I dont understand the function of these characters -> in this code:


the function "getImageInfo()" populates the variable "$var".

I can use the print_r function to display all values but how do I get a specific value

echo "<pre>";
echo "</pre>";


    [resolutionUnit] => 0
    [fileName] => 1.jpg
    [fileSize] => 30368 bytes

how do I get "fileSize" for instance?

Accepted Answer

In your example, $var->getImageInfo(), the variable $var is an instance (also called an object) of a class. The function getImageInfo() is known as a class method. This is part of Object Oriented Programming, also called OOP. You can learn more about this here - http://php.net/manual/en/language.oop5.php

If you want to get a particular member of the array that you listed, you can simply do:

$image_info = $var->getImageInfo();
echo $image_info['fileSize'];
Written by Charles Hooper
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