMG_FLIP_VERTICAL constant.

<?php// File$filename = 'phplogo.png';// Content typeheader('Content-type: image/png');// Load$im = imagecreatefrompng($filename);// Flip it verticallyimageflip($im, IMG_FLIP_VERTICAL);// Outputimagejpeg($im);imagedestroy($im);?>

The above example will output something similar to:

Output of example: Vertically flipped image

Example #2 Flips the image horizontally

This example uses the IMG_FLIP_HORIZONTAL constant.

<?php// File$filename = 'phplogo.png';// Content typeheader('Content-type: image/png');// Load$im = imagecreatefrompng($filename);// Flip it horizontallyimageflip($im, IMG_FLIP_HORIZONTAL);// Outputimagejpeg($im);imagedestroy($im);?>

The above example will output something similar to:

Output of example: Horizontally flipped image