About one and a half year ago, i published a blog post about adding text to image in PHP.
PHP – Add Text on an Image

The above example only display the image in browser, but it would not save the image on the server. Today i would like to show you another example which could save the image with text added on server.

What you need is 3 files.

• index.php
• kenshin.jpg (The image which you wanna add text on it)
• arial.ttf (Or any other .ttf font file)

So here is the kenshin.jpg.

 

And this is the index.php.

<?php
$image_filepath = './kenshin.jpg';
saveImageWithText("Welcome to Eureka!", $color, $image_filepath);

function saveImageWithText($text, $color, $source_file) { 
  
  $public_file_path = '.';
  
  // Copy and resample the imag
  list($width, $height) = getimagesize($source_file);
  $image_p = imagecreatetruecolor($width, $height);
  $image = imagecreatefromjpeg($source_file);
  imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width, $height); 
  
  // Prepare font size and colors
  $text_color = imagecolorallocate($image_p, 0, 0, 0);
  $bg_color = imagecolorallocate($image_p, 255, 255, 255);
  $font = $public_file_path . '/arial.ttf';
  $font_size = 12; 
  
  // Set the offset x and y for the text position
  $offset_x = 0;
  $offset_y = 20;
  
  // Get the size of the text area
  $dims = imagettfbbox($font_size, 0, $font, $text);
  $text_width = $dims[4] - $dims[6] + $offset_x;
  $text_height = $dims[3] - $dims[5] + $offset_y;
  
  // Add text background
  imagefilledrectangle($image_p, 0, 0, $text_width, $text_height, $bg_color);
  
  // Add text
  imagettftext($image_p, $font_size, 0, $offset_x, $offset_y, $text_color, $font, $text);
  
  // Save the picture
  imagejpeg($image_p, $public_file_path . '/output.jpg', 100); 

  // Clear
  imagedestroy($image); 
  imagedestroy($image_p); 
}; 

In the webroot folder, put all the files inside.

 

Browse the link in browser and check the folder again.

 

So this is the output.jpg.

The above example also works with other image formats. For .png, update the following functions in index.php.

• imagecreatefromjpeg() to imagecreatefrompng()
• imagejpeg() to imagepng()

Done =)

Reference:

• PHP Jabbers – Put watermark on images using PHP
• PHP Freaks – PHP Add Text To Image