PHP | Imagick resizeImage() Function

PHP | Imagick previewImages() Function

Last Updated : 16 Aug, 2024

The Imagick::previewImages() function is an inbuilt function in PHP which is used to quickly pin-point appropriate parameters for image processing. It tiles 9 thumbnails of the specified image with an image processing operation applied at varying strengths.

Syntax:

bool Imagick::previewImages( int $preview )

Parameters: This function accepts single parameter $preview which holds the preview type constants. Click here to get the list of preview type constants.

Return Value: This function returns TRUE on success and FALSE on Error or Failure.

Errors/Exceptions: It throws ImagickException while error occurred.

Below program illustrates the Imagick::previewImages() function in PHP:

Program:

php

<?php  
  
// Store the image source into variable 
$imagePath = 
"https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-9.png"; 
  
// Create new Imagick object 
$imagick = new \Imagick($imagePath); 
  
// Use previewImages() function 
$imagick->previewImages(imagick::PREVIEW_EDGEDETECT); 
  
header("Content-Type: image/png"); 
  
// Display output image 
echo $imagick->getImageBlob(); 
  
?> 

Output:

Reference: https://www.php.net/manual/en/imagick.previewimages.php

PHP | Imagick resizeImage() Function

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