PHP | imagecreate() Function
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, "GeeksforGeeks", $text_color); imagestring($image, 3, 160, 120, "A computer science portal", $text_color); header("Content-Type: image/png"); imagepng($image); imagedestroy($image); ?> |
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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); ?> |
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Output:
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Reference: http://php.net/manual/en/function.imagecreate.php
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