PHP - How Do I Split A 'range' String Into Two Lots?

I have a large amount of text, (text can be different at any time), I count the number of characters in the string,and divide it by 2 so that half of the text will be in one variable, the other half in the other, however I am not sure how to get the split function, or whichever function to split it by the number of characters.

example:


$text = "lorem ispum dolar sit amet, consecterur adiscing elit. Donec dictum placerat sapien, in eliefend liber";
$cut = strlen($text)/2;
//(here's where i cannot get it to work/do not know which function to use and how to use it)
//but what I want it to do is to split it half way.

Hi! So what I'm trying to do is split a multi dimensional array of strings ( each containing 3 strings inside of 1 array ) so I can write the results to a file.

So say I had a bunch of strings inside 1 array : 

class File {
    function WriteFile ( $filename, $content ) {
        $list = [
            $content
        ];
        $delimiters = File :: checkDelimiter (
            $content, 
            true, 
            false
        );
        $fp = fopen (
            $filename, 'w'
        );
        foreach ( $list as $fields ) {
            $fields = File :: SplitFileByDelimiter (
                $fields, 
                ",", 
                3
            );
            file_put_contents (
                $filename, $fields
            );
        }
        fclose ( $fp );
    }
}

$file-> File :: WriteFile (
    $filepath . $filename, 
    "TEST!, TEST!, TEST!, " . 
    "TEST!, TEST!, TEST!, " . 
    "TEST!, TEST!, TEST!"
);
	

Instead of writing : 

TEST!, TEST!, TEST!, TEST!, TEST!, TEST!, TEST! ,TEST!, TEST!, TEST!
	

to the file in a straight line, it should write it like this : 

TEST!, TEST!, TEST!, 
TEST!, TEST!, TEST!, 
TEST!, TEST!, TEST!
	

Any help is ABSOLUTELY appreciated!

 

Edited May 22 by AquariaXI

My string is like this:

line 1
line 2
....
line 3453
line 3454
etc...

I want to split the string into chunks of 500 lines, do something with those chunks and then reassamble the main $string again. The last chunk doesn't need to be 500 lines it can be less.

How can I do it?

How could I split a string in half but not in the middle of a word?


$information = "This is the string of text, however at some point in the sentence a word may get split in half.";
$cut = round(strlen($information)/2); ///where to cut (50%)
$split1 = substr($information, 0, $cut); //first half
$split2 = substr($information, $cut); // second half

First, I gotta say I am new to JavaScript, but not new to languages like PHP/C++.   I am working on a large huge JS file that has a lot of things and I have a feeling that it can be made better.  How is where I am at a loss.  If it was PHP, I'd split that JS file into probably 20 other smaller JS files, aka "classes", and it may or may not be the right thing to do, but let me focus on one particular aspect for now, and maybe deal with others later.   Here is the piece of code that bugs the me most (truncated for clarity):

   if (selection[index].selected) {

        result += '<TABLE class="list_grey" style="float: left; margin-left: 20px;">';
        result += '<TR>';
        result += '<TH colspan="2">Data</TH>';
        result += '</TR>';
        
        var flag = "All";

        if (selection[index].flag == 'P')
            flag = "Premium";
        
        result += '<TR>';
        result += '<TD>Flag</TD>';
        result += '<TD>' + flag + '</TD>';
        result += '</TR>';
        result += '</TABLE>';
    }
    else
    {
        result += '<TABLE class="list_grey" style="float: left; margin-left: 20px;">';
        result += '<TR>';
        result += '<TH colspan="2">Frame</TH>';
        result += '</TR>';
        result += '<TR>';
        result += '<TD>Frame</TD>';
        result += '<TD>' + selection[index].frame + '</TD>';
        result += '</TR>';
        result += '</TABLE>';
    }

So what it does is this:   1.  it gets "selection" var with eval() from a DIV block of HTML page, where that DIV has a looooong prepared-by-PHP JSON string with all the options prepopulated from various sources accessible to PHP.

var selection    = eval("(" + document.getElementById("result").innerHTML + ")");

2.  It then dynamically constructs and populates further HTML using logic and data found in "selection" var.   3.  This particular JS implements a selection algorithm, where basically user clicking buttons can navigate "selection" var forwards and backwards, and as user does, the dynamic portion of HTML updates per behavior defined in the JS file.   My Problem / Question:  I have a feeling that putting HTML the way it is done here in JS file is not proper separation of concerns and not good way to code.  HTML should be. .. in HTML, when possible, but being new to JS I don't know if there is a better way.  Is there a more recommended way to code what I have now ?    

I am trying to get more than one row from a database at once, then explode each value into a seperate variable. is there a way of doing this?

Hey guys! im currently learning javascript, PHP and SQL. I have a pretty solid understanding of HTML and CSS. I want to make a site similar to facebook (a good facebook). this is going to be a big project and i plan on moving to a bigger server system in a year or so to keep up with demands.    Heres how the site will function:    1. Basic registration/splash page. I understand that the finished form is sent to a php file on the server side, correct?  (ill change my server name files of course)   2. after the registration page, while the user is logged in with their new account, there are 3 pages after that that explain what the website is all about and how to use it. the last page allows the user to setup their profile information, ask friends to join, and asks what type of things they like. After the last page, it sends the user to their main control panel, where social media feed can be seen, friends and online chats, news, advertisements, links, pages and groups (think facebook and linkedin)   3. the user will have the ability to look at their profile (not the control panel), and of course switch back to their control panel. social media, friends, groups and ads will also be on their individual profile page as well.   4. i want the site to have two views: a standard view and an enhanced view. the enhanced view will reposition divs and all that stuff so they can see a background image (either stock or one they uploaded) this image will eventually change to an animated image of a 3d environment.   5. the site is going to be heavily social media based. This means social media feeds, image uploading, a structured comment system, a friend system, search functions and targeted advertising.   This is obviously a lot to ask, but since their is so much to learn related to PHP and SQL, can someone point me to the right tutorials on how to get these things done? I am currently learning javascript, PHP and SQL on lynda.com. Expect me to be on this forum a lot and asking a lot of questions. Thanks for any help. 
Edited by PHPlearner32, 10 January 2015 - 11:19 PM.

hi,

I am building a web app and need all my php on one page and links posting to same page etc, at the moment, I am linking to my townpubs.php page see code below:

townpubs.php
Code: [Select]
<!doctype html>
<?php 
 include "../config.php";
$loggedIn = (isset($_COOKIE['loggedin']) && $_COOKIE['loggedin'] == 'true')?true:false;

$town = $_REQUEST['RSTOWN'];
$towns = mysql_query("SELECT * FROM pubs WHERE RSTOWN = '".$town."' ORDER BY RSTOWN ASC");
?>
<html>
    <head>
        <meta charset="UTF-8" />
        <title>My Pub Space v1.0 &beta;</title>
        <style type="text/css" media="screen">@import "jqtouch/jqtouch.min.css";</style>
        <style type="text/css" media="screen">@import "themes/jqt/theme.min.css";</style>
        <script src="jqtouch/jquery.1.3.2.min.js" type="text/javascript" charset="utf-8"></script>
        <script src="jqtouch/jqtouch.min.js" type="application/x-javascript" charset="utf-8"></script>
        <script type="text/javascript" charset="utf-8">
            var jQT = new $.jQTouch({
                icon: 'jqtouch.png',
                addGlossToIcon: false,
                startupScreen: 'jqt_startup.png',
                statusBar: 'black',
                preloadImages: [
                    'themes/jqt/img/back_button.png',
                    'themes/jqt/img/back_button_clicked.png',
                    'themes/jqt/img/button_clicked.png',
                    'themes/jqt/img/grayButton.png',
                    'themes/jqt/img/whiteButton.png',
                    'themes/jqt/img/loading.gif'
                    ]
            });
        </script>
    </head>
    <body>
<!-- TOWNS -->
<div id="towns" class="current">
            <div class="toolbar">
                <h1>View Pubs</h1>
                <a class="back" href="index.php" rel="external">Home</a>
            </div>
<h2>Pubs in <?php echo $town ?></h2>
            <ul class="plastic">
               <?php while($row1 = mysql_fetch_array($towns))
{
echo '<li class="arrow"><a href="pubinfo.php?PUBID='.$row1['PUBID'].'" rel="external">'.$row1['rsPubName'].'</a></li>'; 
}
?>
            </ul>
        </div>
    </body>
</html>

I would like to have this on my index.php page:
index.php
Code: [Select]
<!doctype html>
<?php 
 include "../config.php";
$loggedIn = (isset($_COOKIE['loggedin']) && $_COOKIE['loggedin'] == 'true')?true:false;
$query1 = "SELECT DISTINCT rsTown FROM pubs ORDER BY rsTown asc";
$result = mysql_query($query1);


$towns = mysql_query("SELECT DISTINCT RSTOWN, COUNT(PUBID) As PubCount FROM pubs GROUP BY RSTOWN  ORDER BY RSTOWN ASC");
$counties = mysql_query("SELECT DISTINCT RSCOUNTY, COUNT(PUBID) As PubCount1 FROM pubs GROUP BY RSCOUNTY  ORDER BY RSCOUNTY ASC");
if ($loggedin == 'true'){
$locals = mysql_query("SELECT * FROM pubs INNER JOIN favepub_copy ON pubs.PUBID=favepub_copy.PUBID WHERE USERID='".$_SESSION['USERID']."' ORDER BY rsPubName asc");
}
?>
<html>
    <head>
        <meta charset="UTF-8" />
        <title>My Pub Space v1.0 &beta;</title>
        <style type="text/css" media="screen">@import "jqtouch/jqtouch.min.css";</style>
        <style type="text/css" media="screen">@import "themes/jqt/theme.min.css";</style>
        <script src="jqtouch/jquery.1.3.2.min.js" type="text/javascript" charset="utf-8"></script>
        <script src="jqtouch/jqtouch.min.js" type="application/x-javascript" charset="utf-8"></script>
        <script type="text/javascript" charset="utf-8">
            var jQT = new $.jQTouch({
                icon: 'jqtouch.png',
                addGlossToIcon: false,
                startupScreen: 'jqt_startup.png',
                statusBar: 'black',
                preloadImages: [
                    'themes/jqt/img/back_button.png',
                    'themes/jqt/img/back_button_clicked.png',
                    'themes/jqt/img/button_clicked.png',
                    'themes/jqt/img/grayButton.png',
                    'themes/jqt/img/whiteButton.png',
                    'themes/jqt/img/loading.gif'
                    ]
            });
        </script>
    </head>
    <body>
    <div id="about" class="selectable">
<p><img src="jqtouch.png" /></p>

<p><strong>My Pub Space</strong><br />Version 1.0 beta<br />
  <a href="http://www.jbiddulph.com" target="_blank">By John Biddulph</a></p>
<p><em>Mobile Web Development</em></p>
<p><a href="mailto:john.mbiddulph@gmail.com" target="_blank">E-mail</a></p>
<p><a href="http://twitter.com/#!/jmbiddulph" target="_blank">@jmbiddulph on Twitter</a></p>
<p><br /><br /><a href="#" class="grayButton goback">Close</a></p>
</div>
      <div id="home" class="current">
  <?php if (!$loggedIn){ ?>
<div class="toolbar">
<h1>My Pub Space</h1>
<a href="#about" id="infoButton" class="button slideup">About</a>
</div>
<ul class="rounded">
<li class="forward"><a href="#signup">Register an account</a></li>
<li class="forward"><a href="#login">Login</a></li>
<li class="forward"><a href="#towns">View pubs by town</a></li>
<li class="forward"><a href="#counties">View pubs by county</a></li>
</ul>
<div class="info">
          <p>All Rights Reserved &copy; 2011 mypubspace.com Created by: jbiddulph.com</p>
         </div>
<?php } else { ?>
<div class="toolbar">
<h1>Hi <?php echo $_SESSION['s_username'];?></h1>
<a href="dologoff.php" rel="external" class="button">Logout</a>
</div>
<ul class="rounded">
<li class="forward"><a href="#locals">View Locals</a></li>
<li class="forward"><a href="#towns">View Towns</a></li>
<li class="forward"><a href="#counties">View Counties</a></li>
</ul>
<div class="info">
          <p>All Rights Reserved &copy; 2011 mypubspace.com Created by: jbiddulph.com</p>
         </div>
<?php } ?>
</div>

<!-- LOCALS -->
<div id="locals">
            <div class="toolbar">
                <h1>My Locals</h1>
                <a class="back" href="#home">Back</a>
            </div>
            <ul class="plastic">
               <?php while($row1 = mysql_fetch_array($locals))
{
echo '<li class="arrow"><a href="pubinfo.php?PUBID='.$row1['PUBID'].'" rel="external">'.$row1['rsPubName'].', '.$row1['rsTown'].'</a></li>'; 
}
?>
            </ul>
        </div>

<!-- TOWNS -->
<div id="towns">
            <div class="toolbar">
                <h1>View Towns</h1>
                <a class="back" href="#home">Back</a>
            </div>
<ul class="edgetoedge">
<?php
$ltr = '';
while($row1 = mysql_fetch_array($towns)) {
 $letter1 = substr($row1['RSTOWN'],0,1);
 if ($letter1 != $ltr) {
 print'<li class="sep">'. $letter1 .'</li>';
 }
 $ltr = $letter1;
 echo '<li class="forward"><a href="townpubs.php?RSTOWN='.$row1['RSTOWN'].'" rel="external">'.$row1['RSTOWN'].'<small class="listcounter">'.$row1['PubCount'].'</small></a></li>';
}
?>
</ul>
        </div>
 
  <!-- COUNTIES -->
  <div id="counties">
            <div class="toolbar">
                <h1>View Counties</h1>
                <a class="back" href="#home">Back</a>
            </div>
            <ul class="edgetoedge">
                <?php
$ltr = '';
while($row1 = mysql_fetch_array($counties)) {
 $letter1 = substr($row1['RSCOUNTY'],0,1);
 if ($letter1 != $ltr) {
 print'<li class="sep">'. $letter1 .'</li>';
 }
 $ltr = $letter1;
 echo '<li class="forward"><a href="countypubs.php?RSCOUNTY='.$row1['RSCOUNTY'].'" rel="external">'.$row1['RSCOUNTY'].'<small class="listcounter">'.$row1['PubCount1'].'</small></a></li>';
}
?>
            </ul>
        </div>
 
 
        <form id="login" action="dologin.php" method="POST" class="form">
            <div class="toolbar">
                <h1>Login</h1>
                <a class="back" href="#">Back</a>
            </div>
            <ul class="rounded">
                <li><input type="text" name="rsUser" value="" placeholder="Username" /></li>
<li><input type="Password" name="rsPass" value="" placeholder="Password" /></li>
            </ul>
            <a style="margin:0 10px;color:rgba(0,0,0,.9)" href="#" class="submit whiteButton">Submit</a>
        </form>
  <form id="signup" action="dosignup.php" method="POST" class="form">
            <div class="toolbar">
                <h1>Sign up</h1>
                <a class="back" href="#">Back</a>
            </div>
            <ul class="rounded">
                <li><select name="RSTOWN" class="postcodedrop">
<option value="">Choose your Town...</option>
<?PHP while($row = mysql_fetch_array($result))
{

echo '<option value="'.$row['rsTown'].'">';
echo $row['rsTown'];
echo '</option>';
}?>
</select></li>
<li><input name="RSUSER" type="text" class="textbox" id="RSUSER" value="" placeholder="Username" /></li>
<li><input type="Password" name="RSPASS" value="" placeholder="Password" /></li>
<li>Male&nbsp;<input name="RSGENDER" type="radio" value="Male" />&nbsp;&nbsp;Female&nbsp;<input name="rsGender" type="radio" value="Female" /></li>
<li><input name="RSEMAIL" type="text" class="textbox" id="rsEmail" placeholder="Email" /></li>
<li><input name="RSMOBILE" type="text" class="textbox" id="rsMobile" placeholder="Mobile No." /></li>
<li><input name="RSAGE" type="text" class="textbox" id="datepicker" placeholder="DOB: dd/mm/yyyy" /></li>
            </ul>
            <a style="margin:0 10px;color:rgba(0,0,0,.9)" href="#" class="submit whiteButton">Submit</a>
        </form>
    </body>
</html>

I need to set empty variables at the top and link page to itself?!

Hey guys, I'm having a strange problem with cURL that I'm drawing an absolute blank to. It works completely fine locally, but when I upload the files to my webhost and test it over there, it doesn't work at all - it loads for about 2 minutes, and then displays:

Server error.

The website encountered an error while retrieving http://www.craigwatcher.me/playground/units.php. It may be down for maintenance or configured incorrectly.




I've checked the error logs but nothing new is being added into there. Basically I'm just iterating through a list of URLs and cURLing each of them. Let me show you the code that I'm working with:




ini_set('max_execution_time',0);

require_once('../system/utilities.php'); // This will give us our getLocations() function, which has been tested to work 100% both locally and online


$categories = array('jjj', 'ggg', 'bbb', 'sss', 'hhh');
$locations = getLocations();
if (!$locations)
exit;
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);


foreach ($locations as $country => $cities)
{
$countryCode = getCountryCode($country);

foreach ($cities as $city) {
foreach ($categories as $category)
{
$url=$city.'.en.craigslist.'.$countryCode.'/'.$category.'/index.rss';
echo $url.'<br/>';
curl_setopt($ch, CURLOPT_URL, $url);
$rss = curl_exec($ch);
if (!$rss)
echo ' FAILED to load: '.$url.'<br/>';
}
}
}

curl_close($ch);




I've already tested everything else (eg. the getLocations() and getCountryCode(), and they prove to work 100% fine both locally and online. What could it POSSIBLY be!? I'm pulling my hair out over here, my mind is boggling and I'm completely lost at what could possibly be going wrong.

My site seems to be going well, but on the back end, the users database is going crazy with duplicate entrys. but its not doing it from an INSERT. it seems to be doing it with this code:
Code: [Select]
               $bitquery = $bitcoin->move("bittleship$username", "bittleships", $cost, $minconfirmations);
               if ($bitquery == true){
               $query = mysql_query("INSERT INTO `transactions` ( `id` , `username` , `type` , `amount`, `address`) VALUES ('', '$username', 'buyclicks', '$cost', '')")  or die(mysql_error());
               $query = mysql_query("UPDATE users SET `clicks` = `clicks`+$quantity, `balance`=`balance`-$cost WHERE `username` = '$username' ") or die(mysql_error());
               include('update.php');

Hi there,

I'm creating a shopping cart and to work out postage cost I need to add all the items weights together.

The weight of each item is in the database.

I currently have this code:

Code: [Select]

$basket = $_SESSION['basket'];
if ($basket) {
$items = explode(',',$basket);
$contents = array();
foreach ($items as $item) {
$contents[$item] = (isset($contents[$item])) ? $contents[$item] + 1 : 1;
}
foreach ($contents as $id=>$qty) {
$sql = "SELECT * FROM store WHERE id LIKE '$id' AND live LIKE '0'";
$result = mysql_query($sql);
while ($rows = mysql_fetch_array($result)) {
extract($row);

so to work out each item's weight I can do $rows['weight'] * $qty.

but how could i add all the item's weight together?

i hope that makes some sense.

thanks,

jack

Hi i followed a guid to create a login area to my site however i believe its a little outdated and therefore not working, i have done a little bit but being quite new i cannot find all the problems at the moment i have:
Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in /home/a9855336/public_html/checklogin.php on line 12
here is my script line 12 is marked

<?php
$host="*************"; // Host name 
$username="a9855**6_root"; // Mysql username 
$password="************"; // Mysql password 
$db_name="****3***36_mail; // Database name 

// Connect to server and select databse.
mysql_connect($host, $username, $password)
mysql_select_db($db_name);

// username and password sent from form 
$myusername=$_POST['myusername']; // line 12
$mypassword=$_POST['mypassword'];

// To protect MySQL injection (more detail about MySQL injection)
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);

// encrypt password 
$encrypted_mypassword=md5($mypassword);

$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$encrypted_mypassword'";
$result=mysql_query($sql);

// Mysql_num_row is counting table row
$count=mysql_num_rows($result);
// If result matched $myusername and $mypassword, table row must be 1 row

if($count==1){
// Register $myusername, $mypassword and redirect to file "login_success.php"
session_register("myusername");
session_register("mypassword"); 
header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
?>

if you help please tell me the error so i can learn to debug scripts myself in the future

thanks

blink359

I am having a problem I have encounted like no other. I am running a MySQL query from PHP and for some bizarre reason, its just not working... Ok, that sounds really general. lol


To start off, here is my database:
http://i56.tinypic.com/2hh0up1.png


I am writing my own user interface with HTML/PHP/MySQL for every day catalog management:
http://i54.tinypic.com/axxsb7.png


To catalog a product is done from here (this page works):
http://i51.tinypic.com/2e0qs7s.png

ETC ...
<FORM action="result.html" enctype="multipart/form-data" method="post">
... ETC
ETC ...
Name: <INPUT name="name" type="text">
<BR>
Brand: <INPUT name="brand" type="text">
<BR>
Country of origin: <INPUT name="country" type="text">
<BR>
Material: <INPUT name="material" type="text">
<BR>
Primary colour: <INPUT name="primarycolour" type="text">
... ETC

result.html:

ETC ...
$query = "INSERT INTO products(name, brand, country, material, primarycolour) VALUES('".$_POST['name']."', '".$_POST['brand']."', '".$_POST['country']."', '".$_POST['material']."', '".$_POST['primarycolour']."')";
... ETC


To alter a product, you enter in a product ID:
http://i56.tinypic.com/2lcsqch.png

Code: [Select]
<FORM action="dataentry.html" method="post">
<DIV class="drop">Alter product ID: <INPUT name="id" type="text">&nbsp&nbsp&nbsp <INPUT type="submit" value="Submit"></DIV>

The data entry page pulls all the values from the MySQL database and populates them into the INPUT fields, so the user does not have to write them all again:
http://i56.tinypic.com/2zh0hgn.png

... ETC
echo '<FORM action="result.html" enctype="multipart/form-data" method="post">';
ETC ...
... ETC
echo 'Name:'; $query = "select name from products where id=".$_POST['id'].""; $result = mysql_query($query); $row = mysql_fetch_array($result); echo ' <INPUT name="name" type="text" value="'.$row['name'].'">';
echo $query;
ETC ...


I will now change the value of "Name" from 'a' to 'c' and submit the changes:
http://i55.tinypic.com/dzi9hc.png
http://i54.tinypic.com/ab5lyg.png


Now, you would think the result has been inserted into my database yeah? It failed... but when I enter the same command directly into MySQL. Success!
http://i51.tinypic.com/29z5y5x.png


Why the F is this happening?!

Hi,

in Mysql have a row with FLOAT 10,2

In form put the number 20.20 and after reload in form show: 20.200000762939

Hi there im not quite sure how to do something and was wondering if anyone can help me, I am going to create a large database with lots of fields and these are going to be displayed on a page i want to limit it to 20 per page and be able to sort them aswell by ID (default) and then a-z or z-a, i dont know how to do this and i also need to know how to create the next previous and last and first links im guessing theres a count++ involved ? im not quite sure but anyway if someone can help it will be great.

Thanks,

Blink359