php global variable function

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Loris
31 Apr 2017
1<?php
2  $myVariable = "a";
3  function changeVar($newVar) {
4    global $myVariable
5    $myVariable = "b";
6  }
7  echo $myVariable; // Should echo b
8?>
Domenico
22 Oct 2016
1$a = 1;
2$b = 2;
3function Sum(){
4    global $a, $b; // allows access to vars outside of function
5    $b = $a + $b;
6} 
7
8Sum();
9echo $b; // output is 3
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