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re-added exidently removed swap method
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@ -1414,4 +1414,17 @@
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return implode(', ',$labels);
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}
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};
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/**
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* swap the values of $a and $b
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*
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* @param mixed &$a
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* @param mixed &$b
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*/
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function swap(&$a,&$b)
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{
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$h = $a;
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$a = $b;
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$b = $h;
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}
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}
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