| Function | Description |
|---|---|
abs($n) | Absolute value |
round($n,$dec) | Round |
floor($n) | Round down |
ceil($n) | Round up |
max($a,$b,...) | Maximum |
min($a,$b,...) | Minimum |
rand($min,$max) | Random int |
sqrt($n) | Square root |
pow($base,$exp) | Power |
pi() | π value |
<?php
echo abs(-42); // 42
echo round(3.567, 2); // 3.57
echo floor(4.9); // 4
echo ceil(4.1); // 5
echo max(3, 7, 1, 9); // 9
echo min(3, 7, 1, 9); // 1
echo rand(1, 100); // random 1-100
echo sqrt(144); // 12
echo pow(2, 10); // 1024
echo number_format(1234567.89, 2, ".", ","); // 1,234,567.89
?>