note 97931 added to function.array-search

<?php> /*Linear approximation for a square root*/ $squares; function sq_root($num) { global $squares; for($i=0; $i<25; $i++) { $squares[$i] = $i * $i; } $near = nearestSquare($num); $near_root = array_search($near, $squares); if( $num == $near ) return $near_root; else $delta = $num - $near; $sq_root = $near_root + $delta/(2*$near_root); return $sq_root; } function nearestSquare($num) { global $squares; $i = 0; while($num >= $squares[$i]) { $i++; } if( ($num - $squares[$i-1]) < ($squares[$i] - $num)) return $squares[$i-1]; else return $squares[$i]; } $n = 66; echo "square root of " . $n . " is approximately " . sq_root($n); ?> output: 8.125 ---- Server IP: 69.147.83.197 Probable Submitter: 184.34.5.90 ---- Manual Page -- http://www.php.net/manual/en/function.array-search.php Edit -- https://master.php.net/note/edit/97931 Del: integrated -- https://master.php.net/note/delete/97931/integrated Del: useless -- https://master.php.net/note/delete/97931/useless Del: bad code -- https://master.php.net/note/delete/97931/bad+code Del: spam -- https://master.php.net/note/delete/97931/spam Del: non-english -- https://master.php.net/note/delete/97931/non-english Del: in docs -- https://master.php.net/note/delete/97931/in+docs Del: other reasons-- https://master.php.net/note/delete/97931 Reject -- https://master.php.net/note/reject/97931 Search -- https://master.php.net/manage/user-notes.php