max_allowed_packet = 10M
wait_timeout = 120

If you don’t have them- add them.
Then I restarted MySQL server. On linux you can try this command:

/etc/init.d/mysql restart

And your MySQL should be ready to import now.

-moz-transform:    rotate(15deg); /* Firefox */
-o-transform:      rotate(15deg); /* Opera */
-webkit-transform: rotate(15deg); /*Safari+Chrome */
transform:         rotate(15deg); /* IE9 and others */

Unfortunatelly for IE7 and IE8 we need different code. If we want to rotate by 90, 180, 270 or 360 degrees we can use this:

filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=0); /* 0* */
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=1); /* 90* */
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=2); /* 180* */
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3); /* 270 * */

But if want to rotate by arbitraty value then we need to use some complex calculations using matrices. Here you can read more about them on MSDN. For 20* you need code like this:

/*IE */
-ms-filter: "progid:DXImageTransform.Microsoft.Matrix(M11=0.9659258262890683, M12=-0.2588190451025207, M21=0.2588190451025207, M22=0.9659258262890683, SizingMethod='auto expand')";
/* IE6 and 7 */
filter: progid:DXImageTransform.Microsoft.Matrix(
            M11=0.9659258262890683,
            M12=-0.2588190451025207,
            M21=0.2588190451025207,
            M22=0.9659258262890683,
            SizingMethod='auto expand');

However there is a very nice tool to calculated the params online.

Method 1
Let’s create a new unique index, like this:

ALTER IGNORE TABLE `mytab` ADD UNIQUE INDEX(`mycol`)

Method 2
Create a new table and copy content from old table to new one:

INSERT IGNORE INTO mytab2
SELECT * FROM mytab

HTML Parsing Error: Unable to modify the parent container element before the child element is closed (KB927917)

After playing around a bit I found out Internet Explorer had problems with Javascript. So I put all JS from <script> tag inside jQuery’s:

$(document).ready(function()
{
	//code here
});

And it helped. All other browsers (Opera, Firefox) did not need it, but IE is retarded and seems it can’t render content properly without it.

include 'zif.php';
include 'zif_one.php';

Now we read source PNG image and save as PNM:

$im = imagecreatefromfile('input.png');
imagepnm($im, 'input2.pnm');

Then we call GOCR command-line app to do the hard part- optical character recognition:

exec('gocr049 input2.pnm', $text);

The result is stored in $text as an array so we convert the array to a string- each line separated with ‘<br>’:

$text = implode('<br>', $text);

And finally- we display the result:

echo $text;

Of course the result is almost never perfect and the quality of GOCR output depends on quality of the source image used. The bigger resulution, the less noise- the better recognition. GOCR does support teaching mode so we can use it to improve results- just run GOCR manually with the params:

gocr049 -m 130 -p ./db/ input2.pnm

And when you want to recognize images using database you created when teaching GOCR- use:

gocr049 -p ./db/ input.pnm

/db/ is the path to our GOCR database.

The whole script:

include 'zif.php';
include 'zif_one.php';
$im = imagecreatefromfile('input.png');
imagepnm($im, 'input2.pnm');
exec('gocr049 input2.pnm', $text);
$text = implode('<br>', $text);
echo $text;

Or same thing zipped with gocr for Windows and test image:

 
You can get Ziin Image Library here
 
  
 

Unique file name

This function returns numerical name for a file with given extension in a given directory that does not exits. It can be used as a name for temporary files, like uploads and such. If you call it like uniqFile(‘upload’, ‘.jpg’) it will return something like ‘1.jpg’ or ‘15523.jpg’.

function uniqFile($dir, $ext)
{
	if (substr($dir, -1, 1) != '/')
	{
		$dir .= '/';
	}

	for ($i=1; $i<999999; $i++)
	{
		if (!is_file($dir . $i . $ext))
		{
			return $i . $ext;
		}
	}
	return false;
}

Human size

This functions returns human-readable size of the file. It’s only parameter is size in bytes. humanSize(1030) will return ‘1 kB’.

function humanSize($size)
{
	if ($size < 1024)			return sprintf('%d B', $size);
	if ($size < 1048576)		return sprintf('%.2f kB', $size/1024);
	if ($size < 1073741824)		return sprintf('%.2f MB', $size/1048576);
	if ($size < 1099511627776)	return sprintf('%.2f GB', $size/1073741824);
}

To Title

Converts letter case of a given string- every word’s first letter becomes uppercase.

function toTitle($title)
{
	return ucwords(strtolower($title));
}

Hex to String, String to Hex

These functions convert given hex string into binary string.

function hex2str($s)
{
	$s = str_replace(' ', '', $s);
	$len = strlen($s);
	$out = '';
	for ($i=0; $i<$len; $i+=2)
	{
		$out .= chr(hexdec(substr($s, $i, 2)));
	}
	return $out;
}

function str2hex($s)
{
	$len = strlen($s);
	$out = '';
	for ($i=0; $i<$len; $i++)
	{
		$out .= dechex(ord($s[$i])) . ' ';
	}
	return $out;
}

.htaccess: Invalid command 'RewriteEngine', perhaps misspelled or defined by a module not included in the server configuration

It appeared that module mod_rewrite was not enabled in Apache. After I enabled it- the error was gone and website started working.
To enable the module edit apache’s httpd.conf file and make sure this line is there uncommented:

LoadModule rewrite_module modules/mod_rewrite.so

php_value upload_max_filesize “1.99G”
php_value post_max_size “1.99G”

and then I got this strange error:

PHP Warning: POST Content-Length of 1649460972 bytes exceeds the limit of 1073741824 bytes in Unknown on line 0

while trying to upload 1.53 GB file. But why the error said I exceeded 1GB limit?
After doing some debugging I found out PHP does not like “1.99G” notation. So I changed it to:

php_value upload_max_filesize 2136746229
php_value post_max_size 2136746229

and everything started to work.
And why 1.99G and not 2GB or more? When you set 2GB then 32bit versions of PHP will understand this as a negative number and you won’t be able to upload anything. That’s why 1.99GB is a safe choice.

Also- what about memory_limit? I have read it many times on the net that this value should be as big as the upload_max_filesize. Well- it doesn’t. I have made it equal to 64MB and I can successfully upload even 1.53 GB files.

And if you want to upload files bigger than 2GB then either try 64bit PHP or use CGI/Perl/Python upload script.