PHP for loop - Exercises, Practice, Solution
This resource offers a total of 190 PHP for loop problems for practice. It includes 38 main exercises, each accompanied by solutions, detailed explanations, and four related problems.
[An Editor is available at the bottom of the page to write and execute the scripts.]
1. Number Sequence Display
Create a script that displays 1-2-3-4-5-6-7-8-9-10 on one line. There will be no hyphen(-) at starting and ending position.
2. Sum Integers 0 to 30
Create a script using a for loop to add all the integers between 0 and 30 and display the total.
3. Construct Incremental Star Pattern
Create a script to construct the following pattern, using nested for loop.
* * * * * * * * * * * * * * *
4. Construct Symmetric Star Pattern
Create a script to construct the following pattern, using a nested for loop.
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
5. Factorial Calculation
Write a program to calculate and print the factorial of a number using a for loop. The factorial of a number is the product of all integers up to and including that number, so the factorial of 4 is 4*3*2*1= 24.
6. Two-Digit Decimal Combinations
Write a program which will give you all of the potential combinations of a two-digit decimal combination, printed in a comma delimited format :
Sample output :
00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99,
7. Count "r" Characters in a String
Write a program which will count the "r" characters in the text "w3resource".
8. Create Multiplication Table with For Loops
Write a PHP script that creates the following table using for loops. Add cellpadding="3px" and cellspacing="0px" to the table tag.
| 1 * 1 = 1 | 1 * 2 = 2 | 1 * 3 = 3 | 1 * 4 = 4 | 1 * 5 = 5 |
| 2 * 1 = 2 | 2 * 2 = 4 | 2 * 3 = 6 | 2 * 4 = 8 | 2 * 5 = 10 |
| 3 * 1 = 3 | 3 * 2 = 6 | 3 * 3 = 9 | 3 * 4 = 12 | 3 * 5 = 15 |
| 4 * 1 = 4 | 4 * 2 = 8 | 4 * 3 = 12 | 4 * 4 = 16 | 4 * 5 = 20 |
| 5 * 1 = 5 | 5 * 2 = 10 | 5 * 3 = 15 | 5 * 4 = 20 | 5 * 5 = 25 |
| 6 * 1 = 6 | 6 * 2 = 12 | 6 * 3 = 18 | 6 * 4 = 24 | 6 * 5 = 30 |
9. Chess Board Using Nested For Loops
Write a PHP script using nested for loop that creates a chess board as shown below.
Use table width="270px" and take 30px as cell height and width.
10. Multiplication Table 10x10
Write a PHP script that creates the following table (use for loops).
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 |
| 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 | 27 | 30 |
| 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | 40 |
| 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
| 6 | 12 | 18 | 24 | 30 | 36 | 42 | 48 | 54 | 60 |
| 7 | 14 | 21 | 28 | 35 | 42 | 49 | 56 | 63 | 70 |
| 8 | 16 | 24 | 32 | 40 | 48 | 56 | 64 | 72 | 80 |
| 9 | 18 | 27 | 36 | 45 | 54 | 63 | 72 | 81 | 90 |
| 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
11. FizzBuzz Implementation
Write a PHP program which iterates the integers from 1 to 50. For multiples of three print "Fizz" instead of the number and for the multiples of five print "Buzz". For numbers which are multiples of both three and five print "FizzBuzz".
12. Floyd Triangle Generation
Write a PHP program to generate and display the first n lines of a Floyd triangle. (use n=5 and n=11 rows).
According to Wikipedia Floyd's triangle is a right-angled triangular array of natural numbers, used in computer science education. It is named after Robert Floyd. It is defined by filling the rows of the triangle with consecutive numbers, starting with a 1 in the top left corner:
Sample output for n = 5 :
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
13. Alphabet Pattern 'A'
Write a PHP program to print alphabet pattern 'A'.
Expected Output:
*** * * * * ***** * * * * * * * *
14. Alphabet Pattern 'B'
Write a PHP program to print alphabet pattern 'B'.
Expected Output:
**** * * * * **** * * * * ****
15. Alphabet Pattern 'C'
Write a PHP program to print alphabet pattern 'C'.
Expected Output:
*** * * * * * * * ***
16. Alphabet Pattern 'D'
Write a PHP program to print alphabet pattern 'D'.
Expected Output:
**** * * * * * * * * * * ****
17. Alphabet Pattern 'E'
Write a PHP program to print alphabet pattern 'E'.
Expected Output:
***** * * **** * * *****
18. Alphabet Pattern 'F'
Write a PHP program to print alphabet pattern 'F'.
Expected Output:
***** * * **** * * *
19. Alphabet Pattern 'G'
Write a PHP program to print alphabet pattern 'G'.
Expected Output:
*** * * * * *** * * * * ***
20. Alphabet Pattern 'H'
Write a PHP program to print alphabet pattern 'H'.
Expected Output:
* * * * * * ***** * * * * * *
21. Alphabet Pattern 'I'
Write a PHP program to print alphabet pattern 'I'.
Expected Output:
***** * * * * * *****
22. Alphabet Pattern 'J'
Write a PHP program to print alphabet pattern 'J'.
Expected Output:
***
*
*
*
*
* *
*
23. Alphabet Pattern 'K'
Write a PHP program to print alphabet pattern 'K'.
Expected Output:
* * * * * * ** * * * * * * * *
24. Alphabet Pattern 'L'
Write a PHP program to print alphabet pattern 'L'.
Expected Output:
* * * * * * *****
25. Alphabet Pattern 'M'
Write a PHP program to print alphabet pattern 'M'.
Expected Output:
* * * * ** ** * * * * * * * * *
26. Alphabet Pattern 'N'
Write a PHP program to print alphabet pattern 'N'.
Expected Output:
* * * * ** * * * * * ** * * * *
27. Alphabet Pattern 'O'
Write a PHP program to print alphabet pattern 'O'.
Expected Output:
*** * * * * * * * * * * ***
28. Alphabet Pattern 'P'
Write a PHP program to print alphabet pattern 'P'.
Expected Output:
**** * * * * **** * * *
29. Alphabet Pattern 'Q'
Write a PHP program to print alphabet pattern 'Q'.
Expected Output:
*** * * * * * * * * * * * ** *
30. Alphabet Pattern 'R'
Write a PHP program to print alphabet pattern 'R'.
Expected Output:
**** * * * * **** * * * * * *
31. Alphabet Pattern 'S'
Write a PHP program to print alphabet pattern 'S'.
Expected Output:
****
*
*
***
*
*
****
32. Alphabet Pattern 'T'
Write a PHP program to print alphabet pattern 'T'.
Expected Output:
***** * * * * *
33. Alphabet Pattern 'U'
Write a PHP program to print alphabet pattern 'U'.
Expected Output:
* * * * * * * * * * * * ***
34. Alphabet Pattern 'V'
Write a PHP program to print alphabet pattern 'V'.
Expected Output:
* * * * * * * * * * * * *
35. Alphabet Pattern 'W'
Write a PHP program to print alphabet pattern 'W'.
Expected Output:
* * * * * * * * * * * * * * * *
36. Alphabet Pattern 'X'
Write a PHP program to print alphabet pattern 'X'.
Expected Output:
* * * * * * * * * * * * *
37. Alphabet Pattern 'Y'
Write a PHP program to print alphabet pattern 'Y'.
Expected Output:
* * * * * * * * * *
38. Alphabet Pattern 'Z'
Write a PHP program to print alphabet pattern 'Z'.
Expected Output:
*******
*
*
*
*
*
*******
PHP Code Editor:
More to Come !
Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.