cloneable prompt Trying to clone an uncloneable object of class Imagic solution

Use a program circulated on the Internet to convert pdf screenshots into png, and you need to use the Imagic extension. After installation under Windows, the prompt is:
Fatal error: Trying to clone an uncloneable object of class Imagick in C:wwwhxpdf_to_png.php on line 17
This prompt will appear when using IIS and Apache. After many tests, two solutions were found:
1.php.ini; Enable compatibility mode with Zend Engine 1 (PHP 4.x)
zend.ze1_compatibility_mode = Off
The default is On, after changing it to Off, that is Can be solved.
2. Use imagick::... to call.
That is, $im->setResolution(120, 120); can be rewritten as:
imagick::setResolution(120, 120);
If this kind of error occurs in other extensions, these two methods can generally be used to solve it.
Attached is the program code snippet for converting pdf to png:

Copy the code The code is as follows:

function pdf2png($pdf, $filename, $page=0) {
if (!extension_loaded('imagick')) {
exit('no imagick');
return false;
}
if (!file_exists($pdf)) {
return false;
}
$im = new Imagick();
$im->setResolution( 120, 120);
$im->setCompressionQuality(100);
$im->readImage($pdf . "[" . $page . "]");
$im->setImageFormat('png' );
$im->writeImage($filename);
$im->readImage($filename);
$im->resizeImage(120, 150, Imagick::FILTER_LANCZOS, 1);
$im- >writeImage($filename);
return $filename;
}

The above has introduced the solution to the cloneable prompt Trying to clone an uncloneable object of class Imagic, including the cloneable content. I hope it will be helpful to friends who are interested in PHP tutorials.