How can we check whether an image is loaded fully or
partially using javascript. It is possible
See the Example Below.

function IsImageOk(img) {
// During the onload event, IE correctly identifies
any images that
// weren’t downloaded as not complete. Others should too. Gecko-based
// browsers act like NS4 in that they report this incorrectly.
if (!img.complete) {
return false;
}

// However, they do have two very useful properties:
naturalWidth and
// naturalHeight. These give the true size of the image. If it failed
// to load, either of these should be zero.
if (typeof img.naturalWidth
!= “undefined” && img.naturalWidth
== 0) {
return false;
}

// No other way of checking: assume it’s ok.
return true;
}

//Call this function onLoad of body tag
function checkImages() {
for (var i = 0; i < document.images.length; i++) {
if (!IsImageOk(document.images[i])) {

document.images[i].src = “/images/loaderror.jpg“;
}
}
}

IE (Internet Explorer) Form Tag problem

Most of the desingners of html , perhaps faced this problem, that when use
form tag, extra white space or page break appear. This is most in the case of
using form tag outside a table or a td tag. There is no problem for the same
condition in mozilla. You know what to do.

We can solve this simply using CSS. Just add this

<style>
form {
margin:0;
padding:0;
}
</style>

This will solve your problem

Hello,

Javascript supports different types of OOPS concept. You know basically javascript
is a functional lanugage.
We can make these function to classes and objects as follows:

<input type=”button” name=”man1_butt”
id=”man1_butt” onClick=”man1.get_name(); man1.get_age();”
value=”Man 1″>
<input type=”button” name=”man2_butt” id=”man2_butt”
onClick=”man2.get_name(); man2.get_age();” value=”Man 2″>

We can implement inheritance also using javascript. See below the example:

Click Read more for example

Read More »

In normal desktop applications , we use exception handling everywhere in our
code.
But in server side script such as php, we can limit the usage of Exception handling.

Example for raising an exception in php

<?php

//create function with an exception

function checkValue($number)
{

if($number>4)
throw new
Exception(”Value must be 4 or below“);

return true

}

//trigger exception
checkValue(5);

?>

The above code will give : Fatal error: Uncaught exception ‘Exception’

If we call like this:

<?php

try{

checkValue(5);

}

catch(Exception $e)

{
echo ‘Message: ‘ .$e->getMessage();

}

?>

The code above will get an error like this:

Message: Value must be 4 or below

In many cases, we , php programmers need Roman number display I II III IV etc.

Here is a simple algorithm for that .

 1000, ‘CM’ => 900, ‘D’ => 500, ‘CD’ => 400,
     ‘C’ => 100, ‘XC’ => 90, ‘L’ => 50, ‘XL’ => 40,
     ‘X’ => 10, ‘IX’ => 9, ‘V’ => 5, ‘IV’ => 4, ‘I’ => 1);

      foreach ($lookup as $roman => $value)
     {
            // Determine the number of matches
             $matches = intval($n / $value);

             // Store that many characters
            $result .= str_repeat($roman, $matches);

            // Substract that from the number
            $n = $n % $value;
      }

      // The Roman numeral should be built, return it
      return $result;
}

?>

Hello friends,

If you have a smpp account you can simple send sms / unicode to any number using php. It is very simple .

Sample code is:

require_once('smppclass.php');

$smpphost = "203.199.142.41"; // your host address
$smppport = 2345;
$systemid = "idsfds"; // Your system id
$password = "es223"; // Your smpp account password
$system_type = "Rdsd "; // Your userid
$from = "919846341106"; // From number

$smpp = new SMPPClass();
$smpp->SetSender($from);
/* bind to smpp server */
$smpp->Start($smpphost, $smppport, $systemid, $password, $system_type);
/* send enquire link PDU to smpp server */
$smpp->TestLink();
/* send single message; large messages are automatically split */
$smpp->Send("971532663061", "This is a test message. Give me a missed call if you get this. sajith");
/* send unicode message */
//$smpp->Send("31648072766", "صباحالخير", true);
/* send message to multiple recipients at once */
//$smpp->SendMulti("31648072766,31651931985", "This is my PHP message");
/* unbind from smpp server */
$smpp->End();

//Click read more for smppclass.php  library

More...

//file smppclass.php

define(CM_BIND_TRANSMITTER, 0x00000002);
define(CM_SUBMIT_SM, 0x00000004);
define(CM_SUBMIT_MULTI, 0x00000021);
define(CM_UNBIND, 0x00000006);
define(CM_ENQUIRELINK, 0x00000015);

class SMPPClass {
// public members:
/*
Constructor.
Parameters:
none.
Example:
$smpp = new SMPPClass();
*/
function SMPPClass()
{
/* seed random generator */
list($usec, $sec) = explode(' ', microtime());
$seed = (float) $sec + ((float) $usec * 100000);
srand($seed);

/* initialize member variables */
$this->_debug = true; /* set this to false if you want to suppress debug output. */
$this->_socket = NULL;
$this->_command_status = 0;
$this->_sequence_number = 1;
$this->_source_address = "";
$this->_message_sequence = rand(1,255);
}

/*
For SMS gateways that support sender-ID branding, the method
can be used to set the originating address.
Parameters:
$from    :    Originating address
Example:
$smpp->SetSender("31495595392");
*/
function SetSender($from)
{
if (strlen($from) > 20) {
$this->debug("Error: sender id too long.\n");
return;
}
$this->_source_address = $from;
}

/*
This method initiates an SMPP session.
It is to be called BEFORE using the Send() method.
Parameters:
$host        : SMPP ip to connect to.
$port        : port # to connect to.
$username    : SMPP system ID
$password    : SMPP passord.
$system_type    : SMPP System type
Returns:
true if successful, otherwise false
Example:
$smpp->Start("smpp.chimit.nl", 2345, "chimit", "my_password", "client01");
*/
function Start($host, $port, $username, $password, $system_type)
{
/*
$testarr = stream_get_transports();
$have_tcp = false;
reset($testarr);
while (list(, $transport) = each($testarr)) {
if ($transport == "tcpp") {
$have_tcp = true;
}
}
if (!$have_tcp) {
$this->debug("No TCP support in this version of PHP.\n");
return false;
}
*/
$this->_socket = fsockopen($host, $port, $errno, $errstr, 20);
// todo: sanity check on input parameters
if (!$this->_socket) {
$this->debug("Error opening SMPP session.\n");
$this->debug("Error was: $errstr.\n");
return;
}
socket_set_timeout($this->_socket, 1200);
$status = $this->SendBindTransmitter($username, $password, $system_type);
if ($status != 0) {
$this->debug("Error binding to SMPP server. Invalid credentials?\n");
}
return ($status == 0);
}

/*
This method sends out one SMS message.
Parameters:
$to    : destination address.
$text    : text of message to send.
$unicode: Optional. Indicates if input string is html encoded unicode.
Returns:
true if messages sent successfull, otherwise false.
Example:
$smpp->Send("31649072766", "This is an SMPP Test message.");
$smpp->Send("31648072766", "صباحالخير", true);
*/
function Send($to, $text, $unicode = false)
{
if (strlen($to) > 20) {
$this->debug("to-address too long.\n");
return;
}
if (!$this->_socket) {
$this->debug("Not connected, while trying to send SUBMIT_SM.\n");
// return;
}
$service_type = "";
//default source TON and NPI for international sender
$source_addr_ton = 1;
$source_addr_npi = 1;
$source_addr = $this->_source_address;
if (preg_match('/\D/', $source_addr)) //alphanumeric sender
{
$source_addr_ton = 5;
$source_addr_npi = 0;
}
elseif (strlen($source_addr) < 11) //national or shortcode sender
{
$source_addr_ton = 2;
$source_addr_npi = 1;
}
$dest_addr_ton = 1;
$dest_addr_npi = 1;
$destination_addr = $to;
$esm_class = 3;
$protocol_id = 0;
$priority_flag = 0;
$schedule_delivery_time = "";
$validity_period = "";
$registered_delivery_flag = 0;
$replace_if_present_flag = 0;
$data_coding = 241;
$sm_default_msg_id = 0;
if ($unicode) {
$text = mb_convert_encoding($text, "UCS-2BE", "HTML-ENTITIES"); /* UCS-2BE */
$data_coding = 8; /* UCS2 */
$multi = $this->split_message_unicode($text);
}
else {
$multi = $this->split_message($text);
}
$multiple = (count($multi) > 1);
if ($multiple) {
$esm_class += 0×00000040;
}
$result = true;
reset($multi);
while (list(, $part) = each($multi)) {
$short_message = $part;
$sm_length = strlen($short_message);
$status = $this->SendSubmitSM($service_type, $source_addr_ton, $source_addr_npi, $source_addr, $dest_addr_ton, $dest_addr_npi, $destination_addr, $esm_class, $protocol_id, $priority_flag, $schedule_delivery_time, $validity_period, $registered_delivery_flag, $replace_if_present_flag, $data_coding, $sm_default_msg_id, $sm_length, $short_message);
if ($status != 0) {
$this->debug(”SMPP server returned error $status.\n”);
$result = false;
}
}
return $result;
}

/*
This method ends a SMPP session.
Parameters:
none
Returns:
true if successful, otherwise false
Example: $smpp->End();
*/
function End()
{
if (!$this->_socket) {
// not connected
return;
}
$status = $this->SendUnbind();
if ($status != 0) {
$this->debug(”SMPP Server returned error $status.\n”);
}
fclose($this->_socket);
$this->_socket = NULL;
return ($status == 0);
}

/*
This method sends an enquire_link PDU to the server and waits for a response.
Parameters:
none
Returns:
true if successfull, otherwise false.
Example: $smpp->TestLink()
*/
function TestLink()
{
$pdu = “”;
$status = $this->SendPDU(CM_ENQUIRELINK, $pdu);
return ($status == 0);
}

/*
This method sends a single message to a comma separated list of phone numbers.
There is no limit to the number of messages to send.
Parameters:
$tolist        : comma seperated list of phone numbers
$text        : text of message to send
$unicode: Optional. Indicates if input string is html encoded unicode string.
Returns:
true if messages received by smpp server, otherwise false.
Example:
$smpp->SendMulti(”31777110204,31649072766,…,…”, “This is an SMPP Test message.”);
*/
function SendMulti($tolist, $text, $unicode = false)
{
if (!$this->_socket) {
$this->debug(”Not connected, while trying to send SUBMIT_MULTI.\n”);
// return;
}
$service_type = “”;
$source_addr = $this->_source_address;
//default source TON and NPI for international sender
$source_addr_ton = 1;
$source_addr_npi = 1;
$source_addr = $this->_source_address;
if (preg_match(’/\D/’, $source_addr)) //alphanumeric sender
{
$source_addr_ton = 5;
$source_addr_npi = 0;
}
elseif (strlen($source_addr) < 11) //national or shortcode sender
{
$source_addr_ton = 2;
$source_addr_npi = 1;
}
$dest_addr_ton = 1;
$dest_addr_npi = 1;
$destination_arr = explode(",", $tolist);
$esm_class = 3;
$protocol_id = 0;
$priority_flag = 0;
$schedule_delivery_time = "";
$validity_period = "";
$registered_delivery_flag = 0;
$replace_if_present_flag = 0;
$data_coding = 241;
$sm_default_msg_id = 0;
if ($unicode) {
$text = mb_convert_encoding($text, "UCS-2BE", "HTML-ENTITIES");
$data_coding = 8; /* UCS2 */
$multi = $this->split_message_unicode($text);
}
else {
$multi = $this->split_message($text);
}
$multiple = (count($multi) > 1);
if ($multiple) {
$esm_class += 0×00000040;
}
$result = true;
reset($multi);
while (list(, $part) = each($multi)) {
$short_message = $part;
$sm_length = strlen($short_message);
$status = $this->SendSubmitMulti($service_type, $source_addr_ton, $source_addr_npi, $source_addr, $dest_addr_ton, $dest_addr_npi, $destination_arr, $esm_class, $protocol_id, $priority_flag, $schedule_delivery_time, $validity_period, $registered_delivery_flag, $replace_if_present_flag, $data_coding, $sm_default_msg_id, $sm_length, $short_message);
if ($status != 0) {
$this->debug(”SMPP server returned error $status.\n”);
$result = false;
}
}
return $result;
}

// private members (not documented):

function ExpectPDU($our_sequence_number)
{
do {
$this->debug(”Trying to read PDU.\n”);
if (feof($this->_socket)) {
$this->debug(”Socket was closed.!!\n”);
}
$elength = fread($this->_socket, 4);
if (empty($elength)) {
$this->debug(”Connection lost.\n”);
return;
}
extract(unpack(”Nlength”, $elength));
$this->debug(”Reading PDU     : $length bytes.\n”);
$stream = fread($this->_socket, $length - 4);
$this->debug(”Stream len      : ” . strlen($stream) . “\n”);
extract(unpack(”Ncommand_id/Ncommand_status/Nsequence_number”, $stream));
$command_id &= 0×0fffffff;
$this->debug(”Command id      : $command_id.\n”);
$this->debug(”Command status  : $command_status.\n”);
$this->debug(”sequence_number : $sequence_number.\n”);
$pdu = substr($stream, 12);
switch ($command_id) {
case CM_BIND_TRANSMITTER:
$this->debug(”Got CM_BIND_TRANSMITTER_RESP.\n”);
$spec = “asystem_id”;
extract($this->unpack2($spec, $pdu));
$this->debug(”system id       : $system_id.\n”);
break;
case CM_UNBIND:
$this->debug(”Got CM_UNBIND_RESP.\n”);
break;
case CM_SUBMIT_SM:
$this->debug(”Got CM_SUBMIT_SM_RESP.\n”);
if ($command_status == 0) {
$spec = “amessage_id”;
extract($this->unpack2($spec, $pdu));
$this->debug(”message id      : $message_id.\n”);
}
break;
case CM_SUBMIT_MULTI:
$this->debug(”Got CM_SUBMIT_MULTI_RESP.\n”);
$spec = “amessage_id/cno_unsuccess/”;
extract($this->unpack2($spec, $pdu));
$this->debug(”message id      : $message_id.\n”);
$this->debug(”no_unsuccess    : $no_unsuccess.\n”);
break;
case CM_ENQUIRELINK:
$this->debug(”GOT CM_ENQUIRELINK_RESP.\n”);
break;
default:
$this->debug(”Got unknown SMPP pdu.\n”);
break;
}
$this->debug(”\nReceived PDU: “);
for ($i = 0; $i < strlen($stream); $i++) {
if (ord($stream[$i]) < 32) $this->debug(”(” . ord($stream[$i]) . “)”); else $this->debug($stream[$i]);
}
$this->debug(”\n”);
} while ($sequence_number != $our_sequence_number);
return $command_status;
}

function SendPDU($command_id, $pdu)
{
$length = strlen($pdu) + 16;
$header = pack(”NNNN”, $length, $command_id, $this->_command_status, $this->_sequence_number);
$this->debug(”Sending PDU, len == $length\n”);
$this->debug(”Sending PDU, header-len == ” . strlen($header) .  “\n”);
$this->debug(”Sending PDU, command_id == ” . $command_id  .  “\n”);
fwrite($this->_socket, $header . $pdu, $length);
$status = $this->ExpectPDU($this->_sequence_number);
$this->_sequence_number = $this->_sequence_number + 1;
return $status;
}

function SendBindTransmitter($system_id, $smpppassword, $system_type)
{
$system_id = $system_id . chr(0);
$system_id_len = strlen($system_id);
$smpppassword = $smpppassword . chr(0);
$smpppassword_len = strlen($smpppassword);
$system_type = $system_type . chr(0);
$system_type_len = strlen($system_type);
$pdu = pack(”a{$system_id_len}a{$smpppassword_len}a{$system_type_len}CCCa1″, $system_id, $smpppassword, $system_type, 0×33, 0, 0, chr(0));
$this->debug(”Bind Transmitter PDU: “);
for ($i = 0; $i < strlen($pdu); $i++) {
$this->debug(ord($pdu[$i]) . ” “);
}
$this->debug(”\n”);
$status = $this->SendPDU(CM_BIND_TRANSMITTER, $pdu);
return $status;
}

function SendUnbind()
{
$pdu = “”;
$status = $this->SendPDU(CM_UNBIND, $pdu);
return $status;
}

function SendSubmitSM($service_type, $source_addr_ton, $source_addr_npi, $source_addr, $dest_addr_ton, $dest_addr_npi, $destination_addr, $esm_class, $protocol_id, $priority_flag, $schedule_delivery_time, $validity_period, $registered_delivery_flag, $replace_if_present_flag, $data_coding, $sm_default_msg_id, $sm_length, $short_message)
{
$service_type = $service_type . chr(0);
$service_type_len = strlen($service_type);
$source_addr = $source_addr . chr(0);
$source_addr_len = strlen($source_addr);
$destination_addr = $destination_addr . chr(0);
$destination_addr_len = strlen($destination_addr);
$schedule_delivery_time = $schedule_delivery_time . chr(0);
$schedule_delivery_time_len = strlen($schedule_delivery_time);
$validity_period = $validity_period . chr(0);
$validity_period_len = strlen($validity_period);
// $short_message = $short_message . chr(0);
$message_len = $sm_length;
$spec = “a{$service_type_len}cca{$source_addr_len}cca{$destination_addr_len}ccca{$schedule_delivery_time_len}a{$validity_period_len}ccccca{$message_len}”;
$this->debug(”PDU spec: $spec.\n”);

$pdu = pack($spec,
$service_type,
$source_addr_ton,
$source_addr_npi,
$source_addr,
$dest_addr_ton,
$dest_addr_npi,
$destination_addr,
$esm_class,
$protocol_id,
$priority_flag,
$schedule_delivery_time,
$validity_period,
$registered_delivery_flag,
$replace_if_present_flag,
$data_coding,
$sm_default_msg_id,
$sm_length,
$short_message);
$status = $this->SendPDU(CM_SUBMIT_SM, $pdu);
return $status;
}

function SendSubmitMulti($service_type, $source_addr_ton, $source_addr_npi, $source_addr, $dest_addr_ton, $dest_addr_npi, $destination_arr, $esm_class, $protocol_id, $priority_flag, $schedule_delivery_time, $validity_period, $registered_delivery_flag, $replace_if_present_flag, $data_coding, $sm_default_msg_id, $sm_length, $short_message)
{
$service_type = $service_type . chr(0);
$service_type_len = strlen($service_type);
$source_addr = $source_addr . chr(0);
$source_addr_len = strlen($source_addr);
$number_destinations = count($destination_arr);
$dest_flag = 1;
$spec = “a{$service_type_len}cca{$source_addr_len}c”;
$pdu = pack($spec,
$service_type,
$source_addr_ton,
$source_addr_npi,
$source_addr,
$number_destinations
);

$dest_flag = 1;
reset($destination_arr);
while (list(, $destination_addr) = each($destination_arr)) {
$destination_addr .= chr(0);
$dest_len = strlen($destination_addr);
$spec = “ccca{$dest_len}”;
$pdu .= pack($spec, $dest_flag, $dest_addr_ton, $dest_addr_npi, $destination_addr);
}
$schedule_delivery_time = $schedule_delivery_time . chr(0);
$schedule_delivery_time_len = strlen($schedule_delivery_time);
$validity_period = $validity_period . chr(0);
$validity_period_len = strlen($validity_period);
$message_len = $sm_length;
$spec = “ccca{$schedule_delivery_time_len}a{$validity_period_len}ccccca{$message_len}”;

$pdu .= pack($spec,
$esm_class,
$protocol_id,
$priority_flag,
$schedule_delivery_time,
$validity_period,
$registered_delivery_flag,
$replace_if_present_flag,
$data_coding,
$sm_default_msg_id,
$sm_length,
$short_message);

$this->debug(”\nMulti PDU: “);
for ($i = 0; $i < strlen($pdu); $i++) {
if (ord($pdu[$i]) < 32) $this->debug(”.”); else $this->debug($pdu[$i]);
}
$this->debug(”\n”);

$status = $this->SendPDU(CM_SUBMIT_MULTI, $pdu);
return $status;
}

function split_message($text)
{
$this->debug(”In split_message.\n”);
$max_len = 153;
$res = array();
if (strlen($text) <= 160) {
$this->debug(”One message: ” . strlen($text) . “\n”);
$res[] = $text;
return $res;
}
$pos = 0;
$msg_sequence = $this->_message_sequence++;
$num_messages = ceil(strlen($text) / $max_len);
$part_no = 1;
while ($pos < strlen($text)) {
$ttext = substr($text, $pos, $max_len);
$pos += strlen($ttext);
$udh = pack("cccccc", 5, 0, 3, $msg_sequence, $num_messages, $part_no);
$part_no++;
$res[] = $udh . $ttext;
$this->debug(”Split: UDH = “);
for ($i = 0; $i < strlen($udh); $i++) {
$this->debug(ord($udh[$i]) . ” “);
}
$this->debug(”\n”);
$this->debug(”Split: $ttext.\n”);
}
return $res;
}

function split_message_unicode($text)
{
$this->debug(”In split_message.\n”);
$max_len = 134;
$res = array();
if (mb_strlen($text) <= 140) {
$this->debug(”One message: ” . mb_strlen($text) . “\n”);
$res[] = $text;
return $res;
}
$pos = 0;
$msg_sequence = $this->_message_sequence++;
$num_messages = ceil(mb_strlen($text) / $max_len);
$part_no = 1;
while ($pos < mb_strlen($text)) {
$ttext = mb_substr($text, $pos, $max_len);
$pos += mb_strlen($ttext);
$udh = pack("cccccc", 5, 0, 3, $msg_sequence, $num_messages, $part_no);
$part_no++;
$res[] = $udh . $ttext;
$this->debug(”Split: UDH = “);
for ($i = 0; $i < strlen($udh); $i++) {
$this->debug(ord($udh[$i]) . ” “);
}
$this->debug(”\n”);
$this->debug(”Split: $ttext.\n”);
}
return $res;
}

function unpack2($spec, $data)
{
$res = array();
$specs = explode(”/”, $spec);
$pos = 0;
reset($specs);
while (list(, $sp) = each($specs)) {
$subject = substr($data, $pos);
$type = substr($sp, 0, 1);
$var = substr($sp, 1);
switch ($type) {
case “N”:
$temp = unpack(”Ntemp2″, $subject);
$res[$var] = $temp[”temp2″];
$pos += 4;
break;
case “c”:
$temp = unpack(”ctemp2″, $subject);
$res[$var] = $temp[”temp2″];
$pos += 1;
break;
case “a”:
$pos2 = strpos($subject, chr(0)) + 1;
$temp = unpack(”a{$pos2}temp2″, $subject);
$res[$var] = $temp[”temp2″];
$pos += $pos2;
break;
}
}
return $res;
}

function debug($str)
{
if ($this->_debug) {
echo $str;
}
}
};