up vote 8 down vote favorite

The array looks like:

[0] => stdClass Object
        (
            [ID] => 420
            [name] => Mary
         )

[1] => stdClass Object
        (
            [ID] => 10957
            [name] => Blah
         )
...

And I have a integer variable called $v.

How could I select a array entry that has a object where the 'ID' property has the $v value ?

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1 Answer

up vote 19 down vote accepted

You either iterate the array, searching for the particular record (ok in a one time only search) or build a hashmap using another associative array.

For the former, something like this

$item = null;
foreach($array as $struct) {
    if ($v == $struct->ID) {
        $item = $struct;
        break;
    }
}

See this question and subsequent answers for more information on the latter - Reference PHP array by multiple indexes

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setting $item to null is not needed. – dAm2K Sep 30 '12 at 20:06
@dAm2K Not sure what you mean. I'm not setting $item to null anywhere – Phil Oct 1 '12 at 0:17
check your first line of code. – dAm2K Oct 1 '12 at 14:22
1  
Oops, there it is :) That is in case the sought item is not in the array. Alternatively, you could use isset($item) but I prefer initialising variables properly – Phil Oct 1 '12 at 23:41

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