Pain

November 8, 2013

Wow thanks, this really helped. However i do not completely understand how it works. Could you spare some time explaining it? Thanks so much netaneledri!

November 8, 2013

Hi guys. Im trying to implement a javascript validation where if a customer leaves a blank select option, then an error pops out. I was able to display one error at a time even though all fields are blank.

function validateSurvey2()
{
 
  var err1 = document.getElementById('err1');
  var err2 = document.getElementById('err2');
  var err3 = document.getElementById('err3');
  var err4 = document.getElementById('err4');
 
  var question1 = document.survey.q1;
  var question2 = document.survey.q2;
  var question3 = document.survey.q3;
  var question4 = document.survey.q4;
 
  if(question1.selectedIndex === 0) {
    err1.style.display="inline";
    question1.focus();
    return false;
  }
 
  else {
    err1.style.display="none";
  }
  if(question2.selectedIndex === 0) {
    err2.style.display="inline";
    question2.focus();
    return false;
   
  }
  else {
    err2.style.display="none";
  }
  if(question3.selectedIndex === 0) {
    err3.style.display="inline";
    question3.focus();
    return false;
  }
  else {
    err3.style.display="none";
  }
  if(question4.selectedIndex === 0) {
    err4.style.display="inline";
    question4.focus();
    return false;
  }
  else {
    err4.style.display="none";
  }
 
 
}

This is probably because the script stops after the first 'return false'...

I want every block of IF executed.

thanks in advance for any help:)

September 10, 2013

actually if i put an alert into both of those and change from else if to if - i get two alerts with different values ://

September 10, 2013

Hi.I want to get the value (or rather text) of selected option.

function val() {
 
var num1 = parseInt(document.getElementById("over_16").value);
var mytrip = document.getElementById('privated').text;
    
    if(mytrip = 'Lake District') {
      document.getElementById("sum").value = num1 * 55;
 
    }
    
    else if(mytrip = 'Private Trip') {
      document.getElementById("sum").value = num1 * 120;
 
    }
 
    }

Somehow i always get the value which is in the first IF statement. It doesnt matter which one is selected, the value will be the one in the first IF statement.

if(mytrip = 'Lake District') {
      document.getElementById("sum").value = num1 * 55;
 
    }

and this is my <select> code

<select name="trip" style="width: 205px" id="privated">
<option value="Lake District">Lake District</option>
<option value="Private Trip">Private Trip</option>
</select>

this is how the function gets activated (another dropdown list)

switch($available_places[0]) {
case 1:
$select = '<select id="over_16" name="over_16" style="width: 206px" required="required" onchange="val()"><option>0</option><option>1</option></select>';
break;
 
case 0:
$select = '<select id="over_16" name="over_16" style="width: 206px" required="required" onchange="val()"><option disabled="disabled">0 places left</option></select>';
break;
}

what could be the problem here?

July 23, 2013

Hi.

I want to get an element by id with a value, instead of just id.

so here instead of disabling an element with id 'service14', i would like to disable an element with that id AND a value (let's say 'abc').

What do i need to change in that line?

Thank you!

June 22, 2013

Hi. I am trying to make my url look more attractive.

So far i have managed myweb.com/job.php?ref=333 to make look myweb.com/job?ref=333

How can i shorten it further by making myweb.com/job/333

I have this code



RewriteBase /
 
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.php -f
RewriteRule ^(.*)$ $1.php
 
 
 
 
 
RewriteRule ^job-([0-9]+)\.php$ job.php?ref=$1
 
RewriteRule ^job/([a-zA-Z0-9_-]+)/([0-9]+)\.php$ job.php?ref=$2
 
RewriteRule ^([a-zA-Z0-9_-]+)$ job.php?ref=$1
RewriteRule ^([a-zA-Z0-9_-]+)/$ job.php?ref=$1

thanks for your help:)

May 27, 2013

Im having trouble understanding the point of assigning certain values to certain variables within the class.

Say we have

<?php
 
class MyClass {
public $variable;
 
public function getVariable($variable) {
$this->variable = $variable; 
}
 
}

Why assign the value of $variable to $this->variable instead of simply using $variable which has been passed as an argument?

Thanks:)

May 27, 2013

Thanks! Everything's magically clear to me now!

May 27, 2013

Thanks for the help guys. The thing i did not understand here was this line:

function __autoload($classname) {

I didn't get how does the PHP now what the $classname is. I found a tutorial which explained that instantiating a class tells the __autoload which class is an argument.

$validator = new Validator;

am i correct?

May 27, 2013

Hi.

I am trying to learn to autoload classes, but im having some problems understanding the implementation and the usefulness of this.

index.php



$classname = 'class.validator';
 
function __autoload($classname) {
$filename = $classname . '.php';
require_once($filename);
}
 
$validator = new Validator;

class.validator.php



<?php
 
class Validator {
 
function validateSomething() {
...
}
 
}
?>

This code does not work even though i followed a tutorial. And even if it would work, then i fail to see how this is better than:



<?php
require_once('class.validator.php');
 
$validator = new Validator;
 
?>

May 21, 2013

I am trying to retrieve multiple values from the db and then display them, however the way i'm doing it seems wrong.



<?php
$query_members = "SELECT username, id FROM members LIMIT 10";
$result = $db->run($query_members);
 
$i = 0;
foreach($result as $username[$i]){
echo "<br />" . implode(" ", $username[$i]);
$i++;
}
?>

This way one variable holds two values - username and id. How can i assign those values to two different variables?

Thanks!

May 20, 2013

Foreach didn't help. I've tried

 
foreach($results as $m) {
echo $m;
}

and i still get "Array".

May 20, 2013

Hello there.

I am using the PDO wrapper class:

http://www.imavex.com/php-pdo-wrapper-class/

The problem:

When i'm trying to retrieve data from the db and then echo it out - the result i get is "Array" and not the actual value.

What is wrong here, how can i retrieve actual value?

The way i'm trying to retrieve and display values:

 
$results = $db->select("mytable");
echo $results;

February 19, 2013

Thanks for your help guys.

Is this what you had in mind?

var i = 0;
if(i <= 4)
{
setInterval(function(){
loadUpdateLevelPercentage();
}, 1000);
i++;
}

February 19, 2013

Hello.

I am in need of some help:)

I know how to set up an interval, but now i need to clear it. So i thought u guys could help me out:)

I set my interval like this

setInterval(function(){
loadUpdateLevelPercentage();
}, 10000);

How can i clear it after 40 seconds?

February 15, 2013

Hi.

I am trying to call a jquery function inside a conditional statement:

[code

<!doctype html>

<html>

function loadSolded()

{

$(".soldiers").css("background-image", "url('images/icon_soldier_gas_recruiting.png')");

}

</script>

</head>

<body>

<?php

$lol = 1;

if($lol == 2)

{

?><div class="soldiers"></div><?php

}

else

{

?>

loadSolded();

</script>

<?php

}

?>

</body>

</html>

[/code]

But it does not work this way. What am I doing wrong here?

February 11, 2013

I'm having this problem where jquerys fadeIn won't start when the content is loaded with AJAX. It works fine on a directly loaded page.

Some solutions would be appreciated:) thanks:)!

February 6, 2013

Hello.

I am trying to create time in the future.

<?php

$time_in_minutes = (round($time / 60));
$future_time = date("H:i:s",time() + 60 * $time_in_minutes);

?>

It all works. I get something like "15:58:28". Now if i want to insert this record into the database, which type should i pick? DATETIME or TIMESTAMP?

Note that i want to check whether the current time has now passed the future time.

Thanks:)

January 24, 2013

Hi there. I have a question regarding jQuery remove() method.

I have a lot of stuff being retrieved with ajax (basically every 10 seconds) so the browser eventually starts slowing down. I want to somehow remove the old elements before i retrieve new ones. Would remove() help? Does it completely remove the element?

January 10, 2013

i've tried

header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache");
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");

but nothing has changed..

January 9, 2013

Hi.

I have a very common problem, IE caches stuff, so in order to see new things come up i must reload all page.


function mountOne()
{

var myurl = 'mount_shotgun.php';
myRand = parseInt(Math.random()*99999999); // cache buster

var xmlhttp2;
if (window.XMLHttpRequest)
{
	xmlhttp2 = new XMLHttpRequest;
}

xmlhttp2.onreadystatechange = function()
{
	if (xmlhttp2.readyState == 4 && xmlhttp2.status == 200)
	{
		document.getElementById("retrieve").innerHTML=xmlhttp2.responseText;
	}
}


$('#inventory_item1').css("background-image", "url('images/shotgun.png')");

xmlhttp2.open("GET", myurl + "?rand=" + myRand, true);

   xmlhttp2.send();



}

My attempt to bust it using a random token was unsuccessfull

var myurl = 'mount_shotgun.php';
myRand = parseInt(Math.random()*99999999); // cache buster

I would gladly appreciate any kind of help. Thank you.

November 27, 2012

I would like to display this in my uni presentation:)

November 27, 2012

What statement should i use instead of mysql_query. I want to test this injecton.

November 27, 2012

Not sure if it is a good place to ask, but I'll do it anyway.

if i have a following query:

$query2 = mysql_query("SELECT * FROM testas WHERE username = '$username');

How do i drop the table by injecting sql?

have tried this

x’; DROP TABLE testas; --

but nothing happened:D

November 22, 2012

Hello. I am trying to build a website with many ajax features.

To make the web look more like an app, I am retrieving information with ajax. So i have this code where i can retrieve two different pages with two clicks, but when i retrieve one, and another one on top - i want the first to disappear. However both pages are being loaded. Is there any jQuery method that could effectively hide the first loaded page.

These are two functions that can load pages.

// first function to load military.php
function loadMilitary()
{
var xmlhttp2;
if (window.XMLHttpRequest)
{
xmlhttp2 = new XMLHttpRequest;
}

xmlhttp2.onreadystatechange = function()
{
if (xmlhttp2.readyState == 4 && xmlhttp2.status == 200)
{
document.getElementById("military_tab").innerHTML=xmlhttp2.responseText;
}
}
xmlhttp2.open("GET","military.php",true);
xmlhttp2.send();
}


// second function to load hospital.php
function loadHospital()
{
var xmlhttp2;
if (window.XMLHttpRequest)
{
xmlhttp2 = new XMLHttpRequest;
}

xmlhttp2.onreadystatechange = function()
{
if (xmlhttp2.readyState == 4 && xmlhttp2.status == 200)
{
document.getElementById("hospital_tab").innerHTML=xmlhttp2.responseText;
}
}
xmlhttp2.open("GET","hospital.php",true);
xmlhttp2.send();
}

And i load them by using the onclick method


<div class="hospital_tab" onclick="loadHospital()"></div>
<div class="military_tab" onclick="loadMilitary()"></div>

I really need help with this guys, thanks for any hint! Hope you understood what i want.

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Pain

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Posts posted by Pain

multiple validation

multiple validation

get option value

get option value

get element by id with particular value

short url with mod rewrite

$this->variable = $variable? Why assign?

__autoload()

__autoload()

__autoload()

Foreach multiple results

PDO wrapper - select and display

PDO wrapper - select and display

clearInterval

clearInterval

jquery inside php conditional statement

jquerys fadeIn won't start when the content is loaded with AJAX

PHP time in the future

jquery remove

Cache busting

Cache busting

Dropping The Table

Dropping The Table

Dropping The Table

Ajax Problem

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