Knowledge Base

create_random_image()

Description

Generate a random image which can be used during testing (e.g to upload, or create previews for)

- text -> Image content text
- filename (default: random)
- width (default: 150)
- height (default: 50)
- bg[red|green|blue] -> Background colour (RGB), e.g $info['bg']['red'] = 234;

Parameters

Column	Type	Default	Description
$info:	array
	$text_b;	get_temp_dir . DIRECTORY_SEPARATOR . "{$filename}.jpg"; if imagejpeg$img
$bg_r
$bg_g
5
20
15
$info['text']
imagecolorallocate$img
$text_r
$text_g
$path
70
$info	array		Set image parameters:

Return

array

Returns an "error" key if something went wrong, otherwise provides some useful info (e.g path)

Location

include/test_functions.php lines 35 to 66

Definition

 
function create_random_image(array $info): array
    {
    $width = $info['width'] ?? 150;
    $height = $info['height'] ?? 50;
    $filename = $info['filename'] ?? generateSecureKey(32);

    // Background colour
    $bg_r =  $info['bg']['red'] ?? mt_rand(0, 255);
    $bg_g = $info['bg']['green'] ?? mt_rand(0, 255);
    $bg_b = $info['bg']['blue'] ?? mt_rand(0, 255);

    // Text colour
    $text_r = $bg_r < 128 ? $bg_r + 100 : $bg_r - 100;
    $text_g = $bg_g < 128 ? $bg_g + 100 : $bg_g - 100;
    $text_b = $bg_b < 128 ? $bg_b + 100 : $bg_b - 100;

    // Generate image
    $img = imagecreate($width, $height);
    imagecolorallocate($img, $bg_r, $bg_g, $bg_b);
    imagestring($img, 5, 20, 15, $info['text'], imagecolorallocate($img, $text_r, $text_g, $text_b));
    $path = get_temp_dir() . DIRECTORY_SEPARATOR . "{$filename}.jpg";
    if (imagejpeg($img, $path, 70))
        {
        return [
            'path' => $path,
        ];
        }

    return [
        'error' => 'Failed to create image',
    ];
    }


This article was last updated 26th April 2024 21:35 Europe/London time based on the source file dated 4th April 2024 10:05 Europe/London time.