Defining Variable Scope : Variable Scope « Language Basics « PHP

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  3. Variable Scope




Defining Variable Scope

 
<?php
$a = 7;
function test() {
  $a = 20;
}
test();
echo "\$a = $a\n";
?>










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5.Variables Defined Outside Functions Are Inaccessible from Within a Function by Default
6.More Working with Variable Scope
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9.Variable Scope in Functions
10.Variable Scope: A Variable Declared Within a Function Is Unavailable Outside the Function