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PHP functions - Exercises, Practice, Solution

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PHP functions [ 6 exercises with solution]

1. Write a function to calculate the factorial of a number (non-negative integer). The function accept the number as a argument. Go to the editor

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2. Write a function to check a number is prime or not. Go to the editor
Note: A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself.

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3. Write a function to reverse a string. Go to the editor

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4. Write a function to sort an array. Go to the editor

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5. Write a PHP function that checks if a string is all lower case. Go to the editor
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6. Write a PHP function that checks whether a passed string is palindrome or not? Go to the editor
A palindrome is word, phrase, or sequence that reads the same backward as forward, e.g., madam or nurses run.

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