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, it prompts:
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, changing it to Off will solve the problem.
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, it is generally OK. Solved using these two methods.
Attached is the program code snippet for converting pdf to png:
Copy the codeThe 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;
}
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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, it prompts: Fatal error: Trying to clone an uncloneable object of class Im...
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