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PHP - Serialized Array
What is the point of serializing an array and can some show me an example as to when it should be used?
Similar TutorialsHey all, I'm am stumped. I'm working with someone else's code and I find they are using serialized arrays a lot. unfortunately at present I am not to familiar with serialized arrays and how to work with them and Ive been searching for an answer for a bit but I am not doing so hot in my quest, so I thought I'd come here and give it a crack. From what I gather the person that did this portion of the site I am working on pulled this as is from linkedin. From it I am trying to reconstruct it for the page I am putting into, this information is stored in hundreds of db entries so I cant really redo everything. Is there a direct way of working with this or do I have to covert it to an array or what is the best way to handle data like below, or serialized arrays in general for that matter. Example of what I am looking at: Code: [Select] {"@attributes":{"total":"1"},"position":{"id":"155477330","title":"Lead Architect","summary":{},"start-date":{"year":"2010","month":"10"},"is-current":"true","company":{"id":"209012","name":"Sprint Mobile Inc","type":"Privately Held","industry":"Internet"}}} And another example: Code: [Select] {"@attributes":{"total":"3"},"position":[{"id":"161998487","title":"Senior UX\/UI Designer","summary":"Plan, Design, and Direct User Experience Design\/Development. Also in charge of sharing and spreading the UX philosophy company-wide.","start-date":{"year":"2011","month":"1"},"is-current":"true","company":{"id":"209012","name":"UpMo","type":"Privately Held","industry":"Internet"}},{"id":"149276847","title":"Owner \/ Creative Director","summary":"I'm 27 years old and born and raised in Charleston, South Carolina. \n\nAs a web designer and developer with nearly 14 years of experience, I've always found myself to be interested in business development. I started my first web business when I was 17 years old and watched it grow from a one man operation in a bedroom, to twelve employees working from two office locations. \n\nOver the years I have developed over 200 websites and assisted in the design\/development in as many more.\n\nBeing an entrepreneur, I've developed a sixth sense for quality assurance on web projects -- in other words, if I cannot give it a thumbs up for my own business, why would I give it to you?","start-date":{"year":"2010","month":"6"},"is-current":"true","company":{"id":"1487228","name":"Brandon Rivers Consulting, LLC.","industry":"Internet"}},{"id":"71905623","title":"Chairman \/ Chief Executive Officer","summary":"Brandon is responsible for setting strategy and overseeing the day-to-day business and operations of Campus Rhythm.\n\nIn this position, Brandon\u2019s core responsibility is not only facilitating business outside of Campus Rhythm, but balancing internal and external initiatives to build a sustainable corporation. \n\nCampus Rhythm is the FIRST and ONLY fully automated Student to Student textbook network that allows students all over the country to set their own prices, and be connected to other students to buy and sell textbooks.","start-date":{"year":"2007","month":"10"},"is-current":"true","company":{"name":"Campus Rhythm, LLC.","industry":"Internet"}}]} Ok...working with serialized data is not fun. This is how WordPress does it. I had something working a little, but it wasn't getting all the information I needed. The query below appears to retrieve all the information I need. What I'm trying to do is determine what type of Subscription (s2member_level) a User gets and where they live (county). I eventually want to show the total number of each group, as well as the Usernames (only 18 total right now). The below code SHOULD look like this: Region 1: ## members Region 2: ## members Region 3: ## members Region 4: ## members Region 5: ## members But...right now it just shows Region : 18 members (no number after the region) Code: [Select] $custom = 'SELECT * FROM wp_usermeta um1 INNER JOIN wp_usermeta um2 JOIN wp_users u ON um1.user_id=um2.user_id WHERE um1.meta_key = "wp_s2member_custom_fields" AND um2.meta_value LIKE "%s2member_level%" AND um1.user_id = u.ID GROUP BY um1.user_id'; $c_results = mysql_query($custom); $region = array(); while($line = mysql_fetch_assoc($c_results)) { $meta_value = unserialize($line['um1.meta_value']); $region[$meta_value['county']]++; }; foreach ($region as $key => $value) { echo "Region $key: $value members<br>"; } This is just a sample of the data retrieved for four Users. I used the Inner Join through help on here. Each row shows two entries from the same table. The code above appears to be counting the valid results properly, but it's not dividing them up. So it appears to work down to the "foreach" part. Quote umeta_id user_id meta_key meta_value umeta_id user_id meta_key meta_value 15624 1073 wp_s2member_custom_fields a:1:{s:6:"county";s:1:"1";} 15617 1073 wp_capabilities a:1:{s:15:"s2member_level2";s:1:"1";} 16041 1094 wp_s2member_custom_fields a:1:{s:6:"county";s:1:"3";} 16034 1094 wp_capabilities a:1:{s:15:"s2member_level2";s:1:"1";} 16491 1117 wp_s2member_custom_fields a:1:{s:6:"county";s:1:"2";} 16484 1117 wp_capabilities a:1:{s:15:"s2member_level2";s:1:"1";} 16671 1126 wp_s2member_custom_fields a:1:{s:6:"county";s:1:"3";} 16664 1126 wp_capabilities a:1:{s:15:"s2member_level2";s:1:"1";} I'm teaching myself a bit of OOP in php. found that i could pass an object into the SESSION array if i serialize() the object and then unserialize() it where i need it in other page files. all seems to work well until it comes time for a user to logout from my application and attempt to destroy the session. at times, when they log back in, this serialized SESSION value seems to still be set while other SESSION values have been cleared. at least i *thinnk* this is what is going on.
in my logout handler, i have the following:
$_SESSION = array(); // clear all SESSION vars setcookie(); // clear cookies session_destroy();but the above does not seem to be working. my guess is there is something native to serialized SESSION values that im not yet aware of. any help here would be much appreciated. I had been escaping my arguments before passing to exec(), and then type casting back on the other end. Recently needed to pass an array, and at first planned on json_encode(), but gave serialize/unserialize a try and discovered that it automatically took care of the type casting. The data is coming from me thus I am not (hopefully!) worried about malicious data. Any need to also use escapeshellarg() either before or after serializing? Thanks I'm dealing with data that WordPress creates for Users when they register and subscribe, and to use it for other purposes, I have to wrap my head around serialized data. It's not sinking in well. The below code works well for what I wanted at the time. It takes into consideration where the Subscriber lives (divided up into five areas) and counts how many I have. That is noted by wp_s2member_custom_fields and ANY s2member_level. There are three levels, and I need to actually note how many there are at each Member level. There is another line of data for each user_id meta_key = wp_capabilities meta_value = a:1:{s:15:"s2member_level2";s:1:"1";} Code: [Select] $custom = 'SELECT * FROM wp_usermeta WHERE meta_key = "wp_s2member_custom_fields" AND user_id IN (SELECT user_id FROM wp_usermeta WHERE meta_value LIKE "%s2member_level%")'; $c_results = mysql_query($custom); $region = array(); while($line = mysql_fetch_assoc($c_results)) { $meta_value = unserialize($line['meta_value']); $region[$meta_value['county']]++; }; foreach ($region as $key => $value) { echo "Region $key: $value members<br>"; } This topic has been moved to MySQL Help. http://www.phpfreaks.com/forums/index.php?topic=351561.0 hi i am trying to make a payroll calculator script that takes employee info, calculates pay, displays submitted info in a table, stores info in an array, and updates the array when new info is submitted. i have most of these accomplished, i am having trouble with the "store into an array, and update the array when new info is submitted" parts of the project. i am still not very fluent in php so there may be easier ways to achieve what i have so far. any pointers would be a great help, this part has got me stumped. NOTE - Please read the information first as it contains important information to understand the problem. Rules → • There are 9 Columns(C1,C2,C3,C4,C5,C6,C7,C8,C9) [ Max columns will be 9] • The number of Rows can vary from 3,6,9,12,15,18 (Max). In this case Number of Rows shall be 12 Number of Rows = No of Tickets (Max Allowed 6) x Rows Per Ticket (Max Allowed 3). Thus, Max Rows can be 18 • Each Row is required to have 4 Blank Spaces and 5 Filled with Numbers • All numbers available in the Column Array have to be utilized • This configuration of an shall create a matrix of 9 Columns & 12 Rows (3 x 4 Tickets), which is 108 MATRIX BLOCKS where only a maximum of 60 numbers can be filled out of 108 available blocksrandomly with the above conditions being met 100%. • The numbers in column must be arranged / sorted in ASCENDING ORDER (For coding logic purpose, as soon as the number is assigned to the new MATRIX MAP use array_shift() or unset() the number so as to avoid repetition Example - Row 1 and Column 1 shall generate a MATRIX BLOCK - R1C1 Row 3 and Column 7 shall generate a MATRIX BLOCK - R3C7 Matrix Block can also be termed as Matrix Cell for your ease (if needed) MASTER SET OF ARRAY WITH NUMBERS array( "C1"=> array( 1, 2, 3, 5, 6, 7, 9 ), //7 Numbers "C2"=> array( 13, 14, 15, 17, 18, 19 ), //6 Numbers "C3"=> array( 21, 22, 23, 24, 25, 26, 30 ), //7 Numbers "C4"=> array( 31, 33, 34, 36, 37, 38, 39 ), //7 Numbers "C5"=> array( 41, 42, 46, 47, 48, 49, 50 ), //7 Numbers "C6"=> array( 51, 52, 53, 54, 55, 57, 58 ), //7 Numbers "C7"=> array( 61, 62, 64, 65, 69, 70 ), //6 Numbers "C8"=> array( 71, 74, 75, 76, 77, 78 ), //6 Numbers "C9"=> array( 82, 83, 85, 87, 88, 89, 90 ) //7 Numbers ); The above array has 60 Numbers to be filled out of 108 MATRIX BLOCK / CELL which meets the condition that for a FULL BLOCK containing 4 MINI BLOCKS WITH 3 ROWS (max. allowed) EACH I have been able to generate this without any issue meeting all the conditions of the Columns My Allocation Matrix Array will look like array( "R1"=> array( "C1"=> true, // Means that MATRIX BLOCK R1C1 will be NOT EMPTY "C2"=> false, // Means that MATRIX BLOCK R1C2 will be EMPTY "C3"=> true, "C4"=> false, "C5"=> true, "C6"=> false, "C7"=> true, "C8"=> true, "C9"=> false ), "R2"=> array( "C1"=> false, "C2"=> true, "C3"=> false, "C4"=> true, "C5"=> false, "C6"=> true, "C7"=> true, "C8"=> true, "C9"=> false ), "R3"=> array( "C1"=> true, "C2"=> true, "C3"=> true, "C4"=> true, "C5"=> false, "C6"=> false, "C7"=> false, "C8"=> false, "C9"=> true ), "R4"=> array( "C1"=> true, "C2"=> true, "C3"=> true, "C4"=> false, "C5"=> true, "C6"=> true, "C7"=> false, "C8"=> false, "C9"=> false ), "R5"=> array( "C1"=> false, "C2"=> false, "C3"=> false, "C4"=> false, "C5"=> true, "C6"=> true, "C7"=> true, "C8"=> true, "C9"=> true ), "R6"=> array( "C1"=> true, "C2"=> true, "C3"=> false, "C4"=> true, "C5"=> false, "C6"=> true, "C7"=> false, "C8"=> false, "C9"=> true ), "R7"=> array( "C1"=> false, "C2"=> false, "C3"=> true, "C4"=> false, "C5"=> true, "C6"=> false, "C7"=> true, "C8"=> true, "C9"=> true ), "R8"=> array( "C1"=> true, "C2"=> false, "C3"=> false, "C4"=> true, "C5"=> false, "C6"=> false, "C7"=> true, "C8"=> true, "C9"=> true ), "R9"=> array( "C1"=> true, "C2"=> false, "C3"=> true, "C4"=> false, "C5"=> true, "C6"=> true, "C7"=> false, "C8"=> false, "C9"=> true ), "R10"=> array( "C1"=> false, "C2"=> true, "C3"=> true, "C4"=> true, "C5"=> true, "C6"=> false, "C7"=> true, "C8"=> false, "C9"=> false ), "R11"=> array( "C1"=> false, "C2"=> true, "C3"=> false, "C4"=> true, "C5"=> true, "C6"=> true, "C7"=> false, "C8"=> true, "C9"=> false ), "R12"=> array( "C1"=> true, "C2"=> false, "C3"=> true, "C4"=> true, "C5"=> false, "C6"=> true, "C7"=> false, "C8"=> false, "C9"=> true ) ); In the above array R stands for Row, C for Column, TRUE/FALSE (Boolean) means that if TRUE a Number can be filled in the resulting MATRIX BLOCK / CELL ( Row[Number]Column[Number] ) else if FALSE the MATRIX BLOCK / CELL shall be EMPTY The result for the above shall be
PROBLEM : I am unable to understand what should possibly be the logic & loop used here for creating a MATRIX ALLOCATION MAP as shown above I have tried while, foreach & for but unable determine the perfect combination which would meet the conditions. (Tried all of the above with Nested Loops also) Edited May 1, 2020 by AlphaMikeTags Using curl_multi, I have loaded up 3 url's and then printed the array. 1) How can I also set a timestamp on output to let me know when each url was run? 2) How can I explode the array to only display the data and timestamp, excluding the text "Array ( =>", "[1] =>", "[2] =>" and " )"? Code <?php function multiRequest($data, $options = array()) { // array of curl handles $curly = array(); // data to be returned $result = array(); // multi handle $mh = curl_multi_init(); // loop through $data and create curl handles // then add them to the multi-handle foreach ($data as $id => $d) { $curly[$id] = curl_init(); $url = (is_array($d) && !empty($d['url'])) ? $d['url'] : $d; curl_setopt($curly[$id], CURLOPT_URL, $url); curl_setopt($curly[$id], CURLOPT_HEADER, 0); curl_setopt($curly[$id], CURLOPT_RETURNTRANSFER, 1); // post? if (is_array($d)) { if (!empty($d['post'])) { curl_setopt($curly[$id], CURLOPT_POST, 1); curl_setopt($curly[$id], CURLOPT_POSTFIELDS, $d['post']); } } // extra options? if (!empty($options)) { curl_setopt_array($curly[$id], $options); } curl_multi_add_handle($mh, $curly[$id]); } // execute the handles $running = null; do { curl_multi_exec($mh, $running); } while($running > 0); // get content and remove handles foreach($curly as $id => $c) { $result[$id] = curl_multi_getcontent($c); curl_multi_remove_handle($mh, $c); } // all done curl_multi_close($mh); return $result; } $data = array(array(),array()); $data[0]['url'] = 'http://search.yahooapis.com/VideoSearchService/V1/videoSearch?appid=YahooDemo&query=Pearl+Jam&output=json'; $data[1]['url'] = 'http://search.yahooapis.com/VideoSearchService/V1/videoSearch?appid=YahooDemo&query=Black+Eyed+Peas&output=json'; $data[2]['url'] = 'http://search.yahooapis.com/VideoSearchService/V1/videoSearch?appid=YahooDemo&query=Nirvana&output=json'; $r = multiRequest($data); print_r($r); ?> Output Array ( => Pearl Jam [1] => Black Eyed Peas [2] => Nirvana ) Preferred Output 01:00:01 Pearl Jam 01:00:02 Black Eyed Peas 01:00:03 Nirvana I am having some problems getting a query correct. Basically I have two tables, one with listings and another with categories. In the listings table I have a column called shortdescription. I am trying to pull the shortdescription from the listings table with the query $shortdesc = array_shift(mysql_fetch_row(mysql_query("select shortdescription from links where category = '".$scat->id."' "))); The shortdecription display properly on the pages display the listings, however I am getting the following error on any pages that only display the parent categories Warning: array_shift() [function.array-shift]: The argument should be an array in /home/...path/file.php on line 1462 The listings id numbers begin at 75+ because the initial parent category id ends at 74. The query seems to be searching for listing ids below 75 and spitting out an error because it is not finding them. Any ideas on how to eliminate this error and/or stop the query from looking for non-existant data? How can i save array from inputs, witch is $igraci and it have 5 values, to mysql base, i tryed but in mysql it shows Array. This is form: <form action="dodaj_klan.php" method="post" > <p> <label>Naziv klana:</label> <input name="naziv" type="text" size="20%" /> <label>Web Sajt:</label> <input name="website" type="text" size="20%" /> <label>E-Mail:</label> <input name="email" type="text" size="20%" /> <br /><br /> <label>Igraci klana(5):</label> <input name="lider" type="radio" value="1" /> <input name="igraci[]" type="text" size="20%" /><br /> <input name="lider" type="radio" value="2" /> <input name="igraci[]" type="text" size="20%" /><br /> <input name="lider" type="radio" value="3" /> <input name="igraci[]" type="text" size="20%" /><br /> <input name="lider" type="radio" value="4" /> <input name="igraci[]" type="text" size="20%" /><br /> <input name="lider" type="radio" value="5" /> <input name="igraci[]" type="text" size="20%" /> <label><i>(obelezi lidera klana)</i></label> <br /><br /> <input class="button" type="submit" name="submit" value="Dodaj" /> </p> </form> Now i wonna save this igraci[] array in mysql, i tried like this but it doesn't work: $igraci = $_POST['igraci']; $query = "INSERT INTO klanovi (naziv, website, email, igraci) VALUES ('{$naziv}', '{$website}', '{$email}', '{$igraci}')"; $result = mysql_query($query, $connection); How can i do this? Thanks.. This topic has been moved to PHP Applications. http://www.phpfreaks.com/forums/index.php?topic=344127.0 Hello all, I have yet again trouble finding a logical solution to my problem. I'm fetching an array which can hold 1 or more values. The problem is, I want these values to ouput in my json_encode function, but this also needs to happen dynamically depending on the amount of values. I can't explain it further, so here's the code so far: Code: (php) [Select] $files = mysql_fetch_array($get_files); $a = count($files); $i = 1; while ($files) { $variablename = 'fileName' . $i; $$variablename = $files['fileName']; $i++; } $output = array( OTHER VALUES , 'fileName1' => $fileName1, 'fileName2' => $fileName2, 'fileName3' => $fileName3, ............); // How do I add the fileNames dynamically depending on how many there are? This got me thinking, I also need to dynamically GET the values with jQuery. How would I do that, when the above eventually works? Thank you. I need a help in the following : I have an admin page from where the admin attaches an gif image.This attached image should be shown to the user as a scrolling image. The code for the scrolling image is done through javascript. So my actual problem is getting the name of the attached gif image to the javascript array which is used for scrolling horizontally. So I'm trying to create an Array from a comma separated string containing array{s}. How can I take a string full of comma separated hex values such as : <?php $myStr = ( "00ffff", "00cccc", "009999", "007777", "004444", "001111", "01ffff", "01cccc", "019999" ); ?> & turn it into 3 separated arrays like : <?php $myNewArrs = [ Array1 ( 3 ), Array2 ( 3 ), Array3 ( 3 ), ]; ?> which REALLY looks like :
<?php
$myNewArrs = [
Array ( "00ffff", "00cccc", "009999" ),
Array ( "007777", "004444", "001111" ),
Array ( "01ffff", "01cccc", "019999" ),
];
?>
? Thank you & have a great afternoon!
Edited May 27 by AquariaXI 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 mysql select query shown below retrieving data from a database:
$sql = "
SELECT
student, sum( test_score ) as score
FROM
test
INNER JOIN
level
ON
test.level_id = level.level_id
GROUP BY
student"
$result = $mysqli->query($sql, MYSQLI_STORE_RESULT);
if($result)
{
while ($row = $result->fetch_array(MYSQLI_ASSOC))
{
var_dump($row);
}
}
On inspection of the retrieved array with var_dump(), i have these result below:
array (size=2) 'John' => string 'English' (length=2) 'Score' => string '20' (length=3) array (size=2) 'Mary' => string 'Math' (length=3) 'Score' => string '35' (length=3) array (size=2) 'Samuel' => string 'Physics' (length=3) 'Score' => string '5' (length=3)How do I get at and print out the highest score from this set of array values within this context. I tried this echo max($row['count']) but i understandably got this feedback: Warning: max(): When only one parameter is given, it must be an array Thanks. Hi, I'm trying to explode an array into a multidimensional array using <br /> tags as splitters but just can't get the syntax right! I can do lines of the array one by one, but not the whole lot at once. I'd really appreciate a quick example of an explode inside an array. $myarray looks something like this with print_r: ( [0] => [1] => some_html<br />some_html<br />some_html<br /> [2] => some_html<br />some_html<br />some_html<br /> [3] => some_html<br />some_html<br />some_html<br /> ) and I want to turn it into this: ( [0] => [1] => [0]some_html [1]some_html [2]some_html [2] => [0]some_html [1]some_html [2]some_html [3] => [0]some_html [1]some_html [2]some_html ) I've tried this $myarray = explode ("<br />", $myarray); but it doesn't work … It doesn't matter too much if there's are a few empty lines in the array from the final <br /> tags. Many thanks, as ever, for any help. I am retrieving values in form of array from a database table and out of the I have to build multidimensional array depending upon the parent->child relationship in the same array. The result is as => Array ( => Array ( [label] => Shirt [uri] => # ) [1] => Array ( [label] => Jeans [uri] => # ) [2] => Array ( [label] => Lowers [uri] => # ) [3] => Array ( [label] => T-Shirts [uri] => # ) [4] => Array ( [label] => cotton shirt [uri] => # ) [5] => Array ( [label] => Trousers [uri] => # ) ) each is related to some parent-id. Can any body me any idea. I have an array created to control the down states of the my buttons in my navigation. Which is working well. This array will have quite a few strings in it before I'm done. I then want to conditionally load a CSS file for all the files in that array with the exception of two, is this possible? In plain in english I want to say If in array apart from these values then load my css file. My array (will have more values when complete) Code: [Select] $otherTitles = array('Product Selector', 'Avon Range', 'Knightsbridge Range', 'Kingston Range' ); My code to load a css file Code: [Select] <?php if (in_array($title, $otherTitles)) { ?> <link rel="stylesheet" type="text/css" href="homepage.css"/> <?php } ?> I want all titles in the otherTitles array to get this CSS file apart from two Product Selector and Avon Range. Thanks Richard |
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