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Using the global Statement to Remember the Value of a Variable Between Function Calls

<html> <head> <title>Using the global Statement to Remember the Value of a Variable Between Function Calls</title> </head> <body> <?php $num_of_calls = 0; function andAnotherThing( $txt ){     global $num_of_calls;     $num_of_calls++;     print "<h1>$num_of_calls. $txt</h1>"; } andAnotherThing("A"); print("Called<p>"); andAnotherThing("B"); print("Called again<p>");  ?> </body> </html>