imageflip

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(PHP 5 >= 5.5.0, PHP 7)

imageflip — Flips an image using a given mode

Description

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

Flips the image image using the given mode.

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Parameters

image

An image resource, 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.

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Return Values

Returns TRUE on success or FALSE on failure.

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Examples

Example #1 Flips an image vertically

This example uses the IMG_FLIP_VERTICAL constant.


<?php
// File
$filename = 'phplogo.png';

// Content type
header('Content-type: image/png');

// Load
$im = imagecreatefrompng($filename);

// Flip it vertically
imageflip($im, IMG_FLIP_VERTICAL);

// Output
imagejpeg($im);
imagedestroy($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 type
header('Content-type: image/png');

// Load
$im = imagecreatefrompng($filename);

// Flip it horizontally
imageflip($im, IMG_FLIP_HORIZONTAL);

// Output
imagejpeg($im);
imagedestroy($im);
?>

The above example will output something similar to:

Output of example: Horizontally flipped image

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Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-imageflip.html

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References

Manuel PHP : http://php.net

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