Write a isPalindrome Function Write a function isPalindrome($str) that returns true if the parameter string is a palindrome (a palindrome is a word or sentence that reads the same forward and backward at the character level). You should ignore non-letter characters when determining if the string is a palindrome. Thus, isPalindrome("A man, a plan, a canal, Panama!") should return true.

Write a isPalindrome Function Write a function isPalindrome($str) that returns true if the parameter string is a palindrome (a palindrome is a word or sentence that reads the same forward and backward at the character level). You should ignore non-letter characters when determining if the string is a palindrome. Thus, isPalindrome("A man, a plan, a canal, Panama!") should return true.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Write a isPalindrome Function

Write a function isPalindrome($str) that returns true if the parameter string is a palindrome (a palindrome is a word or sentence that reads the same forward and backward at the character level). You should ignore non-letter characters when determining if the string is a palindrome. Thus, isPalindrome("A man, a plan, a canal, Panama!") should return true.