php使用Image Magick將PDF文件轉(zhuǎn)換為JPG文件的方法

    這是一個(gè)非常簡(jiǎn)單的格式轉(zhuǎn)換代碼，可以把.PDF文件轉(zhuǎn)換為.JPG文件，代碼要起作用，服務(wù)器必須要安裝Image Magick 擴(kuò)展。
    $pdf_file = './pdf/demo.pdf';
    $save_to = './jpg/demo.jpg';
    //make sure that apache has permissions to write in this folder!
    //(common problem)
    //execute ImageMagick command 'convert' and convert PDF
    //to JPG with applied settings
    exec('convert "'.$pdf_file.'" -colorspace RGB -resize 800 "'.$save_to.'"', $output, $return_var);
    if($return_var == 0) {
    //if exec successfuly converted pdf to jpg
    print "Conversion OK";
    }
    else print "Conversion failed.".$output;