check and uncheck the all checkbox using javascript

/**
pass the checkbox_name array
**/
function checkAll(form_object, checkbox_name)
{
for(var i=0; i < form_object[checkbox_name].length; i++)
{
form_object[checkbox_name][i].checked = true;
}
}

function uncheckAll(form_object, checkbox_name)
{
for(var i=0; i < form_object[checkbox_name].length; i++){

form_object[checkbox_name][i].checked = false;

}
}

Convert video file to .flv format

xec("ffmpeg -i '/home/tut2pr8c/public_html/videos/$video_file' -ar 22050 -ab 32 -f flv -y -s 400x320 /home/tut2pr8c/public_html/video_flv/$new_video_file_name");
exec("ffmpeg -i '/home/tut2pr8c/public_html/videos/$video_file' -ar 22050 -ab 32 -f flv -y -s 400x320 /home/tut2pr8c/public_html/video_flv/$new_video_file_name");

Find browser using PHP

public function getBrowserType(){

$sUserBrowserAgent = '';

if (ereg('OPERA(/| )([0-9].[0-9]{1,2})', strtoupper($_SERVER["HTTP_USER_AGENT"]), $log_version)) {
$sUserBrowserAgent = 'OPERA';
} else if (ereg('MSIE ([0-9].[0-9]{1,2})', strtoupper($_SERVER["HTTP_USER_AGENT"]), $log_version)) {
$sUserBrowserAgent = 'IE';
} else if (ereg('OMNIWEB/([0-9].[0-9]{1,2})', strtoupper($_SERVER["HTTP_USER_AGENT"]), $log_version)) {
$sUserBrowserAgent = 'OMNIWEB';
} else if (ereg('MOZILLA/([0-9].[0-9]{1,2})', strtoupper($_SERVER["HTTP_USER_AGENT"]), $log_version)) {
$sUserBrowserAgent = 'MOZILLA';
} else if (ereg('KONQUEROR/([0-9].[0-9]{1,2})', strtoupper($_SERVER["HTTP_USER_AGENT"]), $log_version)) {
$sUserBrowserAgent = 'KONQUEROR';
} else {
$sUserBrowserAgent = 'OTHER';
}

return $sUserBrowserAgent;

}

MYSQL - LEFT JOIN query

SELECT U.username, U.user_id, SR.section_id, U.access, count( DISTINCT SR.section_id ) AS section_count
FROM `users` U
LEFT JOIN `survey_replies` SR ON ( U.user_id = SR.user_id )
WHERE U.access >1
GROUP BY U.user_id
ORDER BY SR.section_id

Regular expression to remove the file name from the SERVER vairables

$sScriptPath = preg_replace("@/(\w){1,}.php(\w)?$@","",$_SERVER['SCRIPT_NAME']);
$sActionPage = "https://".$_SERVER['HTTP_HOST'].$sScriptPath."/member.php?action=add"

Embed media player in HTML page

Javscript Date comparison with current date

var d=new Date();
var form_date = "01-08-2009";
var split_date = form_date.split("-");
var added_timestamp = Number(d.setMonth(split_date[0]-1,split_date[1]));
var form_date = parseInt(split_date[0])+"/"+parseInt(split_date[1])+"/"+parseInt(split_date[2])+" "+d.getHours()+":"+d.getMinutes()+":"+d.getSeconds();


var timestamp = Number(new Date());
if(form_date < timestamp){
alert(Please select the date greater than the current date!);

}