php round() function

&lt;?php
echo&nbsp;'Rounding&nbsp;modes&nbsp;with&nbsp;9.5'&nbsp;.&nbsp;PHP_EOL;
var_dump(round(9.5,&nbsp;0,&nbsp;PHP_ROUND_HALF_UP));
var_dump(round(9.5,&nbsp;0,&nbsp;PHP_ROUND_HALF_DOWN));
var_dump(round(9.5,&nbsp;0,&nbsp;PHP_ROUND_HALF_EVEN));
var_dump(round(9.5,&nbsp;0,&nbsp;PHP_ROUND_HALF_ODD));

echo&nbsp;'Rounding&nbsp;modes&nbsp;with&nbsp;8.5'&nbsp;.&nbsp;PHP_EOL;
var_dump(round(8.5,&nbsp;0,&nbsp;PHP_ROUND_HALF_UP));
var_dump(round(8.5,&nbsp;0,&nbsp;PHP_ROUND_HALF_DOWN));
var_dump(round(8.5,&nbsp;0,&nbsp;PHP_ROUND_HALF_EVEN));
var_dump(round(8.5,&nbsp;0,&nbsp;PHP_ROUND_HALF_ODD));
?&gt;

echo&nbsp;ceil(4.3);&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;5
echo&nbsp;ceil(9.999);&nbsp;&nbsp;//&nbsp;10
echo&nbsp;ceil(-3.14);&nbsp;&nbsp;//&nbsp;-3

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php round() function

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