How to unite 3 files in one table? - php

Question

I have a test script, that generate txt file with answers. And have 2 txt files with the correct answers. I want:
1) Unite all files in one table, like:
<table>
<tr>
<td>№ of question</td>
<td>data from file 1</td>
<td>data from file 2</td>
<td>data from file 3</td>
</tr>
...
</table>
2) I want to replace id in this files on text from DB (MySQL). I have table with question and answers with similar id (like in txt files).
All files have structure like:
1|3
2|4
3|1
where first number - is id of a question, and second is a variant of answer.
I start coding, but don't know how to include data from files:
// Slect from DB
$qsel=mysql_query("SELECT `qid`, `qtext` from `questions` ORDER BY `qid`");
// Open file 1
$key1=fopen("data/test_1_key1.txt", "r");
$k1=explode("/r/n", $key1);
// Open file 2
$key2=fopen("data/test_1_key2.txt", "r");
$k2=explode("/r/n", $key2);
$rtable='<table border="1" cellspacing="0" cellpadding="3">
<tr>
<th width="40%">Q</th>
<th width="20%">A 1</th>
<th width="20%">A 2</th>
<th width="20%">NAME</th>
</tr>';
while($q=mysql_fetch_row($qsel))
{
$rtable.='<tr><td><b>'.$q['1'].'</b></td>';
$rtable.='<td>data from file 1</td>';
$rtable.='<td>data from file 2</td>';
$rtable.='<td></td>';
}
echo '</table>'.$rtable;

Answer 1

I would first fetch the textfiles and convert it into indexed array:
$tmp1 = file('text1.txt');
$data1 = array();
foeach($tmp1 as $line)
{
list($key1, $val1) = explode("|", $line);
$data1[$key1] = $val1;
}
and then, on mysql fetch loop, just use the indexed array:
while($q=mysql_fetch_row($qsel))
{
$rtable.='<tr><td><b>'.$q['1'].'</b></td>';
$rtable.='<td>' . ( isset( $data1[ $q['0'] ] ) ? $data1[ $q['0'] ] : '' ) . '</td>';
$rtable.='<td>data from file 2</td>';
$rtable.='<td></td>';
}