Minimum maximum value of php array elements by using min and Max function

Array Maximum Minimum value

We can calculate maximum value among the elements of an array by using max function. Here is a simple example.
Maximum value of Array

$ar=array(25,26,47,14,29,58,15);
echo max($ar); // output is 58

Maximum & Minimum value & key of Array

Another example

$ar=array(1=>15,3=>25,4=>13,5=>10);
echo max($ar);// output is 25

Key of the maximum value in array

To get the key of the maximum value of the array we have to use array_keys function.
We can also search for the value and return the key by using array_search()

$ar=array(1=>15,3=>25,4=>13,5=>10);

echo max($ar); // output 25 
echo "<br>";
$b= array_keys($ar,max($ar));
echo $b[0]; // output 3 

echo "<br>"; // using array_search()
$key=array_search(max($ar),$ar);
echo $key; // output 3

We can use this in string arrays also.

$a=array('Welcome',0);
echo max($a); //optput is Welcome

$ar=array('b','k','l','mz','Ma','na');
echo max($ar); // output is na

Min function

We can use min function also in same way to get the minimum value from the array. Here is the example.

$ar=array(25,26,47,14,29,58,15);
echo min($ar);

Example with two max value

<?Php
$value= array(2,5,6,8,9,4,9,1);
echo "Maximum  value = ".max($value);
?>

Output is

Maximum value = 9

Example

Here is an array of students where name of the student is key and mark is stored as value. Collect the highest and lowest mark ( values here ) along with the student names ( keys here ) . Used array_search() to collect the key ( student name )

$student=array('Ron'=>15,'Geek'=>25,'Alex'=>13,'Ravi'=>14);

echo "highest mark : ". max($student); // output 25
echo "<br>";
echo "Student got highest mark:".array_search(max($student),$student);
echo "<br>";
echo "Lowest mark : ". min($student); // output 13
echo "<br>";
echo "Student got Lowest mark:".array_search(min($student),$student);

Output is here.

highest mark : 25
Student got highest mark : Geek
Lowest mark : 13
Student got Lowest mark : Alex

Joining Two Arrays by array_merge
Array REFERENCE

Subhendu Mohapatra

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Passionate about coding and teaching, I publish practical tutorials on PHP, Python, JavaScript, SQL, and web development. My goal is to make learning simple, engaging, and project‑oriented with real examples and source code.