﻿ PHP Programs, 1) Sum of Digits,2) Even or odd number,3) Prime number,4) Table of number,5) Factorial,6) Armstrong number,7) Palindrome number,8) Fibonacci Series,9) Reverse Number,10) Reverse String,11) Swap two numbers,12) Adding Two Numbers,13) Subtracting Two Numbers,14) Area of Triangle,15) Area of rectangle,16) Leap Year,17) Alphabet Triangle using PHP method,18) Alphabet Triangle Pattern,19) Number Triangle,20) Star Triangle, | Online Tutorials Library | Tutorialsinfo.com

# PHP Programs

PHP programs are frequently asked in the interview. These programs can be asked from basics, control statements, array, string, oops, file handling etc. Let's see the list of top PHP programs.

## 1) Sum of Digits

Write a PHP program to print sum of digits.

Input: 23

Output: 5

Input: 624

Output: 12

## 2) Even or odd number

Input: 23

Output: odd number

Input: 12

Output: even number

## 3) Prime number

Write a PHP program to check prime number.

Input: 17

Output: not prime number

Input: 57

Output: prime number

## 4) Table of number

Write a PHP program to print table of a number.

Input: 2

Output: 2 4 6 8 10 12 14 16 18 20

Input: 5

Output: 5 10 15 20 25 30 35 40 45 50

## 5) Factorial

Write a PHP program to print factorial of a number.

Input: 5

Output: 120

Input: 6

Output: 720

## 6) Armstrong number

Write a PHP program to check armstrong number.

Input: 371

Output: armstrong

Input: 342

Output: not armstrong

## 7) Palindrome number

Write a PHP program to check palindrome number.

Input: 121

Output: not palindrome number

Input: 113

Output: palindrome number

## 8) Fibonacci Series

Write a PHP program to print fibonacci series without using recursion and using recursion.

Input: 10

Output: 0 1 1 2 3 5 8 13 21 34

## 9) Reverse Number

Write a PHP program to reverse given number.

Input: 234

Output: 432

## 10) Reverse String

Write a PHP program to reverse given string.

Input: amit

Output: tima

## 11) Swap two numbers

Write a PHP program to swap two numbers with and without using third variable.

Input: a=5 b=10

Output: a=10 b=5

## 12) Adding Two Numbers

Write a PHP program to add two numbers.

First Input: 10

Second Input: 20

Output: 30

## 13) Subtracting Two Numbers

Write a PHP program to subtract two numbers.

First Input: 50

Second Input: 10

Output: 40

## 14) Area of Triangle

Write a PHP program to find area of triangle.

Base Input: 10

Height Input: 15

Output: 75

## 15) Area of rectangle

Write a PHP program to find the area of rectangle.

Length Input: 10

Width Input: 20

Output: 200

## 16) Leap Year

Write a PHP program to find if the given year is leap year or not.

Input: 2000

Output: Leap Year

Input: 2001

Output: Not Leap Year

## 17) Alphabet Triangle using PHP method

Write a PHP program to print alphabet triangle.

Output:

```     A
ABA
ABCBA
ABCDCBA
ABCDEDCBA
```

## 18) Alphabet Triangle Pattern

Write a PHP program to print alphabet triangle.

Output:

```     A
ABA
ABCBA
ABCDCBA
ABCDEDCBA
```

## 19) Number Triangle

Write a PHP program to print number triangle.

Output:

```enter the range= 6
1
121
12321
1234321
123454321
12345654321
```

## 20) Star Triangle

Write a PHP programs to print star triangle.

Output:

Output:

Output:

Output:

Output:

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