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@ 2014-08-04T03:45:44Z

<?php

$input='46.9';
$floor=floor($input);
$tens=round($input,-1);
echo $floor." ".$tens;

$array = array(
    '0',
    '20'  => '0-20',
    '50'  => '20-50',
    '100' => '50-100',
    '200' => '100-200',
    '500' => '200-500',
);
print_r($array);

Output
Performance
VLD
References
Branches

round: documentation ( source)
print_r: documentation ( source)
floor: documentation ( source)

preferences:dark modelive preview

37.19 ms | 402 KiB | 5 Q