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function test()
{
global $aa;
echo $aa;
}
test(); //print test
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$aa="test"
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{
echo $aa;
}
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for($a =1;$a<=9;$a++)
{
for($b =1;$b<=$a;$b++)
{$c =$a *$b;
echo "$a*$b=$c ";
}
echo "<p>";
}
?> ......