max
FIND the highest value.
Be careful when passing arguments with mixed types values because this function can produce unpredictable results.
If the first and only parameter is an ARRAY, this function returns the highest value in that ARRAY.
If at least two parameters are provided, this function returns the biggest of these values.
Values of different types will be compared using the standard comparison rules.
For instance, a non-numeric STRING will be compared to an integer as though it were 0, but multiple non-numeric STRING values will be compared alphanumerically.
The actual value returned will be of the original type with no conversion applied.
If an empty array is passed, then FALSE will be returned and an E_WARNING error will be emitted.
<?php
mix max ( array $values )
where,
$values = An ARRAY containing the values
?>
$values
The ARRAY containing the values.
<?php
mix max ( mixed $value1 [, mixed $value2, ..., mix valueN ] )
where,
$value1 = The first comparable value
$value2 = The second comparable value
. . . . . . . . . . .
$valueN = The last comparable value
?>
$value1
The first comparable value.
$value2
The second comparable value.
$valueN
The last comparable value.
EXERCISE
<?php
$arr01 = [ 1 => 0.112, 2 => 0.002,
3 => 1.532, 4 => 1, 5 => 2, 6 => 3.0E-6 ];
$max01 = max($arr01);
echo 'ARRAY of values to test:<br><pre>';
print_r($arr01);
echo '</pre><br>The maximum value is ';
var_export($max01);
echo '.';
?>
RESULT
ARRAY of values to test
Array
(
[1] => 0.112
[2] => 0.002
[3] => 1.532
[4] => 1
[5] => 2
[6] => 3.0E-6
)
The maximun value is 2.
EXERCISE
<?php
$arr02a = [ 1 => 0.112, 2 => 0.002,
3 => 1.532, 4 => 1, 5 => 2, 6 => 3.0E-6 ];
$arr02b = [ 3, 6, 9, 12, 15 ];
$max02 = max($arr02a, $arr02b);
echo 'ARRAY of values to test:<br><pre>';
print_r($arr02a);
echo '<br>';
print_r($arr02b);
echo '</pre><br>The maximum value is<br>';
print_r($max02);
echo '.';
?>
RESULT
ARRAY of values to test
Array
(
[1] => 0.112
[2] => 0.002
[3] => 1.532
[4] => 1
[5] => 2
[6] => 3.0E-6
)
Array
(
[0] => 3
[1] => 6
[2] => 9
[3] => 12
[4] => 15
)
The maximum value is
Array ( [1] => 0.112 [2] => 0.002 [3] => 1.532 [4] => 1 [5] => 2 [6] => 3.0E-6 )