PHP - Get values from Array

I am trying to retrieve a value from an Array. Here is the code:

$opt=get_records_sql($sql1);

print_object($opt);

$n = count($opt);
if (empty($opt))
echo 'No options selected';

else
$optno = $opt["subjectid"];
echo '<br>$optno = '.$optno;



I tried to use: $opt["subjectid"] but I get the following error:

$opt["subjectid"]

Notice: Undefined index: subjectid


Contents of array:

Array
(
[1] => stdClass Object
(
[uname] => JHollands06
[tutor] => M LSt
[subjectid] => 1
[year] => 2010
[optid] => 1
)

)


How to I fetch the data subjectid which has value 1?

3 Answers
3

Method 1: Convert the object to an array by casting it.

$opt[1] = (array) $opt[1];
echo $opt[1]['subjectid'];


To convert all objects in an array (if there are more than one):

foreach ($opt as $k => $val)
$opt[$k] = (array) $val;



Method 2: Simply call it as an object like it is already assigned.

echo $opt[1]->subjectid


There is a difference between an array and an object. An object contains variables that have to be called using the '->' and an array contains values which are associated with a specific key. As your output states, you have an array containing an stdClass object, not another array.

$opt is an array of rows. So you'd do something like this:

foreach($opt as $row)

echo $row['subjectid'];



Or just use an index:

$opt[0]['subjectid'];


Your array contains rows. It's not just one row. So you need to index it by row first.

edit: your rows are objects, my bad. So it should be

$opt[1]->subjectid

$opt[1]->subjectid

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