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Reference — What does this symbol mean in PHP? 18 answers

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Below link will provide you a full list of symbols and their usage.

Reference - What does this symbol mean in PHP?

Since you have asked, In short

=> is called T_DOUBLE_ARROW and is the separator for associative arrays, the '=>' created key/value pairs.

-> is called "object operator" or T_OBJECT_OPERATOR and it's used when you want to call a method on an instance or access an instance property.

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As chandresh said but with examples:

=> is for associative arrays. You would do such:

$arr = array("key" => "value"); // now value can be access simply by typing $arr['key'];

-> is for accessing object properties(variables) and methods(functions)

// instead of doing this:
calculate();

// if you have created an object, you could access the method(function) like so:

$object->calculate();  // to call method(function) inside a classobject

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One is a scope resolution operator and the other is an array control method to define Keys/values

What's the difference between :: (double colon) and -> (arrow) in PHP? For the -> syntax and:

What does "=>" mean in PHP? for the => syntax

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