PHP | imagecreate() Function

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The imagecreate() function is an inbuilt function in PHP which is used to create a new image. This function returns the blank image of given size. In general imagecreatetruecolor() function is used instead of imagecreate() function because imagecreatetruecolor() function creates high quality images.

Syntax:

imagecreate( $width, $height )

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

$width: It is mandatory parameter which is used to specify the image width.
$height: It is mandatory parameter which is used to specify the image height.

Return Value: This function returns an image resource identifier on success, FALSE on errors.

Below programs illustrate the imagecreate() function in PHP:

Program 1:

<?php 
  
// Create the size of image or blank image 
$image = imagecreate(500, 300); 
  
// Set the background color of image 
$background_color = imagecolorallocate($image, 0, 153, 0); 
  
// Set the text color of image 
$text_color = imagecolorallocate($image, 255, 255, 255); 
  
// Function to create image which contains string. 
imagestring($image, 5, 180, 100,  "zambiatek", $text_color); 
imagestring($image, 3, 160, 120,  "A computer science portal", $text_color); 
  
header("Content-Type: image/png"); 
  
imagepng($image); 
imagedestroy($image); 
  
?> 

Output:

Program 2:

<?php 
  
// Create the size of image or blank image 
$image = imagecreate(500, 300); 
  
// Set the vertices of polygon 
$values = array( 
            50,  50,  // Point 1 (x, y) 
            50, 250,  // Point 2 (x, y) 
            250, 50,  // Point 3 (x, y) 
            250,  250 // Point 3 (x, y) 
        ); 
// Set the background color of image 
$background_color = imagecolorallocate($image,  0, 153, 0); 
     
// Fill background with above selected color 
imagefill($image, 0, 0, $background_color); 
   
// Allocate a color for the polygon 
$image_color = imagecolorallocate($image, 255, 255, 255); 
     
// Draw the polygon 
imagepolygon($image, $values, 4, $image_color); 
     
// Output the picture to the browser 
header('Content-type: image/png'); 
     
imagepng($image); 
?> 