RETURNS the floating point remainder of the division of the arguments.
Compatible with LOCALE only, up to PHP 7.4.XX.
<?php
float fmod ( float $num1 , float $num2 )
where,
$num1 = The dividend
$num2 = The divisor
?>
EXERCISE
<?php
$x01a = mt_rand(30, 42);
$y01a = mt_rand(1, 30);
$mod01a = fmod($x01a, $y01a);
echo $x01a . ' divided by ' . $y01a .
' produces a remainder of ' . $mod01a . '<br><br>';
$mod01b = $x01a%$y01a;
echo 'The same result as ( ' . $x01a . '%' . $y01a . ' ) = ' .
$mod01b . '<br><br><br>';
$quoc01a = intdiv($x01a, $y01a);
echo 'If intdiv ( ' . $x01a . ', ' . $y01a . ' ) = ' . $quoc01a;
echo '<br><br>then ' . $x01a .
' = ( ' . $y01a . ' * ' . $quoc01a . ' ) + ' . $mod01a . '<br>';
?>
EXERCISE
<?php
setlocale(LC_ALL, "fr_FR.utf-8", "fr", "fr-FR");
$x02a = 88.9986;
$y02a = 52.132;
$mod02a = fmod($x02a, $y02a);
echo $x02a . ' divided by ' . $y02a .
' produces a remainder of ' . $mod02a . '<br><br>';
$quoc02a = intdiv($x02a,$y02a);
echo 'If intdiv( ' . $x02a . ',' . $y02a . ' ) ≈ ' . $quoc02a;
echo '<br><br>then ' . $x02a . ' ≈ ( ' .
$y02a . ' * ' . $quoc02a . ' ) + ' . $mod02a . '<br>';
?>
EXERCISE
<?php
$values1 = [234,
-234,
23.45e1,
-23.45e1,
0xEA,
0352,
"234",
"234.5",
"23.45e1",
null,
true,
false ];
$values2 = [2,
-2,
2.3e1,
-2.3e1,
0x2,
02,
"2",
"2.3",
"2.3e1",
null,
true,
false ];
for ($i = 0; $i < count($values1); $i++) {
echo "<br><br>Iteration: ", $i, "<br>";
for ($j = 0; $j < count($values2); $j++) {
$res = fmod($values1[$i], $values2[$j]);
var_dump($res);
}
}
?>
EXERCISE
<?php
if (PHP_INT_SIZE != 8)
die("skip this test is for 64bit platform only");
define("MAX_64Bit", 9223372036854775807);
define("MAX_32Bit", 2147483647);
define("MIN_64Bit", -9223372036854775807 - 1);
define("MIN_32Bit", -2147483647 - 1);
$longVals = array(
MAX_64Bit, MIN_64Bit, MAX_32Bit,
MIN_32Bit, MAX_64Bit - MAX_32Bit,
MIN_64Bit - MIN_32Bit,
MAX_32Bit + 1, MIN_32Bit - 1,
MAX_32Bit * 2, (MAX_32Bit * 2) + 1,
(MAX_32Bit * 2) - 1,
MAX_64Bit -1, MAX_64Bit + 1,
MIN_64Bit + 1, MIN_64Bit - 1
);
$otherVals = array(0, 1, -1, 7, 9, 65, -44,
MAX_32Bit, MIN_32Bit, MAX_64Bit, MIN_64Bit);
foreach ($longVals as $longVal) {
foreach($otherVals as $otherVal) {
echo "<br><br>Testing: $longVal, $otherVal<br>";
var_dump(fmod($longVal, $otherVal));
}
}
?>