what is the meaning of a symbol
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check out this link for more information: http://php.net/manual/en/language.oop5.properties.php
the short of it is they are used to interact with properties and functions within an object or class.
-> Symbol is used to access an object's property. Example if i have a user object that contains the property "name", "age". To access them i can do $user->name, $user->age.
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