Computer Science Canada unidentified index |
| Author: | compstudent [ Sat Apr 23, 2011 10:29 am ] |
| Post subject: | unidentified index |
Hi, I have this code for ($i = 1; $i<4; $i++) { $game = "game_$i"; $radio = "radio_$i"; $col = $_POST['$radio']; //Error is here $username = $_SESSION['username']; ........ And it goes on to save names in a database. The form that it is from is this: echo "<form id='predict' action='savePredict.php' method='post'>"; for ($i=1; $i<4;$i++) { $gameid = "game_$i"; $name = "radio_$i"; $get = mysql_query("SELECT*FROM $gameid WHERE id='1'"); $rows = mysql_fetch_assoc($get); echo "<div class='game'>"; echo "<label class='team1'>$rows[team1] <input type='radio' name='$name' value='team1'/></label>"; echo "<label class='team2'><input type='radio' name='$name' value='team2'/>$rows[team2] </label><br/>"; $get = mysql_query("SELECT*FROM $gameid WHERE id='2'"); $rows = mysql_fetch_assoc($get); echo "<label class='bet1'>$rows[team1]</label><label class='bet2'>$rows[team2]</label><br/><br/>"; echo "<label class='tie'>Tie<input type='radio' name='$name' value='tie'/> </label><br/>"; echo "</div>"; } I always get the error unidentified index $radio whenever i try to submit data. I don't know too much about radio buttons and using them with $_POST in php - but I can't find where i am going wrong. Thanks |
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| Author: | Amailer [ Sat Apr 23, 2011 3:01 pm ] | ||||
| Post subject: | RE:unidentified index | ||||
should be
Double quotes instead of single quotes. http://www.php.net/manual/en/language.types.string.php#language.types.string.parsing |
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| Author: | compstudent [ Mon Apr 25, 2011 5:16 pm ] |
| Post subject: | Re: unidentified index |
Thanks....Good to know. |
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| Author: | yoursecretninja [ Tue Apr 26, 2011 4:53 pm ] |
| Post subject: | RE:unidentified index |
You only need to put the double quotes when you want to evaluate a variable inside a string. In your example with the key you can ommit the quotes. $col = $_POST[$radio] is just fine. |
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