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<?php
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$num=153;
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$sum=0;
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$temp=$num;
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while($temp!=0)
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{
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$rem=$temp%10;
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$sum=$sum+$rem*$rem*$rem;
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$temp=$temp/10;
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}
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if($num==$sum)
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{
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echo "Armstrong number";
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}
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else
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{
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echo "not an armstrong number";
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}
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?>
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/*
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Output
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Armstrong number
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