PHP Gmagick getimagesignature()用法及代碼示例

<?php 
  
// PHP program to illustrate getimagesignature() function 
$image = new Gmagick( 
"https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-15.png"); 
  
// Using getimagesignature() function 
$pixels = $image->getimagesignature(); 
  
print($pixels); 
?>

<?php  
  
$string = "Computer Science portal for Geeks!";  
  
// Creating new image of above String  
// and add color 
$im = new Gmagick();  
$draw = new GmagickDraw();  
  
// Fill the color in image  
$draw->setFillColor(new GmagickPixel('green'));  
  
// Set the text font size  
$draw->setFontSize(50);  
  
$metrix = $im->queryFontMetrics($draw, $string);  
$draw->annotation(0, 40, $string);  
$im->newImage($metrix['textWidth'], $metrix['textHeight'],  
        new GmagickPixel('white'));  
  
// Draw the image          
$im->drawImage($draw);  
$im->setImageFormat('jpeg');  
  
// Using getimagesignature function 
$pixels = $im->getimagesignature(); 
  
print($pixels); 
?>