PHP - Code Breaking Once Applying '+' '/' '*' Or '-'
I have gold data being reported here goldprices.org.uk (scroll down near the bottom). Recently it broke for no apparent reason. I checked the scraper and everything seems to be OK. The issue is that the gold price in (troy) ounces is being scraped fine - however to work out the price in grams you must multiply by 0.0321 (grams in a troy ounce). The code looks like this:
Code: [Select] $ounce_price = null; $grams_price = null; if(count($nodes) == 1 && $nodes[0][1]) { $ounce_price = $nodes[0][1]; $grams_price = $ounce_price * 0.0321; However $ounce_price * 0.0321 breaks the code and returns '0.0321'. I then tried the code: Code: [Select] $ounce_price = null; $grams_price = null; if(count($nodes) == 1 && $nodes[0][1]) { $ounce_price = $nodes[0][1]; $grams_price = $ounce_price + 1; And the code returned the value '2'. So it appears that when $ounce_price is being multiplied/subtracted etc it reverts to a value of '1'. However if I do $grams_price = $ounce_price the value is the correct ounce price. I'm so confused as to why when adding an equation to $ounce_price the value reverts to '1' as opposed to equalling the correct number. Any help here would be HUGELY appreciated - I've been stuck for several days and only just decided to ask online :s Nick Similar TutorialsWhat is the best way to break up repeating code? Make each page from a standard template (e.g. Header, Columns, Footer) and include the variable content using PHP?? Or make each page a stripped down PHP page which creates the variable content and then Includes the static parts (e.g. Header, Columns, Footer)?? Hope you follow me?! :-/ Debbie hi gang, I just spent the better part of the day trying to find a way modularize my PHP code. I want to execute a php file and load the results into my main php program. I am not looking to include php source code into my prog and then execute it, I want to execute it and load the results into my prog. I know I can do this if I call a php file via apache: using file(http://ww.site.com/blah.php?parms) but is there a way to do it without using http ? The php file is local - in the same directory. I want something like this: $r = something.php?parms... how do I do this? regards, david Hoping someone can help me on this, but I had some help on getting this code (or part of it) to finally work the way I wanted it, however, there are a few end-user issues with it now. What this code does is disables the user(s) from posting any kind of links (www.example.com or example.com). However, now I'm trying to....expand it a little I guess. Here is the current code: Code: [Select] if (stristr($pagetext, 'http://') OR stristr($pagetext, 'www.') OR stristr($pagetext,'@') OR stristr($pagetext, '[URL') OR stristr($pagetext, '[url') OR stristr($pagetext, '[IMG') OR stristr($pagetext, '[img') OR preg_match("#[a-z0-9]([-a-z0-9]+)?(\.[a-z]{2,3})?(\.[a-z]{2,4})#i", $pagetext)) { more code here } Now, I KNOW what most of that code does, but what I need, is what exactly this code does: Code: [Select] preg_match("#[a-z0-9]([-a-z0-9]+)?(\.[a-z]{2,3})?(\.[a-z]{2,4})#i", $pagetext)Can anyone break this down and tell me what exactly does what? Thanks in advance This topic has been moved to Miscellaneous. http://www.phpfreaks.com/forums/index.php?topic=343488.0 Hello everyone, I am trying to see if a term, sent from a form, is in an array that has been pulled from the database. The problem I am having is that while the terms look the same the one from the database is using an Ascii character for a forward slash. & # 047 ; I have tried adding the Ascii to the form value but it just rendered as a forward slash (no surprises there I suppose) So the main reason for asking is that for all the other items in the form I can use in_array. This keeps things really tidy and easy to use. Any ideas how I can still use in_array and get around the Ascii problem? Cheers Ian onlinegamekey. com/MTGT-Auction.php is the page I'm working on. The problem I'm having is cards with an apostrophe in the name breaks the operation. I am populating the Select Box with the Card Names and those are coming in fine, its not until I try to use the select value to get that specific card data do I have an issue. This query specifically Code: [Select] $quer2=mysql_query("SELECT * FROM auctions WHERE Card_Name ='$cards' Order By Price_Per") or die; I've tried $quer2=mysql_query("SELECT * FROM auctions WHERE Card_Name =" . htmlspecialchars($cards) . " Order By Price_Per") or die; but then I get no data for any card. Here is the page code I'm working with. Code: [Select] <?php $cards = $_POST['cards']; //SELECTING DATA FOR THE DROPDOWN $sql = "Select Card_Name From auctions Group BY Card_Name ASC" or die; $result = mysql_query($sql); ?> <script type="text/javascript"> <!-- var optList; var optsValue = new Array(); var optsText = new Array(); //when the page loads get the original options values and text and store them in arrays window.onload = function() { optList = document.getElementsByTagName("option"); for(var i=0; i<optList.length; i++) { optsValue[i] = optList[i].value; optsText[i] = optList[i].text.toLowerCase(); } } function searchSel(txtSearch) { //clear all the current options document.getElementById("items").options.length = 0; var count = 0; for(var i=0; i < optsValue.length; i=i+1) { if(optsText[i].indexOf(txtSearch.toLowerCase()) == 0) { //match found //add this option to the select list options var newOpt = new Option(optsValue[i],optsText[i],false,false); document.getElementById("items").options[count] = newOpt; count = count+1; } } } function reload(form) { var f1 = document.forms['f1'] var val=f1.cards.options[f1.cards.options.selectedIndex].value; self.location='MTGT-Auction.php?card=' + val ; } //--> </script> <style type="text/css"> body { background-color:#000000; } .row-one { background-color: #666666; font-family: Arial, Helvetica, sans-serif; font-size:12px; font-weight: bold; line-height: 17px; color:#CCFF33; } .row-two { background-color: #333333; font-family: Arial, Helvetica, sans-serif; font-size:12px; font-weight: bold; line-height: 17px; color: #FF0; } .th { background-color:#000000; font-family:Arial, Helvetica, sans-serif; font-size:14px; font-weight:bold; color:#CC0000; padding: 2; } </style> <!-- CREATE FORM & SELECT BOX --> <form method="post" name="f1" action="MTGT-Auction.php"> <select name="cards" id="items"> <option value='0'>Select...</option> <?php while ($row=mysql_fetch_array($result)) { if ($row['Card_Name']==@$cards) { echo "<option selected value='$row[Card_Name]'>$row[Card_Name]</option>"; } else { echo "<option value='$row[Card_Name]'>$row[Card_Name]</option>"; } } ?> </select> <br /> <input type="text" id="txt" value="Card Name?" onfocus="this.value==this.defaultValue?this.value='' :null" onkeyup="searchSel(this.value);" style="color:#000000; font:Arial; font-size:12px; background-color:#e1e1e1;" /> <BR /> <input type="submit" value="Submit" name="submit" /> <input type=button onClick="location.href='MTGT-Auction.php'" value='Reset' /> </form> <!-- CREATE TABLE WHERE DATA GOES --> <table border="1" bordercolor="#000000"> <tr align="center"> <th class="th">Auction ID</th> <th class="th">Card Name</th> <th class="th">Cards Per Auction</th> <th class="th">Auction Price</th> <th class="th">Cost Per Card</th> <th class="th">Date Listed</th> <th class="th">Seller Name</th> </tr> <?php //GET DATA FOR TABLE BASED ON SELECTED CARD & LOOP THROUGH $quer2=mysql_query("SELECT * FROM auctions WHERE Card_Name ='$cards' Order By Price_Per") or die; $i =1; WHILE($row = mysql_fetch_array($quer2)) { if ($i%2 !=0) $rowColor = "class='row-one'"; else $rowColor = "class='row-two'"; echo "<tr $rowColor>" . "<td>" . $row[Auction_ID] . "</td><td>" . $row[Card_Name] . "</td><td>" . $row[Qty_Listed] . "</td><td>" . $row[Price] . "</td><td>" . $row[Price_Per] . "</td><td>" . $row[Date] . "</td><td>" . $row[Seller] . "</td></tr>"; $i++; } //} ?> <?php //QUICK CHECK IS OUR VARIABLE SET??? echo "<font color=\"#FFFFFF\">". $cards . "</font>"; ?> </table> I image this is probably a very common problem & easy fix that has been answered many times, but I haven't found any thing that worked for me so any help.. or links to similar issues would really be appreciated. Thank you, ini_set('session.cache_limiter','public'); session_cache_limiter(false);
they give warning
Hi, I'm writing my own code for my website but have come across something I can't fathom and don't know what search terms I'd need to describe what I want, to allow me to Google it. I've got some code that retrieves the image names of pictures inside a directory, that then prints them on the screen as links. Then people can click whichever link to see that pic, and I can just upload new images to the images folder without needing to add the links to the code manually. All is working, but I want to use a table for neatness and put a certain number of the image links in each row. So, say I have 20 images in the folder, but want to display only 5 image links per row in the table, I need 4 rows to be created with 5 links in each one. I know I can use count() to count the number of images found in the folder, but I don't know how to use PHP to make a new row every 5 image links and put the 5 links in the row. This is my code so far: Code: [Select] <?php $dir = '/home/vol7/myhost.com/b12345678/htdocs/images/'; $files = scandir($dir); foreach ($files as $pic) { if (is_dir($dir.$pic)) { unset($pic);} else { echo "$pic"; }} ?> So, if I got it doing what I want, it'd end up outputting something like this if I had 7 image links: Code: [Select] <table> <tr> <td><a href=etc">image 1</a> - <a href=etc">image 2</a> - <a href=etc">image 3</a> - <a href=etc">image 4</a> - <a href=etc">image 5</a></td> </tr> <tr> <td><a href=etc">image 6</a> - <a href=etc">image 7</a></td> </tr> </table> Any help appreciated, even a link to a webpage explaining something similar that gives me enough information to alter it and make it work for what I want. Thanks. Hi, I'm just wondering if there's any way to use the Limit to limit a search to the first instance of multiple items in one column? Eg, in a table called news I might have: subject content general general news1 general generalnews2 faq faq1 faq faq2 general generalnew3 When I do Code: [Select] SELECT * FROM news ORDER BY content DESC LIMIT 0,1(same if I substitute the word subject for content in the line above) ...I get just the first item. Ie: subject content general generalnews1 How would I go about getting the first instance of each subject and its contents to appear? Ie: subject content general generalnews1 faq faq1 Thanks, Dave I have a black and white image dividing a city into zip codes. So a bunch of shapes and that's it.
I load it (imagecreatefrompng) and I'm filling the zipcodes with color based on coordinates of a spot in the zipcode and a color relevant to information about it.
If I use imagefill (or imagefilltoborder) to fill a zip code it works great.
But - I also need to apply text and lines to that image on top of those filled shapes.
My problem is it's always doing the fill last no matter what order I put it in the code - so anywhere a line crosses a zipcode it only gets half filled in.
For example I attached an image - if i turn off the lines the white box is filled in with a shade of red. Not a great example since I think the line is right on top of the coordinate of the fill but it does it all over the image.
What am I missing? Is there not a way to choose the order your draw to the image object? Is there a way to apply a change before doign the next one short of writing and reloading the file? I am trying to break down the tables i have on my website in order to place them into my mySQL database. I am new to php and have been having some trouble and any help would be greatly appreciated. So far I have this but it doesnt seem to be working. I am using DOMDocument but I wonder if maybe preg_match woulf be better? Fatal error: Call to a member function getElementsByTagName() on a non-object in D:\Hosting\5915198\html\2.php on line 11 <?php // Load html string $dom = new DOMDocument(); $dom->loadHTML('www.empirebuildingsestate.com/company.html'); // Get tables from html $tables = $dom->getElementsByTagName('tr'); // Get rows from tables $rows = $tables->item(0)->getElementsByTagName('td'); // Loop over each row foreach ($rows as $row) { // Get each column by tag name $cols = $row->getElementsByTagName('td'); // Echo values (here you can assign them in array for example) echo $cols->item(0)->nodeValue.'<br />'; echo '<hr />'; } ?> I have a site that everything was typed manually, but I want to get all this info off so I can put all info into a database for easier editing and so forth.
I'm trying this code, which works to a point.
function curl($Url){ if (!function_exists('curl_init')){ die('cURL is not installed. Install and try again.'); } $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $Url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $output = curl_exec($ch); curl_close($ch); $start = strpos($output, '<h2 style="text-align: center;"><span style="text-decoration: underline;">Alabama Tattoo Shops</span></h2>'); $end = strpos($output, '<p>', $start); $length = $end-$start; $site = substr($output, $start, $length); $site = explode("<p>", $site); foreach ($site AS $line) { print_r($line); } return $output; } $site = curl('http://www.tattooshopusa.com/alabama/'); I'm experimenting with a basic CRUD App. The table created by the code below renders, however when I view source, the last tag is the closing </tr> after the while loop finishes. There's nothing after that. No closing table, html, or body tags. I can't see what I've done wrong.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Eric's PHP CRUD App</title> <style type="text/css"> table { font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; text-align: center; margin: 0 auto; } table td { text-align:center; border: 1px solid #dfdfdf; } tr:nth-child(odd) { background: #fdfdfd; } tr:nth-child(even) { background: #B8D3FF; } th { background-color:#ccc; } .center { width: 1050px; margin:0px auto; } h1 { font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 14px; padding-bottom: 15px; text-align: center; margin: 0 auto; color: white; } </style> </head> <body bgcolor="#999"> <?php require_once("db_connect.php"); echo "<h1>Update Student Records</h1>"; echo "<table cellpadding='10'>"; echo "<tr bgcolor='#cccccc'>"; echo "<th>First Name</th>"; echo "<th>Last Name</th>"; echo "<th>Test 1 Grade</th>"; echo "<th>Test 2 Grade</th>"; echo "<th>Test 3 Grade</th>"; echo "<th>Test 4 Grade</th>"; echo "<th>Final Exam Grade</th>"; echo "<th>Average Grade</th>"; echo "<th>Final Grade</th>"; echo "<th>delete</th>"; echo "<th>edit</th>"; echo "</tr>"; $sql = "SELECT * FROM students"; $result = mysqli_query($link, $sql) or die(mysql_error()); while($row = mysqli_fetch_array($result, MYSQLI_ASSOC) or die(mysql_error())) { $final = ""; $average = (($row["test1Grade"]) + ($row["test2Grade"]) + ($row["test3Grade"]) + ($row["test4Grade"]) + ($row["finalExamGrade"])) / 5; if ($average >= 90) { $final = "A"; } else if ($average >= 80) { $final = "B"; } else if ($average >= 70) { $final = "C"; } else if ($average >= 60) { $final = "D"; } else if ($average < 60) { $final = "F"; } echo "<tr>"; echo "<td>" . $row["firstName"] . "</td>"; echo "<td>" . $row["lastName"] . "</td>"; echo "<td>" . $row["test1Grade"] . "</td>"; echo "<td>" . $row["test2Grade"] . "</td>"; echo "<td>" . $row["test3Grade"] . "</td>"; echo "<td>" . $row["test4Grade"] . "</td>"; echo "<td>" . $row["finalExamGrade"] . "</td>"; echo "<td>" . round($average) . "</td>"; echo "<td>" . $final . "</td>"; echo "<td><a href='delete.php?id=" . $row['studentID'] . "'>›</a></td>"; echo "<td><a href='update.php?id=" . $row['studentID'] . "'>›</a></td>"; echo "</tr>"; } echo "</table>"; ?> <a href='insert.php'>Add new student</a> </body> </html> Edited by Ch0cu3r, 13 November 2014 - 01:07 PM. Added code tags If i have a list of categories like: 1. Billboards and advertisement section 1(a)City Clock 1(a)(i)Application fee (has columns for approved price and proposed price) 1(a)(ii)Advertisement Per year (has columns for approved price and proposed price) 1(b)Billboards 1(b)(i)Application fee for construction (has columns for approved price and proposed price) 1(b)(ii)Charge per year without advertisement (has columns for approved price and proposed price) 1(c)Something here..... 1(c)(i) something here...(has columns for approved price and proposed price) 1(c)(ii)something here...(has columns for approved price and proposed price) 1(c)(iii) something here... (has columns for approved price and proposed price) e.t.c THEN SOME CATEGORIES LOOK LIKE:category 2 2. Category name 2(a)something here..(has columns for approved price and proposed price) 2(b)something here.. 2(b)(i)something here..(has columns for approved price and proposed price) 2(b)(ii)something here..(has columns for approved price and proposed price) NOW: i have categories without sub categories and others with sub-sub categories , a main category doesn't does have a column for prices ( or lets just say other columns) , a sub category WITHOUT its sub category will have columns for prices, if a sub category has its sub category, then its subcategory should have columns for prices (this is where my problem is - how do i handle such a situation in php Mysql?? ) Hey guys, How can i break just one cycle of a foreach loop. Example: $arr = array('0','1','2'); foreach ($arr as $value){ if($value == 1){ break from this iteration and continue onto next one} echo $value; } So the output should be 02 First of all... this is a GREAT forum. Been lurking around here for a long time and searched all over but still can't find a solution to a problem I'm facing. Here's my cURL code - I am basically retrieving data from a web site: <?php $curl_handle=curl_init(); curl_setopt($curl_handle,CURLOPT_URL,'http://myprimemobile.com/update.html'); curl_setopt($curl_handle,CURLOPT_CONNECTTIMEOUT,2); curl_setopt($curl_handle,CURLOPT_RETURNTRANSFER,1); $buffer = curl_exec($curl_handle); curl_close($curl_handle); if (empty($buffer)) { print "Connection Timeout<p>"; } else { print $buffer; } ?> If you take a look at the site http://myprimemobile.com/update.html -- it will begin to update new information. I want to basically retrieve the data from that page but in my own way. I want to loop through the page and search for all the names, addresses, and phone numbers only (not store hours or anything else), and want to put it in a variable so I can create a table with all that information on my page. Based on the code, all the information is stored in the $buffer variable. I want to break this variable down to extract certain data in a 'div' or a 'table'. Please help me out. Thanks! If I break up this long line of code will it still work correctly? Original... Code: [Select] define('WEB_ROOT', ENVIRONMENT === 'dev' ? 'http://localhost/example.org/' : 'http://example.org/'); Desired... Code: [Select] define('WEB_ROOT', ENVIRONMENT === 'dev' ? 'http://localhost/example.org/' : 'http://example.org/'); Or maybe... Code: [Select] define('WEB_ROOT', ENVIRONMENT === 'dev' ? 'http://localhost/example.org/' : 'http://example.org/'); Debbie Hi guys, So here is the deal. We have a list of brands that excists in a database. There are also images associated with the names. But not all the brands have images. So in the script i read if the file excists. Well this all works fine but it looks horrible. So i want to break the list in half (or limit it to 24). But i cant limit the sql query. Is there a way to "limit" a while loop and let it resume on the same page, just to change the layout (multiple collumns)? (I hope i am clear on this... i confuse even myself) $host = 'localhost'; $user = 'qwerty'; $pass = 'qwerty'; $db = 'qwerty'; $query = "SELECT * FROM ros_brands"; $result = mysql_query($query) or die(mysql_error()); $filename = "/resources/images/mm_files/" . $row['image_file_id'] . ".gif"; while($row = mysql_fetch_array($result)){ $filename = "/var/www/vhosts/test.nl/httpdocs/resources/images/mm_files/" . $row['image_file_id'] . ".gif"; if (file_exists($filename)) { echo "<a href='#'><img src='/resources/images/mm_files/" . $row['image_file_id'] . ".gif' /><span>". $row['name'] ."</span></a>"; } else { // echo "The file $filename does not exist"; } } Hi all, In order to teach myself php I am developing a simple cms system to display my graphic design work. Basically I am working on developing a simple portfolio website powered by a custom made CMS. So far, I can create new posts which are being stored in a MySQL db. My index page runs a sql query to get the latest posts and sorts them by category. Currently the results look like this: Quote Title1 Category A Text Title2 Category A Text Title3 Category B Text Title4 Category B Text The code to generate this looks like this: $content = mysql_query("SELECT * FROM posts ORDER BY category, date DESC"); while($row = mysql_fetch_array($content)) { echo '<h2 class="post_title">'.$row['title'].'</a></h2>'; echo '<p class="cat">category: '.$row['category'].'</p>'; echo '<p class="post_body">'.$row['body'].'</p>'; echo '<p class="image">image: '.$row['image'].'</p>'; echo '<p class="lowerlefttext_metainfo">by <span class="lowerlefttext_author">'.$row['author'].'</span> on '.$row['date'].'</p>'; } What I would like however is this: Category A Title 1 Text Title 2 Text Category B Title 3 Text Title4 Text I am not sure how to do this elegantly without having to code an sql query per category, which I don't think is efficient? Thank you! |