PHP | Gmagick clear() Function

The Gmagick::clear() function is an inbuilt function in PHP which is used to clear all resources associated to Gmagick object.

Syntax:

Gmagick Gmagick::clear( void )

 
Parameters: This function does not accepts any parameter.



Return Value: This function returns the cleared Gmagick object.

Errors/Exceptions: This function throws GmagickException on error.

Below programs illustrate the Gmagick::clear() function in PHP:

Program 1:

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code

<?php 
     
// Create a GmagickDraw object 
$draw = new GmagickDraw(); 
    
// Create GmagickPixel object 
$fillColor = new GmagickPixel('Green'); 
    
// Set stroke opacity
$draw->setfillcolor('red');
  
// Set the width and height of image 
$draw->setStrokeWidth(7); 
$draw->setFontSize(72); 
     
// Function to draw circle  
$draw->circle(250, 250, 100, 150); 
   
$gmagick = new Gmagick(); 
$gmagick->newImage(500, 500, 'White'); 
$gmagick->setImageFormat("png"); 
$gmagick->drawImage($draw); 
  
// Using clear() function
print_r($gmagick->clear());
?> 

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Output:

1

Program 2:

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<?php 
      
// Create a GmagickDraw object 
$draw = new ImagickDraw();  
     
// Set the color
$draw->setFillColor('Green'); 
     
// Set the width and height of image 
$draw->setStrokeWidth(17); 
   
// Function to draw line
for($x = 0; $x < 40; $x++) {
    $draw->line(rand(0, 100), rand(0, 60), rand(0, 500), rand(0, 500));
    $draw->line(rand(0, 100), rand(0, 60), rand(0, 500), rand(0, 500));
    $draw->line(rand(0, 100), rand(0, 60), rand(0, 500), rand(0, 500));
    $draw->line(rand(0, 100), rand(0, 60), rand(0, 500), rand(0, 500));
}
  
$gmagick = new Imagick(); 
$gmagick->newImage(500, 500, 'White'); 
$gmagick->setImageFormat("png"); 
   
// Set the color
$draw->setFillColor('Black'); 
   
// Set Font Size
$draw->setFontSize(20); 
   
// Use of drawimage function
$gmagick->drawImage($draw); 
  
$gmagick->annotateImage($draw, 5, 220, 0, 
     'Stroke Width using getstrokewidth() function :'
                        . $draw->getstrokewidth());
   
// Using clear() function
print_r($gmagick->clear());
?> 

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Output:

1

Reference: http://php.net/manual/en/gmagick.clear.php



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