I'd like to display a div half the time. I thought about something like this :
Generate a number with : $nb = rand(0,1);
Then, for my div, I use a condition if:$nb == 0, it shows, if it is 1, it doesn't.
What do you think ?
Is there a easiest way because it looks a little untidy...
1. You should post such questions on [codereview.SE]
2. You can simplify your code to this:
if (rand(0,1)) {
//Show the div
}
0 will be converted to false, while 1 is being converted to true.
It's fine. If you're lookin for another way to do it use javascript :)
<script type="text/javascript">
if(Math.round(Math.random())==1) {
document.getElementById("myDiv").style.display='none';
} else {
document.getElementById("myDiv").style.display='block';
}
</script>
(gettimeofday()["usec"] % 2 == 1)
could be your randomization. gettimeofday()["usec"] is the current millisecond and we look at it whether it is odd or not.
Related
I'm in trouble because i can't figured it out how to find my answer.
I'm creating a wordpress website and i have a search engine
I've created an option in my admin panel and code something to write in my option table, but my problem is now
firstly i grab my options from my database with
$mysynonymvalue = get_option( 'synonym-custom' );
I precise that it returne to me something like this ( mango, apple, banana)(this is an example of course)
My Url is something like this :
http://supserwebsite/wordpress/?sfid=2675&_sf_s=toto
Or this
http://superwebsite/wordpress/?sfid=2675&_sf_s=virtualisation cloud devops
so i've created a variable to catch the queries
$motsclefs3= $_GET['_sf_s'];
Now i want to compare the string $mysynonymvalueconvert with $motsclefs3 to find if it match so i write
if (strpos ($mysynonymvalue, $motsclefs3) ){
echo '<script >
$(document).ready(function(){
$(".vc-tabs-li:nth-child(2)").get(0).click();
});
</script>';
}
else{
echo '
<script >
$(document).ready(function(){
$(".vc-tabs-li").get(0).click();
});
</script>';
};
};
The solution seem to work correctly but i can't have the first result, it coompare indeed with all the results but not my first one.
And it doesn't work so fine because with only one letter it return a match ( for example 'a')
Any solution ?
Thanks
*provided url(s) are not accessible.
Solution:
Create a dictionary of option from db and then search the element which you are looking.
So far i move up a bit !So i came with this
I still have
$mysynonymvalue = get_option( 'synonym-custom' );
$mysynonymvalueconvert = preg_split('/[,]+/',$mysynonymvalue);
To grab my words from my database and to convert it into an array.
(the point of this is to get elements that were wrote by an user elsewhere on the admin panel of wordpress)
I also still have
$motsclefs3= $_GET['_sf_s'];
To grab my actual queries ( that will serv me to compare ). I precise that it return me a string. To be more specific, an URL like this (http://mywebsite/wordpress/?sfid=2675&_sf_s=examen) return me (in string) "examen".
Now my point is still to compare if
$motsclefs3;
is inside
$mysynonymvalueconvert
So i've created a "for" loop like this
for ($i = 0; $i <= count($mysynonymvalueconvert); $i++){
if(in_array($motsclefs3, $mysynonymvalueconvert)){
echo'yes';
break;
}
else{
echo 'no';
break;
};
};
But i'm still blocked, this return "yes" only if it match with the first element from
$mysynonymvalueconvert
So any ideas to help me ?
Thanks!
I have an original link:
http://example.com/catalog/catagoryname/
When I click on 2-th page, url like this:
http://example.com/catalog/catagoryname/1
Ok, how to hide number of page in the end url ?
Best regards.
As far as I understand you don't want to have anywhere:
http://example.com/catalog/catagoryname/1 but http://example.com/catalog/catagoryname/ but you want to use urls with other numbers http://example.com/catalog/catagoryname/2, http://example.com/catalog/catagoryname/3 and so on. You don't need to do it in .htaccess. You should do it in your PHP code
Simple in place where you use pagination (you probably have loop for this), you should use condition:
for ($pageNr = 1; $pageNr < $totalPages; ++$pageNr) {
if ($pageNr == 1) {
echo 'http://example.com/catalog/catagoryname/';
}
else {
echo 'http://example.com/catalog/catagoryname/'.$pageNr;
}
}
Of course it's only sample, because you haven't put full code in your question
I've been trying to conditionally include a banner which incorporates a form into a php site. Previously the banner was part of the header but I need to exclude it from certain pages in order for other elements to be included.
I'm using $_SERVER['SCRIPT_NAME'] to define a variable on the page and then check for this. I'm a little confused though as to where the variable should be placed. Will it work if placed in the header or does it need to be included in every separate page?
This is what I've got:
<?php $currentPage = $_SERVER['SCRIPT_NAME']; ?>
<?php if ($currentPage != "/ecoProcess.php") {
include ("includes/banner.php");
} else {
echo "ECO";
}
?>
For further info, I've updated the code because of my schoolboy error with -= instead of != but neither of the conditions works now (no banner, no "ECO"). The pages are being called using this method:
<?php if($_GET['action']=='boiler_installation_replacement') {?> class="active"<? php } ?>>Boiler Installation and Replacement
I've been advised to try var_dump which reveals this:
' string(14) "/ths/index.php" ' everytime. I guess this is due to the way the pages are called but I don't know how to get around this.
-= means subtract right value from left side. Eg.
$a = 5;
$a -= 3;
echo $a; // will print 2 because 5 - 3 = 2 :)
Change it to comparison == or better ===. You can also use !=/ !== for opposite cases.
Change your condition like this.
<?php
$currentPage = $_SERVER['SCRIPT_NAME'];
if ($currentPage == "/ecoProcess.php") {
include ("includes/banner.php");
} else {
echo "ECO";
}
?>
Try this:
just change your if statement because it is not logically correct.
Use this
if ($currentPage == "/ecoProcess.php")
instead of
if ($currentPage -= "/ecoProcess.php")
Thanks
okay here is my code :
var co = 0;
var comp = '';
<?php $i = 0;?>
while (co < <?php echo $db->count_rows(); ?>)
{
if ((parseInt(value) >= <?php echo $mfr[$i] ?>) && (parseInt(value) <= <?php echo $mto[$i] ?>))
{
comp = 'T';
break;
}
co++;
<?php $i++; ?>
}
i'm still learning about this whole php and javascript thing, and i know there are many things that i still had to work to to improve my understanding to this both language. that's why i really need your help in this
i'm trying to get the while iteration to work so i can compare the variable from javascript with variable from php which took the value from database. the php variable ('$mfr' and '$mto'), as you can see, is an array. now i want it to look at every element of both and if it meets the condition then it will update the variable 'comp' and stop the whole while iteration
but the problem is the '$i' variable doesn't do the iteration thing. it runs only once so my '$mfr' and '$mto' value doesn't go anywhere. how can i fix this so i can compare the javascript value with the php '$mfr' and '$mto' value?
your help would be much appreciated, thank you :)
EDIT
well, it is actually a function of custom validation for jqgrid.
and i do know that php is a server-side and javascript is a client-side language theoretically, though i don't really know it is practically
what i'm actually trying to do is when a user input a value and submit it, the system will check whether the value that was entered are between value of 'fromid' and 'toid' column of a table in database
here is my full code of the function
function checkid(value)
{
var co = 0;
var comp = '';
<?php $i = 0;?>
while (co < <?php echo $db->count_rows(); ?>)
{
if ((parseInt(value) >= <?php echo $mfr[$i] ?>) && (parseInt(value) <= <?php echo $mto[$i] ?>))
{
comp = 'T';
break;
}
co++;
<?php echo $i++; ?>
}
if (comp != 'T')
{
return [true, "", ""];
}
else
{
return [false, "Value entered is already between a range. Please try again!", ""];
}
}
while this is how i got the '$mfr' and '$mto' variable
<?php
$db=new database($dbtype, $dbhost, $database, $dbuser, $dbpassword, $port, $dsn);
$db->query("select fromid, toid from CORE_ID");
$i = 0;
while($row = $db->get_row())
{
$mfr[$i] = $row[fromid];
$mto[$i] = $row[toid];
$i++;
}
?>
if theres any better way to do this, then please do tell me
Typically, PHP is for server side logic and JS is for client side logic. If you want to send a value from JS to be processed in PHP, you'll probably need to use something like AJAX, which jQuery makes pretty easy with jQuery.ajax().
Getting the client value to be processed is the difficult part. Once you can do that, rewriting your code logic in full PHP should not be difficult.
EDIT: If I'm misunderstanding where variable value comes from, please say so!
EDIT 2: It looks like you want to have client input compared to server side data. JS will not have access to your PHP variables unless they are specifically sent there. Likewise, you can send your JS value to the server for validation in the PHP.
In your case, you could use JSON to send send the JS your validation dates. Assuming you don't have too many dates, it will probably be faster than sending a value to the server and waiting for a response.
I found a good example of using JSON at another post. You can send an array like:
<?php
$xdata = array(
'foo' => 'bar',
'baz' => array('green','blue')
);
?>
<script type="text/javascript">
var xdata = <?php echo json_encode($xdata); ?>;
alert(xdata['foo']);
alert(xdata['baz'][0]);
// Dot notation can be used if key/name is simple:
alert(xdata.foo);
alert(xdata.baz[0]);
</script>
For your code, you could put $mfr and $mto into a single 2D array. Here is how your new JS might look, assuming xdata contains $mfr and $mto:
function checkid(value) {
var co = 0, comp = '', i = 0, nrows = xdata.mfr.length;
while (co < nrows) {
if ((parseInt(value) >= xdata.mfr[i]) && (parseInt(value) <= xdata.mto[i])) {
comp = 'T';
break;
}
co++;
i++;
}
if (comp != 'T') {
return [true, "", ""];
} else {
return [false, "Value entered is already between a range. Please try again!", ""];
}
}
You have a loop in your Javascript, not your PHP. So the PHP is only going to get executed once. You need to rethink your approach. Without knowing what the script is supposed to actually achieve it's difficult to provide working code, but you at least need to put the loop into the PHP instead of the Javascript.
Before I can answer you should understand what's going on exactly:
PHP is being executed on the server, then sends back the result (HTML and Javascript) to the client (the browser).
Javascript is being executed on the client side. So this only starts after PHP is completely done. For this reason you can't mix Javascript and PHP.
Check the source of the page, then you'll see exactly what the server returns (what HTML/Javascript PHP generates) and you'll get a better insight of what happens.
Now, if you understand this, you may be able to solve your own problem. I don't exactly know what you want to do, but I can advice you that if you need Javascript to check values from the database, you should generate Javascript using PHP that defines these values in the Javascript like for example this:
var my_js_var = <?=$my_php_var?>
var another_var = <?=$another_one?>
Now they are defined in Javascript and you can use them (and check them).
When you have a large database it can become inefficient to do it like this and you might want to look into a technology called AJAX, which allows Javascript to do a request to the server and get back data from a PHP script.
You would also want to do this if there's data involved you don't want to be publicly viewable (because everyone can look into the source of your page.
In all major browsers, except Internet Explorer, the following script returns the page to its previous vertical position on reload:
<?php $y = $_COOKIE["y"]; ?> //in head tag before any output
and
<?php
print "<body onScroll=\"document.cookie='y=' + window.pageYOffset\" onLoad='window.scrollTo(0,$y)'>";
Can someone please tell me how I would modify this code to remember the page's vertical position in IE? Thanks.
From w3Schools :
IE 8 and earlier does not support this property, but may use "document.body.scrollLeft" and "document.body.scrollTop" instead.
I use the following code to do basic IE/not-IE browser detection:
if(document.all) { //if IE
//code
} else { //if not IE
//code
}
You should be able to combine this with AlecTMH's document.body.scrollLeft and document.body.scrollTop suggestion to get where you're going. But you're likely going to have to write a function for it and then call that in onScroll().
I'm not exactly a JavaScript wiz, but...
function blah() {
if(document.all) { //if IE
document.cookie='y=' + document.body.scrollTop
} else { //if not IE
document.cookie='y=' + window.pageYOffset
}
}
...might almost be functional code.