how to create matrix in PHP with data from mysql (2)? - php

Question

I have this code:
function random()
{
include('config/koneksi.php');
$result = mysql_query("select * from temp_hasil");
$n =mysql_num_rows(mysql_query("SELECT * FROM temp_hasil"));
for ($i = 1; $i <= $n; $i++)
{
for ($j = 1; $j <= $n; $j++)
{
$rows = mysql_fetch_array($result);
$this->table[$i][$j] = $i == $j ? INF : $rows['id'];
}
}
}
function __toString()
{
$str = '<table class="table table-bordered" id="tableInput"> <tbody>';
$str .= '<tr><td></td>';
foreach ($this->table as $rowName => $row)
{
$str .= "<td>$rowName</td>";
}
$str .= '</tr>';
foreach ($this->table as $rowName => $row)
{
$str .= "<tr><td>$rowName</td>";
foreach ($row as $columnName => $value)
{
$str .= "<td>";
$str .=
'<input class="form-control" type="text" value="' . $value . '" name="table[' . $rowName . '][' .
$columnName . ']" requied' . ($columnName == $rowName ? ' disabled' : '') . '>';
$str .= "</td>";
}
$str .= '</tr>';
}
$str .= '</tbody></table>';
return $str;
}
}
$str .= '</tr>';
foreach ($this->table as $rowName => $row)
{
$str .= "<tr><td>$rowName</td>";
foreach ($row as $columnName => $value)
{
$str .= "<td>";
$str .=
'<input class="form-control" type="text" value="' . $value . '" name="table[' . $rowName . '][' .
$columnName . ']" requied' . ($columnName == $rowName ? ' disabled' : '') . '>';
$str .= "</td>";
}
$str .= '</tr>';
}
$str .= '</tbody></table>';
return $str;
}`
and I have table "temp_hasil" such as:
id_temp | id |
1 | 8 |
2 | 5 |
3 | 7 |
If I run this code, it result :
1 2 3
1 | INF | 5 | 7 |
2 | | INF| |
3 | | | INF|
But I want end result such as:
1 2 3
1 | INF | 5 | 7 |
2 | 8 | INF| 7 |
3 | 8 | 5 | INF|
How do I code it in php? Is there anything wrong code? Thanks,... :)

Answer 1

Problem is - You can only fetch complete results once and can't get the first record in second loop. So instead, store the results in an array and use the array to create matrix.
This should work. Try this.
function random()
{
include('config/koneksi.php');
$result = mysql_query("select * from temp_hasil");
$n =mysql_num_rows(mysql_query("SELECT * FROM temp_hasil"));
$r=array();
for ($a = 1; $a <= $n; $a++)
{
$rows = mysql_fetch_array($result);
$r[]=$rows['id'];
}
for ($i = 1; $i <= $n; $i++)
{
for ($j = 1; $j <= $n; $j++)
{
$this->table[$i][$j] = $i == $j ? INF : $r[$j-1];
}
}
}
Simply, you can use a while loop and store to array and then use array sizeof($r) or count($r) in for loop. Which ever you prefer.
function random()
{
include('config/koneksi.php');
$result = mysql_query("select * from temp_hasil");
$r=array();
while($rows = mysql_fetch_array($result)) {
$r[]=$rows['id'];
}
for ($i = 1; $i <= sizeof($r); $i++)
{
for ($j = 1; $j <= sizeof($r); $j++)
{
$this->table[$i][$j] = $i == $j ? INF : $r[$j-1];
}
}
}