Accessing Values From Object property that is an array

Question

How can I access values from an object property that is an array?

For example:

$myObject = new MyClass;

$myObject->myproperty = array(1 => 'English', 2 => 'French', 3 => 'German');

How can I get individual property values using the array keys from $myObject->mypropery? Using $myObject->myproperty[3] does not work.

EDIT: Using $myObject->myproperty[3] does in fact work. Where I find a problem is when doing it like this:

$myproperty = 'myproperty';

echo $myObject->$myproperty[3]

// result : 'r'

Yet if I do a var_dump on $myObject->$myproperty I see my array.

$myObject->$myProperty will take the value from $myProperty and use it as the property name. So if $myProperty = 'foo';, then it would be the same as saying $myObject->foo. — gahooa
– gahooa, Commented Dec 25, 2012 at 0:23

msangel · Accepted Answer · 2012-12-25 00:21:50Z

1

try this:

$myObject->myproperty[3]

instead of this:

$myObject->$myproperty[3]

answered Dec 25, 2012 at 0:21

msangel

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Billy Over a year ago

Naturally, I already answered that, however this is for a behavior that can apply to a multitude of classes, thus $myObject->$myProperty is essential

PhearOfRayne · Accepted Answer · 2012-12-25 01:17:22Z

0

To access your myproperty array values try this:

$myObject->{$myproperty}[3]

Instead of:

$myObject->$myproperty[3]

These are referred to as Variables Variable, for more information visit: http://php.net/manual/en/language.variables.variable.php

The reason your echo result was r is because your $mypropery value is mypropery and you executed this echo $myObject->$myproperty[3] which translate to saying you want the third character array keys value. Since arrays are zero based this means you will get the character r as a result. Hope this clears up why your result was r.

edited Dec 25, 2012 at 1:17

answered Dec 25, 2012 at 0:27

PhearOfRayne

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1 Comment

Billy Over a year ago

Yes, I understood that's exactly why I was getting 'r'. Your answer is entirely correct. I had tried the same previously, but due to some other logical error it didn't work. Have tried again and it does. Thank you!

goat · Accepted Answer · 2012-12-25 00:27:05Z

0

$tmp = $myObject->$myproperty;
echo $tmp[1];
//or
echo $myObject->{$myproperty}[1];

answered Dec 25, 2012 at 0:27

goat

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