how add admin menu in wordress plug in admin sidebar
php best practice programming example with globle keyword <?php $a = 0; $b = 2; function s() { global $a; $a += 1 ; return $a; } function m() { global $a; $a -= 1 ; return $a; } s(); m(); s(); s(); s(); s(); s(); s(); m(); echo $a; ?>
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