What is the symbol for calling class methods in php

In PHP, the symbol for calling class methods is "->"; the "->" symbol is an inserted dereference operator, which is used to call member properties and methods of an object. It is called by a reference. The method of the subroutine that passes parameters, the syntax is "class name->method".

The operating environment of this tutorial: windows10 system, PHP7.1 version, DELL G3 computer

What are the symbols for calling class methods in php

'- >' symbol is the "infix dereference operator". In other words, it is a method that calls a subroutine whose parameters are passed by reference (among other things, of course). As we mentioned above, when calling PHP functions, most parameters are passed by reference. The '->' functions in PHP are just like they are in Perl or C. The following is a simple dereference example:

echo $x->def(); # The output

example is as follows:

First, in a tool Declare a class in the .php file:

<?php
  class tool {
  function say(){
  $result="Hello,World";
  return $result;
  }
}

Call the method in the above class in another file main.php:

<?php
  require_once &#39;tool.php&#39;;
  $tool=new tool();
  $content=$tool->say();
  echo $content;
?>

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