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POPHP table creation with 1 array manipulating through array indexes
 

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    <p>I have this database:</p> <pre> +----+------------+------------+-----------+----------+---------+------+-----------------+----------+------------+ | id | reservedby | date | timestart | duration | endtime | cost | details | status | dateadded | +----+------------+------------+-----------+----------+---------+------+-----------------+----------+------------+ | 1 | enerva | 09/29/2013 | 9-10am | 3 | 11-12pm | 1500 | basketball dre! | pending | 0000-00-00 | | 2 | mangkanor | 09/30/2013 | 9-10am | 8 | 5-6pm | 4000 | Sabong Dre! | approved | 0000-00-00 | +----+------------+------------+-----------+----------+---------+------+-----------------+----------+------------+ </pre> <p>I'm using it in my table:</p> <p><img src="https://i.imgur.com/4pTuVVL.jpg" alt=""></p> <p>As you can see, the 9-10am slot is reserved by enerva; the duration for that hour is 3, meaning '3 hours', so the endtime will be 11-12pm. However, in my table, I can't incorporate the <code>'Not Available, taken by: enerva'</code> string on 10-11am and 11-12pm.</p> <p>Here's my code:</p> <pre><code>&lt;?php if (isset($_GET['checkdate'])) { $date = urldecode($_GET['date']); echo "&lt;br/&gt;&lt;br/&gt;&lt;h3&gt;Reservations&lt;/h3&gt;"; echo $date; $timearray = array("8-9am","9-10am","10-11am","11-12pm","12-1pm","1-2pm","2-3pm","3-4pm","4-5pm","5-6pm","6-7pm","7-8pm","8-9pm","9-10pm","10-11pm"); $tablecolor = 1; echo "&lt;table style='width: 90%;'&gt;"; echo "&lt;tr&gt;"; echo "&lt;th&gt;"; echo "Time"; echo "&lt;/th&gt;"; echo "&lt;th&gt;"; echo "Status"; echo "&lt;/th&gt;"; echo "&lt;/tr&gt;"; foreach ($timearray as $timearrays) { if($tablecolor %2 == 0) { echo "&lt;tr&gt;"; } else { echo "&lt;tr style='background-color: rgb(0,100,255); background: rgb(0,100,255);'&gt;"; } echo "&lt;th&gt;"; echo "&lt;h3&gt;$timearrays&lt;/h3&gt;"; echo "&lt;/th&gt;"; echo "&lt;td&gt;"; $sql = "SELECT * FROM reservation WHERE date = '$date' AND timestart = '$timearrays'"; $result = mysql_query($sql); if(mysql_num_rows($result) == 0){ echo "&lt;a href='#'&gt;&lt;h3 style='color: rgb(255,0,0);'&gt;Reserve&lt;/h3&gt;&lt;/a&gt;"; } else { while($row = mysql_fetch_array($result)) { $reservedby = $row['reservedby']; } echo "&lt;h3&gt;Not Available, taken by: $reservedby.&lt;/h3&gt;"; } echo "&lt;/td&gt;"; echo "&lt;/tr&gt;"; $tablecolor++; } echo "&lt;/table&gt;"; } ?&gt; </code></pre> <p>I'm guessing that I must use a counter for the duration and decrement it toward zero on each iteration of the loop. Whilst the counter is non-zero, the table will display the <code>'not available, reserved by: enerva'</code> string; once it reaches zero, it will display the <code>'reserve'</code> link. But I couldn't find a way to do it.</p> <p>Is there any way, or any other way to do it? Shall I look to the <code>indexof</code> arrays and find the difference between the 2 indexes of starttime and endtime?</p>
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    1. USKay Singian
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    1. COMay I suggest that you use temporal data types for your `date`, `timestart`, `duration` and `endtime` columns? Indeed, the former two should probably be combined into a single column; and it is superfluous to keep both of the latter two.
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      1. USeggyal
    2. COOne big question: is it possible to have different reservations at the same time?
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      1. USSylvain
    3. COYou certainly need some refactoring here. As an addition to what @eggyal said it's highly inefficient to query DB for every hour. Query and save to array (which is effectively can be used as hashtable) all needed DB rows at once and then, during creating your <tr></tr>, check if array contains an appropriate entry.
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      1. USkasitan
 

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