PHP generates text and image watermarks

One 、 Material preparation

A computer , A picture , A font library , Oh

Where can I find the font library ？C disc ——Fonts Folder

Just search Microsoft YaHei

Two 、 Code implementation

<?php

// Configure picture information 
$src="cat.jpg";

// Get picture information 
$info=getimagesize($src);

// Get the type of picture by the number of the image 
$type=image_type_to_extension($info[2],false);   //.jpeg   If you don't want to point   Just false fall 

// Create an image in memory that is the same as our image type 
$fun="imagecreatefrom{$type}";
$image=$fun($src);

// Set the path of the font 
$font="msyhbd.ttc";

// Fill in our watermark 
$content=" I love you China ";

// Set the color and transparency of the font 
$col=imagecolorallocatealpha($image,255,255,255,50);

// Write words 
imagettftext($image,20,0,20,30,$col,$font,$content);

// Browser output 
header('Content-type:'.$info['mime']);
$func = "image{$type}";
$func($image);

// Save the picture 
$func($image,'save.'.$type);

// Destroy picture 
imagedestroy($image);

?>

3、 ... and 、 Run locally