PHP | ImagickDraw comment() Function

The ImagickDraw::comment() function is an inbuilt function in PHP which is used to add a comment to a vector output stream. The comment is appended at the end of the output stream.

Syntax:

bool ImagickDraw::comment( string $comment )

Parameters: This function accept a single parameter $comment which holds the comment.

Return Value: This function returns TRUE on success.

Exceptions: This function throws ImagickException on error.



Below given program illustrates the ImagickDraw::comment() function in PHP:

Program 1:

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<?php
  
//Create a new Imagick object
$imagick = new Imagick();
  
// Create a image on imagick object
$imagick->newImage(800, 250, 'white');
  
// Create a new ImagickDraw object
$draw = new ImagickDraw();
  
// Add comment
$draw->comment('Hello ! This is my comment.');
  
// Get the vector graphics as string
$graphics = $draw->getVectorGraphics();
  
// Get comment from vector graphics
$comment = substr($graphics, 807); 
echo $comment;
?>

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Output:

Hello ! This is my comment.

Program 2:

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<?php
  
//Create a new Imagick object
$imagick = new Imagick();
  
// Create a image on imagick object
$imagick->newImage(800, 250, 'white');
  
// Create a new ImagickDraw object
$draw = new ImagickDraw();
  
$string = 'This is my comment';
  
// Add comment
$draw->comment($string);
  
// Get the vector graphics
$graphics = $draw->getVectorGraphics();
  
// Get comment from vector graphics
$getComment = substr($graphics, 807, strlen($string));
  
// Set the font size
$draw->setFontSize(50);
  
// Write on image
$draw->annotation(50, 100, $getComment);
  
// Render the draw commands
$imagick->drawImage($draw);
  
// Show the output
$imagick->setImageFormat('png');
header("Content-Type: image/png");
echo $imagick->getImageBlob();
?>

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Output:

Reference: https://www.php.net/manual/en/imagickdraw.comment.php




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