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.

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1) Sum of Digits

Write a PHP program to print sum of digits.
Input: 23
Output: 5
Input: 624
Output: 12

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2) Even or odd number

Input: 23
Output: odd number
Input: 12
Output: even number

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3) Prime number

Write a PHP program to check prime number. Input: 17
Output: not prime number
Input: 57
Output: prime number

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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

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5) Factorial

Write a PHP program to print factorial of a number. Input:
Output: 120
Input: 6
Output: 720

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6) Armstrong number

Write a PHP program to check armstrong number. Input: 371
Output: armstrong
Input: 342
Output: not armstrong

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7) Palindrome number

Write a PHP program to check palindrome number Input: 121
Output: not palindrome number
Input: 113
Output: palindrome number

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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

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9) Reverse Number

Write a PHP program to reverse given number.
Input: 234
Output: 432

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10) Reverse String

Write a PHP program to reverse given string.
Input: amit
Output: tima

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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

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12) Adding Two Numbers Write a PHP program to add two numbers.
First Input:10
Input: 20
Output: 30

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13) Subtracting Two Numbers

Write a PHP program to subtract two numbers.
First Input: 50
Second Input:10
Output: 40

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14) Area of Triangle

Write a PHP program to find area of triangle.
Base Input: 10
Height Input: 15
Output: 75

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15) Area of rectangle

Write a PHP program to find the area of rectangle.
Length Input: 10
Width Input: 20
Output: 200

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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:

18) Number Triangle

Output:

19) Star Triangle

Output:

Output:

Output:

Output: