Write a php program to print prime numbers between 1 to N. In this tutorial, we are going to use Sieve of Eratosthenes algorithm to print prime numbers between 1 to N.
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Category Archives: PHP
PHP Code to Find Second Largest Number in Array
Write a PHP code to find second largest number in array. Given an unsorted array, we have to write a PHP program to find the second largest number in an array.
Apart from solving this problem. We have to focus on time complexity. As the time complexity of an algorithm is very important in terms of how efficient your algorithm is.
Reverse a String in PHP without using strrev() Method
Write a script to reverse a string in PHP without using strrev() method. In PHP, we can reverse a string easily using strrev() method. But think how will you reverse a string without using an inbuilt strrev() method.