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Variable with global scope:

Variable x inside function is:

Variable x outside function is: 5

<?php
$x = 5; // global scope
 
function myTest() {
  // using x inside this function will generate an error
  echo "<p>Variable x inside function is: $x</p>";
} 
myTest();

// this works
echo "<p>Variable x outside function is: $x</p>";
?>