Write PHP Code in HTML File

Here is the way to write the PHP logic in HTML File(i.e .html file).

In two ways we can achieve this.

1.change the setting in apache configuration file(i.e httpd.conf)

AddType application/x-httpd-php .php ---> AddType application/x-httpd-php .php .html

2. If you don't have the access to httpd.conf you can write .htacees file as

AddType application/x-httpd-php .php .htm .html

and then restart the apache webserver.

prototype.js / jQuery.js conflict and resolution

when you use jQuery and prototype javascript frameworks togather on the same page, it creates conflicts.

jQuery has provided a resolution to this conflict. The resolution goes as below:

verriding the $-function:

1) you can override that default by calling jQuery.noConflict() at any point after jQuery and the other library have both loaded. For example:



<script src="prototype.js">
</script>
<script src="jquery.js">
</script>
<script>
     jQuery.noConflict();

     // Use jQuery via jQuery(...)
     jQuery(document).ready(function(){
       jQuery("div").hide();
     });

     // Use Prototype with $(...), etc.
     $('someid').hide();
   
</script>






2) Additionally, there's another option. If you want to make sure that
jQuery won't conflict with another library - but you want the benefit
of a short name, you could do something like this:



<script src="prototype.js">
</script>
<script src="jquery.js">
</script>
<script>
     var $j = jQuery.noConflict();

     // Use jQuery via $j(...)
     $j(document).ready(function(){
       $j("div").hide();
     });

     // Use Prototype with $(...), etc.
     $('someid').hide();
   
</script>

PHP : Convert PDF Image file to JPEG Using Image magick

For this you need to  insatll Ghostscript first, you can download Ghostscript from here.

< ?php

define('THUMB_WIDTH', 150);
define('THUMB_HEIGHT', 212);


function makeThumbnail($in, $out) {
    $width = THUMB_WIDTH;
    $height = THUMB_HEIGHT;
    $identify = shell_exec("identify -verbose ".$in);
                $matches = array();
                $pattern = '/Geometry: ([0-9]{1,})x([0-9]{1,})/';
        $result = preg_match($pattern, $identify, $matches);
        if( $result && count($matches) ) {
            $h = $matches[1];
            $w =  $matches[2];

        }

    $thumbRatio = $width/$height;
    $inRatio = $w/$h;
    $isLandscape = $inRatio > $thumbRatio;

    $size = ($isLandscape ? '1000x'.$height : $width.'x1000');
    $xoff = ($isLandscape ? floor((($inRatio*$height)-$width)/2) : 0);
    $command = system("convert $in -resize $size -crop {$width}x{$height}+{$xoff}+0 ".
        "-colorspace RGB -strip -quality 90 $out");

//     exec($command);
//     echo $command;
}
$file = 'scan0001.pdf';
$out = 'scan0001_thumb.jpg';
makeThumbnail($file,$out);

? >

Getting Image magick working on XAMPP for Windows

 First you'd download the newest binary release of Image Magick from http://www.imagemagick.org/script/binary-releases.php#windows. The typical version you'd want to snag will end with Q16-windows-dll.exe. For example, the version I downloaded was ImageMagick-6.4.9-4-Q16-windows-dll.exe. Install Image Magick.

After that you need to download php_imagick_dyn-Q16.dll from here.
if you did not find any php_imagick.zip file just refresh once on above URL.

Once you have download   php_imagick_dyn-Q16.dll file put this in xampp/php/ext or php/extension folder.

Then open php.ini and add extension=php_imagick_dyn-Q16.dll.and comment extension=php_imagick.dll if it is already not commented .

And just restart your server.

Opening a file download dialog from a JavaScript function

< script type="text/javascipt" >
function startDownload()
{
var url='http://server/folder/file.ext';
window.open(url,'Download');
}
< /script >

hide JavaScript errors from the user

$(window).error(function(){
return true;
});

PHP File Download

// place this code inside a php file and call it f.e. "download.php"
$path = $_SERVER['DOCUMENT_ROOT']."/path2file/"; // change the path to fit your websites document structure
$fullPath = $path.$_GET['download_file'];

if ($fd = fopen ($fullPath, "r")) {
$fsize = filesize($fullPath);
$path_parts = pathinfo($fullPath);
$ext = strtolower($path_parts["extension"]);
switch ($ext) {
case "pdf":
header("Content-type: application/pdf"); // add here more headers for diff. extensions
header("Content-Disposition: attachment; filename=\"".$path_parts["basename"]."\""); // use 'attachment' to force a download
break;
default;
header("Content-type: application/octet-stream");
header("Content-Disposition: filename=\"".$path_parts["basename"]."\"");
}
header("Content-length: $fsize");
header("Cache-control: private"); //use this to open files directly
while(!feof($fd)) {
$buffer = fread($fd, 2048);
echo $buffer;
}
}
fclose ($fd);