PHP | imagestringup() Function

The imagestringup() function is an inbuilt function in PHP which is used to draw a string vertically.

Syntax:

bool imagestringup( $image, $font, $x, $y, $string, $color )

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

• $image: The imagecreatetruecolor() function is used to create a blank image in a given size.
• $font: This parameter is used to set the font size. Inbuilt font in latin2 encoding can be 1, 2, 3, 4, 5 or other font identifiers registered with imageloadfont() function.
• $x: This parameter is used to hold the x-coordinate of the upper left corner.
• $y: This parameter is used to hold the y-coordinate of the upper left corner.
• $string: This parameter is used to hold the string to be written.
• $color: This parameter is used to hold the color of image.

Return Value: This function returns True on success or False on failure.

Below programs illustrate the imagestringup() function in PHP:

Program 1:

<?php

// Create a 400*300 image
$im = imagecreatetruecolor(400, 300);

// Set the background color of image
$background_color = imagecolorallocate($im,  0, 153, 0);

// Fill background with above selected color
imagefill($im, 0, 0, $background_color);

// Write the text
$textcolor = imagecolorallocate($im, 255, 255, 255);
imagestringup($im, 6, 195, 200, 'GeeksforGeeks', $textcolor);

// Output the picture to the browser
header('Content-type: image/png');

imagepng($im);
?>

Output:

Program 2:

<?php

// Create a 400*300 image
$im = imagecreatetruecolor(400, 300);

// Set the background color of image
$background_color = imagecolorallocate($im,  0xFF, 0xFF, 0xFF);

// Fill background with above selected color
imagefill($im, 0, 0, $background_color);

// Write the text
$textcolor = imagecolorallocate($im, 0, 153, 0);
imagestringup($im, 6, 195, 200, 'GeeksforGeeks', $textcolor);

// Output the picture to the browser
header('Content-type: image/png');

imagepng($im);
?>

Output:

Reference: http://php.net/manual/en/function.imagestringup.php