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POFiltering an array retrieved from MySQL after replacing strings
 

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  1. POFiltering an array retrieved from MySQL after replacing strings
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    <p>I've been having a lot of trouble getting this code to work and I was wondering if you guys could take a look at it and maybe see what I'm doing wrong.</p> <p>Here is what I'm trying to do:</p> <p>I have a URL which contains two variables $buildname, and $author.</p> <p>These two variables are inserted into a query for Mysql to retrieve a unique row, where it then fetches an array of information for that row. For example, each row would contain information such as:</p> <p>ID, Author, Buildname, Weapon, Mod1, Mod2 .. Mod 8, Polarity 1, Polarity 2.. Polarity 8, hidden.</p> <p>I then want to check each value, and see if it is equal to a string such as </p> <p>"No mod in this slot"</p> <p>and replace it with</p> <p>""</p> <p>So that I can later use array_filter to get rid of that section of the array.</p> <p>My problem(s) I'm encountering are the following</p> <ol> <li><p>When I fetch the array, and perform a foreach loop which echos each element of the array, it is in duplicate. For example, if I perform</p> <p>foreach($info_array as $string) { echo $string; }</p></li> </ol> <p>I get the results</p> <p>66SteelyDanSteelyDanAcrid BabiesAcrid BabiesAcridAcridNo mod in this slotNo mod in this slotNo mod in this slotNo mod in this slotNo mod in this slotNo mod in this slot</p> <p>Where the ID is 6, the author is SteelyDan, the buildname is Acrid Babies, the first mod is No mod in this slot... and so on.</p> <p>Why is it duplicating like this?</p> <p>Continuing...</p> <p>My code to replace these values "n" (which would appear as a polarity value) and "No mod in this slot" (Which would appear as a mod value) is the following:</p> <pre><code>foreach($info_array as &amp;$string) { if($string == "n") { str_replace("n","","n"); } if($string == "No mod in this slot") { str_replace("No mod in this slot","","No mod in this slot"); } } </code></pre> <p>I would then filter the array to get rid of any empty values.</p> <p>However, this code isn't performing properly.</p> <p>If I echo the array after I run the loop, all values are the same.</p> <p>What the heck am I doing wrong here?? This is my full code:</p> <pre><code> foreach($info_array as $key =&gt; $string) { if($string == "n" || $string == "No mod in this slot") { unset($info_array[$key]); } } $page_id = $info_array['id']; $page_author = $info_array['author']; $page_buildname = $info_array['buildname']; $page_weapon = $info_array['weapon']; $page_mod1 = $info_array['mod1']; $page_mod2 = $info_array['mod2']; $page_mod3 = $info_array['mod3']; $page_mod4 = $info_array['mod4']; $page_mod5 = $info_array['mod5']; $page_mod6 = $info_array['mod6']; $page_mod7 = $info_array['mod7']; $page_mod8 = $info_array['mod8']; $page_polarity1 = $info_array['polarity1']; $page_polarity2 = $info_array['polarity2']; $page_polarity3 = $info_array['polarity3']; $page_polarity4 = $info_array['polarity4']; $page_polarity5 = $info_array['polarity5']; $page_polarity6 = $info_array['polarity6']; $page_polarity7 = $info_array['polarity7']; $page_polarity8 = $info_array['polarity8']; $page_category = $info_array['category']; $page_description = $info_array['description']; $page_date = $info_array['date']; $page_hidden = $info_array['hidden']; //Check if the accessing user is the same as the page creator. If not, check if page is hidden. If page is hidden, redirect to index.php. if($_SESSION['username'] != $page_author) { if($page_hidden == y) { header("Location: index.php"); } } //Retrieve Page Main Image $page_main_image = convertImageMainPageWeapon($page_weapon); //Set up mod and polarity associative arrays $mod_array = array( "image_mod1" =&gt; "$page_mod1", "image_mod2" =&gt; "$page_mod2", "image_mod3" =&gt; "$page_mod3", "image_mod4" =&gt; "$page_mod4", "image_mod5" =&gt; "$page_mod5", "image_mod6" =&gt; "$page_mod6", "image_mod7" =&gt; "$page_mod7", "image_mod8" =&gt; "$page_mod8" ); $polarity_array = array( "image_polarity1" =&gt; "$page_polarity1", "image_polarity2" =&gt; "$page_polarity2", "image_polarity3" =&gt; "$page_polarity3", "image_polarity4" =&gt; "$page_polarity4", "image_polarity5" =&gt; "$page_polarity5", "image_polarity6" =&gt; "$page_polarity6", "image_polarity7" =&gt; "$page_polarity7", "image_polarity8" =&gt; "$page_polarity8" ); foreach($mod_array as &amp;$string) { if($string != "") { $string = convertImageMod($string); } } foreach($polarity_array as &amp;$string) { if($string != "") { $string = convertImagePolarity($string); } } </code></pre> <p>EDIT: Code fixed. The variables are now 'unset' but I receive "undefined index errors"</p> <p>Thanks!</p>
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    1. USSteelyDan
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    1. CO*PSA:* The `mysql_*` functions are [deprecated in PHP 5.5](http://php.net/manual/en/faq.databases.php#faq.databases.mysql.deprecated). It is not recommended for writing new code as it will prevent you from upgrading in the future. Instead, use either [MySQLi](http://php.net/manual/en/book.mysqli.php) or [PDO](http://php.net/manual/en/book.pdo.php) and [be a better PHP Developer](http://jason.pureconcepts.net/2012/08/better-php-developer/).
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      1. POFiltering an array retrieved from MySQL after replacing strings
      1. USJason McCreary
    2. COTry actually using what str_replace returns `$something = str_replace('n','',$string);`
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      1. USAnigel
 

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