Flips an image using a given mode (original) (raw)

imageflip

(PHP 5 >= 5.5.0, PHP 7)

imageflip — Flips an image using a given mode

Description

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

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.

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 Flips an image vertically

This example uses the IMG_FLIP_VERTICAL constant.

<?php // File $filename = 'phplogo.png';// Content type header('Content-type: image/png');// Load <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>i</mi><mi>m</mi><mo>=</mo><mi>i</mi><mi>m</mi><mi>a</mi><mi>g</mi><mi>e</mi><mi>c</mi><mi>r</mi><mi>e</mi><mi>a</mi><mi>t</mi><mi>e</mi><mi>f</mi><mi>r</mi><mi>o</mi><mi>m</mi><mi>p</mi><mi>n</mi><mi>g</mi><mo stretchy="false">(</mo></mrow><annotation encoding="application/x-tex">im = imagecreatefrompng(</annotation></semantics></math>im=imagecreatefrompng(filename);// Flip it vertically imageflip($im, IMG_FLIP_VERTICAL);// Output imagejpeg($im); imagedestroy($im); ?>

The above example will output something similar to:

Example #2 Flips the image horizontally

This example uses the IMG_FLIP_HORIZONTAL constant.

<?php // File $filename = 'phplogo.png';// Content type header('Content-type: image/png');// Load <math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>i</mi><mi>m</mi><mo>=</mo><mi>i</mi><mi>m</mi><mi>a</mi><mi>g</mi><mi>e</mi><mi>c</mi><mi>r</mi><mi>e</mi><mi>a</mi><mi>t</mi><mi>e</mi><mi>f</mi><mi>r</mi><mi>o</mi><mi>m</mi><mi>p</mi><mi>n</mi><mi>g</mi><mo stretchy="false">(</mo></mrow><annotation encoding="application/x-tex">im = imagecreatefrompng(</annotation></semantics></math>im=imagecreatefrompng(filename);// Flip it horizontally imageflip($im, IMG_FLIP_HORIZONTAL);// Output imagejpeg($im); imagedestroy($im); ?>

The above example will output something similar to: