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42 lines
1.0 KiB
PHP
42 lines
1.0 KiB
PHP
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<?php
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##Functions for pgm3
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function LogRotate($array,$file,$logrotatelines)
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{
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$counter=count($array);
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$filename=$file;
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if (!$handle = fopen($filename, "w")) {
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print "Logrotate: cannot open $filename -- correct rights??";
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exit;
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}
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for ($x = $counter-$logrotatelines; $x < $counter; $x++)
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{fwrite($handle, $array[$x]);};
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fclose($handle);
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}
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function bft($windspeed) # wind speed in Beaufort
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{
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if($windspeed>= 118.5) { $bft= 12; }
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elseif($windspeed>= 103.7) { $bft= 11; }
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elseif($windspeed>= 88.9) { $bft= 10; }
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elseif($windspeed>= 75.9) { $bft= 9; }
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elseif($windspeed>= 63.0) { $bft= 8; }
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elseif($windspeed>= 51.9) { $bft= 7; }
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elseif($windspeed>= 40.7) { $bft= 6; }
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elseif($windspeed>= 29.6) { $bft= 5; }
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elseif($windspeed>= 20.4) { $bft= 4; }
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elseif($windspeed>= 13.0) { $bft= 3; }
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elseif($windspeed>= 7.4) { $bft= 2; }
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elseif($windspeed>= 1.9) { $bft= 1; }
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else $bft= 0;
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return($bft);
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}
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?>
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