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@ 2014-07-03T10:27:45Z

<?php

$a = 1009.1;

for($a = .5; $a < 20; $a = $a + 0.5){

	echo $a . " = " . number_format(round($a,-1)) . " <br> " ;

}

Output
Performance
VLD
References
Branches

round: documentation ( source)
number_format: documentation ( source)

preferences:dark modelive preview

51.88 ms | 402 KiB | 5 Q