| Author |
some problem to add a mysql field value to an array
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| SAN CAZIANO 2004-12-26, 8:55 am |
| how can i read a mysql table of two fields and test if the first field has a
value then add the second value to an array
I try this but it doesn't works
while ($row=mysql_fetch_array($result))
{
for ($i=0; $i< mysql_num_fields($result); $i++)
if ($row['CampoChiave']=='true')
$TempArray[ ]=$row['NomeCampo'];
}
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| Hilarion 2004-12-26, 8:55 am |
| What is the "for" loop for if you do not use it's index ($i)?
You are testing if CampoChiave has a string value of 'true'.
You wrote that you want to test if it has any value. You
may do it like this:
if (isset($row['CampoChiave']) && ($row['CampoChiave']!=''))
$TempArray[]=$row['NomeCampo'];
Hilarion
PS.: I do not use MySQL, so my suggestions are general PHP related
and may not be sufficient.
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| Oli Filth 2004-12-26, 8:55 am |
| SAN CAZIANO wrote:
> how can i read a mysql table of two fields and test if the first field has a
> value then add the second value to an array
>
> I try this but it doesn't works
>
> while ($row=mysql_fetch_array($result))
> {
> for ($i=0; $i< mysql_num_fields($result); $i++)
> if ($row['CampoChiave']=='true')
> $TempArray[ ]=$row['NomeCampo'];
> }
>
>
Hi,
* Use mysql_fetch_assoc(), not mysql_fetch_array().
* You don't need the for loop that tests agains mysql_num_fields()
* It's generally more efficient if your CampoChiave takes integer values
1 and 0, rather than string values "true" and "false".
So:
===== START PHP CODE =====
while ($row = mysql_fetch_assoc($result))
{
if ($row["CampoChiave"])
{
$TempArray[] = $row["NomeCampo"];
}
}
====== END PHP CODE ======
Hope this helps,
Oli
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