imagecreatetruecolor( ) is an inbuilt function in PHP that is used to create a new true-color image. It returns a blank image of the given size.
Syntax
resource imagecreatetruecolor($width, $height)
Parameters
imagecreatetruecolor() takes two paramters, $width and $height.
$width − The $width parameter is used to set the image width.
$height − The $height parameter is used to set the image height.
Return Values
imagecreatetruecolor() returns an image resource identifier on success or it returns false on errors.
Example 1
<?php
// Set the vertices of polygon
$values = array(
150, 50, // Point 1 (x, y)
50, 250, // Point 2 (x, y)
250, 250 // Point 3 (x, y)
);
// Create the size of image or blank image
$image = imagecreatetruecolor(700, 350);
// Set the background color of image
$background_color = imagecolorallocate($image, 122, 122, 122);
// Fill background with above selected color
imagefill($image, 0, 0, $background_color);
// Allocate a color for the polygon
$image_color = imagecolorallocate($image, 0, 255, 255);
// Draw the polygon
imagepolygon($image, $values, 3, $image_color);
// Output the picture to the browser
header('Content-type: image/png');
imagepng($image);
?>Output
Example 2 − Below PHP code will create a new GD image stream
<?php
header ('Content-Type: image/gif');
$img = @imagecreatetruecolor(550, 220)
or die('Cannot Initialize new GD image stream');
$text_color = imagecolorallocate($img, 255, 255, 0);
imagestring($img, 10, 50, 50, 'A Simple PHP Example', $text_color);
imagepng($img);
imagedestroy($img);
?>Output
