Multidimensional associated array

[Kurda Yon]

Hi,

I try to construct an array such that each element of it is another
array returned by the fetch_array_fun ction:

for ( $i = 1; $i<=$n; $i++ )
{
$ar[$i] = mysql_fetch_arr ay( $result );
print "$ar[$i][fieldname]\n";
}

It prints "Array[fieldname]".

If I replace $ar[$i] by $ar everything works fine! Could you pleas
help me with that?

[Jerry Stuckle]

Re: Multidimensiona l associated array

Kurda Yon wrote:

Hi,
>
I try to construct an array such that each element of it is another
array returned by the fetch_array_fun ction:
>
for ( $i = 1; $i<=$n; $i++ )
{
$ar[$i] = mysql_fetch_arr ay( $result );
print "$ar[$i][fieldname]\n";
}
>
It prints "Array[fieldname]".
>
If I replace $ar[$i] by $ar everything works fine! Could you pleas
help me with that?
>

print $ar[$i]['fieldname'] . "\n";
or
print "{$ar[$i]['fieldname']\n";

[fieldname] will give you an E_NOTICE if enabled (and it should be on
your development system).

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Norman Peelman]

Re: Multidimensiona l associated array

Jerry Stuckle wrote:

Kurda Yon wrote:

>Hi,
>>
>I try to construct an array such that each element of it is another
>array returned by the fetch_array_fun ction:
>>
>for ( $i = 1; $i<=$n; $i++ )
>{
>$ar[$i] = mysql_fetch_arr ay( $result );
>print "$ar[$i][fieldname]\n";
>}
>>
>It prints "Array[fieldname]".
>>
>If I replace $ar[$i] by $ar everything works fine! Could you pleas
>help me with that?
>>

>
print $ar[$i]['fieldname'] . "\n";
or
print "{$ar[$i]['fieldname']}\n";
>
[fieldname] will give you an E_NOTICE if enabled (and it should be on
your development system).
>

A notice is not thrown in this case because the key is already within
double quotes. The problem is fixed by the necessity to use { }'s when
using multi-dimensional arrays within double quotes. I normally use this
method. To get PHP to throw a NOTICE, remove the single quotes from your
second example.

--
Norman
Registered Linux user #461062

[Peter Pei]

Re: Multidimensiona l associated array

print_r will show you the internals

[Peter Pei]

Re: Multidimensiona l associated array

no point for you to control the index yourself
<?php
$a[] = 2;
$a[] = 3;
$a[] = 5;
print $a;
print_r($a);
?>

[Peter Pei]

Re: Multidimensiona l associated array

<?php
$a = array(array("a" =>1, "b"=>2));
print "{$a[0]['b']}";
?>

[Peter Pei]

Re: Multidimensiona l associated array

you obviously forgot to close your }

[Peter Pei]

Re: Multidimensiona l associated array

<?php
$a = array(array("a" =>1, "b"=>2));
print "{$a[0][b]}";
?>
this gives you notice,

[Peter Pei]

Re: Multidimensiona l associated array

php ends the variable name at the most convenience spot

[Norman Peelman]

Re: Multidimensiona l associated array

Peter Pei wrote:

<?php
$a = array(array("a" =>1, "b"=>2));
print "{$a[0][b]}";
?>
this gives you notice,

Yes, that's what I said. When using multi-dimensional arrays within
double-quoted strings you must use the { }'s... and when you use the {
}'s you must use single quotes around the key names. PHP does not search
for CONSTANTS within double-quoted strings, there is a very specific
reason for it.


--
Norman
Registered Linux user #461062