Php biggest in array

Php biggest in array

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Php biggest in array

Description

Alternative signature (not supported with named arguments):

If the first and only parameter is an array, max() returns the highest value in that array. If at least two parameters are provided, max() returns the biggest of these values.

Note:

Values of different types will be compared using the standard comparison rules. For instance, a non-numeric string will be compared to an int 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.

Be careful when passing arguments of different types because max() can produce unpredictable results.

Parameters

An array containing the values.

Return Values

max() returns the parameter value considered «highest» according to standard comparisons. If multiple values of different types evaluate as equal (e.g. 0 and ‘abc’ ) the first provided to the function will be returned.

Errors/Exceptions

If an empty array is passed, max() throws a ValueError .

Changelog

Version	Description
8.0.0	max() throws a ValueError on failure now; previously, false was returned and an E_WARNING error was emitted.

Examples

Example #1 Example uses of max()

echo max ( 2 , 3 , 1 , 6 , 7 ); // 7
echo max (array( 2 , 4 , 5 )); // 5

// The string ‘hello’ when compared to an int is treated as 0
// Since the two values are equal, the order they are provided determines the result
echo max ( 0 , ‘hello’ ); // 0
echo max ( ‘hello’ , 0 ); // hello

// Here we are comparing -1 < 0, so 'hello' is the highest value
echo max ( ‘hello’ , — 1 ); // hello

// With multiple arrays of different lengths, max returns the longest
$val = max (array( 2 , 2 , 2 ), array( 1 , 1 , 1 , 1 )); // array(1, 1, 1, 1)

// Multiple arrays of the same length are compared from left to right
// so in our example: 2 == 2, but 5 > 4
$val = max (array( 2 , 4 , 8 ), array( 2 , 5 , 1 )); // array(2, 5, 1)

// If both an array and non-array are given, the array will be returned
// as comparisons treat arrays as greater than any other value
$val = max ( ‘string’ , array( 2 , 5 , 7 ), 42 ); // array(2, 5, 7)

// If one argument is NULL or a boolean, it will be compared against
// other values using the rule FALSE < TRUE regardless of the other types involved
// In the below example, -10 is treated as TRUE in the comparison
$val = max (- 10 , FALSE ); // -10

// 0, on the other hand, is treated as FALSE, so is «lower than» TRUE
$val = max ( 0 , TRUE ); // TRUE
?>

See Also

User Contributed Notes 19 notes

The simplest way to get around the fact that max() won’t give the key is array_search:

$student_grades = array ( «john» => 100 , «sarah» => 90 , «anne» => 100 );
$top_student = array_search ( max ( $student_grades ), $student_grades ); // john
?>

This could also be done with array_flip, though overwriting will mean that it gets the last max value rather than the first:

$grades_index = array_flip ( $student_grades );
$top_student = $grades_index [ max ( $student_grades )]; // anne
?>

To get all the max value keys:

$top_students = array_keys ( $student_grades , max ( $student_grades )); // john, anne
?>

echo max ( 0 , ‘hello’ );
?>

Before PHP 8.0 will return int(0) but since PHP 8.0 above code returns string(«hello»)!!

max() (and min()) on DateTime objects compares them like dates (with timezone info) and returns DateTime object.
$dt1 = new DateTime ( ‘2014-05-07 18:53’ , new DateTimeZone ( ‘Europe/Kiev’ ));
$dt2 = new DateTime ( ‘2014-05-07 16:53’ , new DateTimeZone ( ‘UTC’ ));
echo max ( $dt1 , $dt2 )-> format ( DateTime :: RFC3339 ) . PHP_EOL ; // 2014-05-07T16:53:00+00:00
echo min ( $dt1 , $dt2 )-> format ( DateTime :: RFC3339 ) . PHP_EOL ; // 2014-05-07T18:53:00+03:00
?>

It works at least 5.3.3-7+squeeze17

Note that max() can compare dates, so if you write something like this:

$dates = array( ‘2009-02-15’ , ‘2009-03-15’ );
echo max ( $dates );
?>

you will get: 2009-03-15.

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PHP Get Max Value From Array | PHP Tutorial

PHP get the max/maximum/largest value from array. This tutorial has the purpose to explain to you several easy ways to find or get the maximum or largest value from an array in PHP.

Here, we will take e.g. PHP gets the maximum value in an array, get the largest number in the array PHP without a function or get the max value from an array in PHP using for loop

PHP find the highest value in an array

To get the maximum value from an array in PHP, you can use the max() function. This function takes an array as its parameter and returns the maximum value in the array.

PHP max() function

The max() function is inbuilt PHP function, which is used to find the numerically maximum or highest value in an array or find maximum or highest value of given specified values.

Syntax

max(array) or max(value1, value2, value3 … valueN)

Example – 1 Get max value in array PHP using max() function

Let’s take the first example, we will use the PHP max() function to find the maximum value in the array. Let’s see the example below:

The output of the above program is: 100

Example 2 – Find largest number in array php without function

Let’s take the second example, in this example, we will find or get the largest or maximum number in array PHP without function. Let’s see the example below:

The output of the above program is: 1000

Example – 3 PHP get max or highest value in array using for loop

Let’s take the third example, to find the maximum or largest or highest value in array PHP without using any function. Let’s look at the examples below:

Example – 4 PHP get max or highest value in array using array reduce

We can also use the array_reduce() function to find the maximum value in an array. Here’s an example:

$numbers = array(1, 5, 3, 8, 2); $max = array_reduce($numbers, function($a, $b) < return $a >$b ? $a : $b; >); echo $max; // Output: 8

In this example, we use the array_reduce() function to iterate over the array and find the maximum value. The function passed as the second parameter to array_reduce() compares two values at a time and returns the larger of the two. The array_reduce() function returns the maximum value, which is then assigned to the $max variable. Finally, we use the echo statement to print the value of $max .

Conclusion

Through this tutorial, we have learned how to find or get max value or elements from array in PHP.

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max — Возвращает наибольшее значение

Если в качестве единственного аргумента передан массив, max() вернет значение наибольшее значение из этого массива. Если передано 2 или более аргумента, функция max() вернет наибольший из них.

Замечание:

Значения разных типов сравниваются с использованием стандартных правил сравнения. Например, не числовая строка ( string ) будет сравниваться с целым числом ( integer ) как будто она равна 0, но несколько строк ( string ) будут сравниваться по алфавиту. Возвращаемое значение сохранит первоначальный тип переменной, без преобразования.

Список параметров

Любое поддающееся сравнению значение.

Любое поддающееся сравнению значение.

Любое поддающееся сравнению значение.

Возвращаемые значения

Функция max() возвращает значение того параметра, который считается «самым большим» согласно стандартным правилам сравнения. Если несколько значений разного типа равны между собой (т.е. 0 и ‘abc’), то будет возвращен первый из них.

Примеры

Пример #1 Пример использования max()

echo max ( 2 , 3 , 1 , 6 , 7 ); // 7
echo max (array( 2 , 4 , 5 )); // 5

// Строка ‘hello’, при сравнении с int, рассматривается как 0
// Так как оба значения равны, то порядок параметров определяет результат
echo max ( 0 , ‘hello’ ); // 0
echo max ( ‘hello’ , 0 ); // hello

// При сравнении массивов разной длины, max вернет более длинный
$val = max (array( 2 , 2 , 2 ), array( 1 , 1 , 1 , 1 )); // array(1, 1, 1, 1)

// Несколько массивов одинаковой длины сравниваются слева направо
// для этого примера: 2 == 2, но 5 > 4
$val = max (array( 2 , 4 , 8 ), array( 2 , 5 , 1 )); // array(2, 5, 1)

// Если сравниваются массив и не-массив, то массив всегда будет возвращен
// так как массивы считаются большими чем все остальные значения
$val = max ( ‘string’ , array( 2 , 5 , 7 ), 42 ); // array(2, 5, 7)

// Если один аргумент является NULL или булевым, то он будет сравниваться с остальными
// с использованием правило FALSE < TRUE, учитывая остальные типы аргументов
// В приведенном примере -10 рассматривается как TRUE
$val = max (- 10 , FALSE ); // -10
$val = max (- 10 , FALSE ); // -10

// с другой стороны, 0 рассматривается как FALSE, поэтому это «меньше» чем TRUE
$val = max ( 0 , TRUE ); // TRUE
?>

Смотрите также

• min() — Находит наименьшее значение
• count() — Подсчитывает количество элементов массива или что-то в объекте

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