<?php function recursion($a) { if ($a < 20) { echo «$a\n»; recursion($a + 1); } } ?>
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Example , Functions within functions
<?php function foo() { function bar() { echo «I don’t exist until foo() is called.\n»; } } /* We can’t call bar() yet since it doesn’t exist. */ foo(); /* Now we can call bar(), foo()’s processesing has made it accessible. */ bar(); ?>
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