Problems and solutions encountered when using php to dynamically generate gif_PHP tutorial

Solution: Use php4.05

That’s when I discovered that it was a problem written in the book. php_gd.dll could not support generating gif at all. After being guided by an expert, I found out that my version was php4.04 for win32. php_gd_gif.dll is missing, so I downloaded a higher version of php4.05, which contains php_gd_gif.dll that supports generating dynamic gifs.

Question 3: A warning appears: Warning: Function registration failed - duplicate name - imagearc in d:apachehtdocsgif2.php3 on line 3

The procedure is as follows:

dl("php_gd_gif.dll");
header("content-type:image/gif");

$im = imagecreate(400,30);
$black = imagecolorallocate($im,0,0,0);
$white = imagecolorallocate($im,255,255,255);
imageline( $im,200,15,215,15,$white);
imagestring($im, 5, 4, 10, "This is a Gif", $white);

imagegif($im);
imagedestroy($im);

?>

Solution: Modify the program or php.ini

The dl() function is used to load dll, but if the ";" in front of the required dll has been removed in the php.ini file , then do not use this function at this time.
If the ";" before extension=php_gd_gif.dll in the ini file is not removed, then dl("php_gd_gif.dll"); must be used to load it. In short: the two are different from each other, otherwise the server will think it is a duplicate name.