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PHP - Writing And Reading An Associative Array To File
I am creating a poll with a form using check boxes. The resulting associative array is evaluated and 1 is to be added to values selected. I have that part down. I want to write the associative array to a file and the next time someone uses the form the values are read from the file, values added and then write it back to a file. I thought it would be better to do it like this rather than query a db, add values, etc. Any ideas on how to do this? This is the array I want to start with:
Code: [Select] $vetservice = array( "Korea"=>0, "Vietnam"=>0, "Grenada"=>0, "Cold War"=>0, "Panama"=>0, "Desert Storm"=>0, "Mogadishu"=>0, "OEF"=>0, "OIF"=>0 ); Values from the post array would be added to the starting value and wrote back to a text file. Similar TutorialsThis topic has been moved to Third Party PHP Scripts. http://www.phpfreaks.com/forums/index.php?topic=346993.0 i have this script where the user enters their name and their favorite quotes. It adds their favorite quotes and their names to quotes.txt and prints out their name and their quotes on view_quote.php. I need to use a foreach() loop to print out the name and the quotes, but I'm confused about how to set it up. Here's my files. add_quote.php Code: [Select] <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>Add A Quotation</title> </head> <body> <?php // add_quote.php /* This script displays and handles an HTML form. This script takes text input and stores it in a text file. */ // Identify the file to use: $file = 'quotes.txt'; // Check for a form submission: if ($_SERVER['REQUEST_METHOD'] == 'POST') { // Handle the form. if ( !empty($_POST['quote']) && ($_POST['quote'] != 'Enter your quotation here.' ) ){ // Need some thing to write. if (is_writable($file)) { // Confirm that the file is writable. file_put_contents($file, $_POST['quote'] . PHP_EOL, FILE_APPEND | LOCK_EX); // Write the data. file_put_contents($file, $_POST['name'] . PHP_EOL, FILE_APPEND | LOCK_EX); // Print a message: print '<p>Your quotation has been stored.</p>'; } else { // Could not open the file. print '<p style="color: red;">Your quotation could not be stored due to a system error.</p>'; } } else { // Failed to enter a quotation. print '<p style="color: red;">Please enter a quotation!</p>'; } } // End of submitted IF. // Leave PHP and display the form: ?> <form action="add_quote.php" method="post"> <p>Name:<input type="text" name="name"/><br /> <textarea name="quote" rows="5" cols="30">Enter your quotation here.</textarea><br /> <input type="submit" name="submit" value="Add This Quote!" /> </form> </body> </html>view_quote.php Code: [Select] <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>View A Quotation</title> </head> <body> <h1>View My Quotes</h1> <?php // view_quote.php /* This script displays and handles an HTML form. This script reads in a file and prints a random line from it. */ // Read the file's contents into an array: $data = file('quotes.txt'); // Count the number of items in the array: $n = count($data); // Pick a random item: $rand = rand(0, ($n - 1)); // Print the quotation: print '<p>' . trim($data[$rand]) . '</p>'; ?> </body> </html>and the quotes.txt file is blank until the user enters their names and quotes. Im trying to get this done kind of quick so any help would be awesome. Ok I need to write an array to a file here is the code if($place[2] < 10){ echo "Account Invalid"; $account = var_dump($account_data[$i][0]); echo $account; $fp3=fopen('invalid.txt', 'a+'); fwrite($fp3, $account); fclose($fp3);} when I try if($place[2] < 10){ echo "Account Invalid"; $account = var_dump($account_data[$i][0]); echo $account; $fp3=fopen('invalid.txt', 'a+'); fwrite($fp3, $account_data[$i][0]); fclose($fp3);} I just get "Array[1]" written to the file.. What can I do to write the array to the file? Thanks <?php $file = 'test.txt'; $lastfm = file_get_contents('http://www.last.fm/group/Rishloo/members'); preg_match_all('/id="r4_([\d]+)">/', $lastfm, $matches); file_put_contents($file, $matches[1]); sleep(100000); ?> That puts the array in a file but I need each value on a new line but it bunches it all up.. this just puts "Array" in file [php] <?php $file = 'test.txt'; $lastfm = file_get_contents('http://www.last.fm/group/Rishloo/members'); preg_match_all('/id="r4_([\d]+)">/', $lastfm, $matches); file_put_contents($file, $matches[1]."\n"); sleep(100000); ?> what do I need to do to print all of the values on a new line? Thanks I am trying to print out rows of images and pieces them to form a bigger map but having a little trouble printing out correctly. I am doing the following... A numbered text file with rows of numbers like these: 33.txt Code: [Select] 48,48,49,49,48,47,48,49,48,50,50,48,50,49,48,49,49,49 49,11,4,8,50,11,4,4,8,48,11,4,4,8,48,11,8,50 ... The number represent different area and the number in the text file represent each individual pieces of that particular area. the number of rows and columns are arbitrary. Example: Here is my code at the moment but there is something wrong in it as I can't seems to correctly print everything out... Code: [Select] <?php $file = file_get_contents("33.txt"); // can be any numbered text files $entries = explode("\n", $file); echo "Entries <br /><hr />"; for($i=0;$i < sizeof($entries);$i++){ for($j=0;$j < sizeof($entries);$j++){ $data = explode(",", $entries[$j]); echo "<td align=\"center\" background=\"test/33_"; echo $data[$j]; echo ".gif\" width=\"65\" height=\"65\"> <table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"65\" height=\"65\"> <tbody><tr> <td> <center></center> </td> </tr></tbody> </table> </td>"; } } ?> I'm trying to process MS words doc in PHP. I found some samples which use COM applications for this but not working properly (I get only exceptions and no result) and I taught it's the version of word on my localhost or my OS so I tried them on with different windows OS and MS word. but same result, since it would be harder to make it work on remote server (the remote server needs to have MS word installed on) so I'm looking for different approach, what you think?? is there nay good one rather than COM applications? have you ever tried? is it possible to write code with other like ASP or java and combine it with PHP? every little piece of advice would be appropriated, thanks Is this possible? Could the following code be replaced with one .txt consisting of two digits? Code: [Select] $myFile = "offerrotation.txt"; $myFile2 = "lprotation.txt"; $fh = @fopen($myFile, 'r'); $offerNumber = @fread($fh, 5); @fclose($fh); $fh = @fopen($myFile2, 'r'); $lpNumber = @fread($fh, 5); @fclose($fh); Many thanks Hey, I'm trying to work out how I can have a simple script that will work like this: Page 1 - Heading, Paragraph, Image read from database. Page 2 - Has text boxes allowing you to change heading, paragraph and image (url) with each edit using a different text box. (Admin panel) The database connection would be in a separate file. So far I've got the database connection sorted. Code: [Select] <?php //Database Information $dbtype = "mysql"; $db_host = "localhost"; $db_user = ""; $db_pass = ""; $db_name = ""; $db_port = ""; $db_table_prefix = "userCake_"; ?> At the top of each of the other pages this is what I've got. Code: [Select] <?php require_once("models/config.php"); ?> Let's say I give each bit stored in the database a page ID and an object ID. If the page selected is index.php how can we give it a page ID of 1 and give then include all the separate 'objects' throughout the page? Hopefully this makes sense? Cheers, Jack Hi
I come from a desktop (vb.net) background and have used oridinary text files for my databases. I use file locking to prevent other processes from writing to the same file simultaneously.
Now I am moving over the PHP/MySQL - what precautions should I take to stop a simultaneous processes from writing to a table at the same time.?
Do I need to lock the table before writing to it?
Does MySQL deal with this automatically and just block my process until the table becomes free?
(I am talking about a single table here, not multiple dependant tables - I know that is another issue)
Thanks
Nigel
Hi there, Basic question, but I can't seem to find a page in the PHP docs that answers (though I'm sure such a one exists, I just can't seem to think up the right search terms - anyway) My question is: is there a short-hand way to use a value from an associative array as the key in another associative array? So for example, given this array: $the_array = array(0 => array('name': 'the_name', 'value' : 'the_value'), 1 => etc....); then this kind of foreach loop doesn't work Code: [Select] $new_data = array(); foreach($the_array as $element){ $new_data[$element['name']] = $element['value']; } Obviously I can just save out the values, like $name = $element['name'] --- but I was just wondering if there was a more efficient way to do it? Cheers, PS. I tried encapsulating with {} - i.e. $new_data[{$element['name']}] --- but that also fails. I have a associative array and I need to compare it to a normal array. Code: [Select] associative will have anywhere from 2-8 of these ['name'] ['color'] ['uid'] Code: [Select] normal array will have anywhere from 1-8 names ['name'] What I need to do is get the name of the people that are in the associative array that are not in the normal array. I've tried all sorts of different loops and what not and I cant seam to get anything to work in every case. Hello, I am not sure if you can help me or if this is the place but... I am running linux and php5.3.6 I am having problems that I did not experience on my Windows box and it has to do with arrays if ($answer['correct']) { (which contains 1 or 0) is throwing Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING removing the quotes works but just curious why it is not working and if there is a setting i can change Also $answers[] = $answer[id]; is throwing Parse error: syntax error, unexpected ']', expecting T_STRING or T_VARIABLE or T_NUM_STRING Thank you to anyone who might be able to help. I WANT HELP WITH ASSOCIATIVE ARRAY THERE IS ARRAY LIKE THIS $ARRAY= array( 'dd'=>1, 'dde'=>233, 'qww'=2231 ) i want to store this array in database which data type i should i use want to use mixed data mixed string-numeric type which data type is suitable and i want to print indexes only but values only what should i do Hi guys. I have an associative array called $VisitorCountryID $VisitorCountryID = filter_countries(array('Country' => $_SESSION['UserCountryName'])); and the function filter_countries() returns all the information relating to the visitors country from the database. To find out what we have in the array, we do: print_r($VisitorCountryID); and it gives us: Array ( [14] => Array ( [CountryId] => 14 [Country] => Australia [FIPS104] => AS [ISO2] => AU [ISO3] => AUS [ISON] => 36 [Internet] => AU [Capital] => Canberra [Comment] => ISO includes Ashmore and Cartier Islands,Coral Sea Islands [sortOrder] => 1 ) ) Which is OK. Now i just want the CountryId which you can see in the array is 14 therefore I write: print_r($VisitorCountryID['CountryId']); Which should give me 14 but it return blank no output. I am surprised. What do you think is missing here. Any response / feedback always welcomed! Cheers! Hello all!! I need help with an associative array I've been working on. I'm not sure if I should have typed the weekday in the index because I'm supposed to use the getdate() function to pull the day of the week into the array. I'm also supposed to use string functions to pull apart the value where it's connected with the colon ":". I've tried using explode() and strtok but I don't quite understand how they work...just like the getdate()..I don't understand. Thanks for any 'nudge' in the right direction you can offer. Code: [Select] <?php $title = "Associative Array"; $heading = "Daily Specials"; $specials = array( "Sunday" =>"52in Flat Screen TV:425.00", "Monday" =>"Amplifier:145.00", "Tuesday" =>"HP Computer:355.00", "Wednesday" =>"500GB External Harddrive:99.00", "Thursday" =>"Internal Speakers:55.00", "Friday" =>"Ergonomic Keyboard:85.00", "Saturday" =>"Wacom Tablet:175.00", ); echo "<html> <head> <title> $title </title> </head> <body> <h1> $heading </h1> <pre>\n"; //prints left and right aligned headers with 30 spaces printf ("%-30s%30s\n", "Items", "Price"); printf ("%'-60s\n", ""); foreach ($specials as $key=>$value); { //prints the key left aligned and the value right aligned //formats to two decimals spaces printf ("%-20s%20.2f\n", $key, $value); echo " </pre>\n"; $delimeter=":"; $inventory=strtok($inventory,$delimeter); while(is_string($inventory)) { if($inventory) { echo " $inventory\n"; } $inventory=strtok($delimiter); } $inventory=explode($delimeter,$inventory); foreach ($items as $item=>$price) { echo" $item, $price\n"; } echo " </pre>\n"; "</body> </html>\n"; ?> <HTML> <?php $arr = array("sue" => "betsy", "frank" => "marge"); ?> </HTML> This produces the following HTML page: "betsy", "frank" => "marge"); Its like when I use the => to make my associative array, the code thinks I'm closing the php codeblock and then just prints the rest of it to the screen... i have problem to get the sum from the associative array. i have to get sum for the 3 result that being display from the array
rsort($sub); }
I'm scraping a housing website with html source: Code: [Select] <tr><td> </td><td> Bedrooms </td><td> </td><td >3</td><td> </td></tr> <tr><td> </td><td> Full Baths </td><td> </td><td >1</td><td> </td></tr> <tr><td> </td><td> Partial Baths </td><td> </td><td >1</td><td> </td></tr> <tr><td> </td><td> Interior Sq Ft </td><td> </td><td >1,356</td><td> </td></tr> <tr><td> </td><td> Acres </td><td> </td><td >0.16</td><td> </td></tr> What i'm trying to do is create an associative array with only the details I want from the above. I've already got a function that steps through the HTML and creates an array element for each row with the contents of each <td> statement as follows: Code: [Select] $repl = array(" ", "(", ")"); $repl_with = array("", "", ""); foreach ($rows_feat as $id2 => $row2){ $features_raw = $scrape->fetchAllBetween('<td','</td>',$row2,true); //$features_data[str_replace($repl,$repl_with,strtolower(trim($features_raw[1])))] = trim($features_raw[3]); $countid=$countid+1; } The array produced by this would look like: features_raw[1] = Bedrooms features_raw[3] = 1 Basically, I want to take data like this: Beds 1 Baths 1 Garage Yes and create an array on the fly: House[beds]=1 House[baths]=1 House[garage]="yes" The problem is that the order of Beds, Baths and Garage changes. So on some house pages the order would be Baths, Garage, Beds.. etc. Any pointers out there? Thanks, Brett Hi guys, I'm really struggling trying toremove duplicates from an associative array. I've tried array_unique but it doesn't work. Can you point me in the right direction please? I'm populating my array using the following code Code: [Select] foreach($category['manufacturers'] as $manufacturer) { list($name, $id) = explode("|", $manufacturer); $brands[] = array("id" => $id, "name" => $name); } If the array contains: id = 1, name = brandA id = 2, name = brandB id = 1, name = brandA I'd like to remove either the first or third entry. I always struggle with associative arrays i need some help sorting my arrays. i have a class that selects data from database, and holds it inside a class to be used multiple times. rather then executing multiple queries. i know how to sort an array. but i am sorting arrays inside an array $data = arrray( array( 'id'=>1, '_name'=>'Server A', '_date_added'=>1298207645.5424, ); array( 'id'=>2, '_name'=>'Server B', '_date_added'=>1298247384.4839, ); array( 'id'=>3, '_name'=>'Server C', '_date_added'=>1298218493.0493, ); ); i want to sort my array descending by key _date_added hope you understand... |
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