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PHP | imageflip() Function

The imageflip() function is an inbuilt function in PHP which is used to Flip an image horizontally, vertically or both horizontally and vertically using the given mode.

Syntax:

bool imageflip( $image, $mode )

Parameters: This function accepts two parameters as mentioned above and described below:

  • $image: The imagecreatetruecolor() function is used to create a blank image in a given size.
  • $mode: This parameter is used to hold the Flip mode of image. This can be one of the IMG_FLIP_* constants:
    • 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 Value: This function returns TRUE on success or FALSE on failure.

Below programs illustrate the imageflip() function in PHP.



Note: The image given below is used in the following program.

Program 1:

<?php
  
// Assign image file in variable.
$image_name = 'geeks.png';
   
// Load image file
$image = imagecreatefrompng($image_name);
   
// Flip the image vertically
imageflip($image, IMG_FLIP_VERTICAL);
  
// Content type
header('Content-type: image/png');
   
// Output
imagejpeg($image);
?>

Output:
image flip

Program 2:

<?php
  
// Assign image file to variable
$image_name = 'geeks.png';
   
// Load image file
$image = imagecreatefrompng($image_name);
   
// Flip the image horizontally
imageflip($image, IMG_FLIP_HORIZONTAL);
  
// Content type
header('Content-type: image/png');
   
// Output
imagejpeg($image);
?>

Output:
flip image

Program 3:

<?php
  
// Assign image file to variable
$image_name = 'geeks.png';
   
// Load image file
$image = imagecreatefrompng($image_name);
   
// Flip the image file both horizontally
// and vertically.
imageflip($image, IMG_FLIP_BOTH);
  
// Content type
header('Content-type: image/png');
   
// Output
imagejpeg($image);
?>

Output:
image flip

Related Articles:

Reference: http://php.net/manual/en/function.imageflip.php



This article is attributed to GeeksforGeeks.org

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