Question

How to check whether a sentence is palindrome in PHP

Answer 1

function isSentencePalindrome($str) {
    // Change the string into lowercase and remove all non-alphanumeric characters
    $str = strtolower(preg_replace('/[^a-zA-Z0-9]/', '', $str));

    return $str === strrev($str);
}

echo isSentencePalindrome("Top step's pup's pet spot.") ? "yes" : "no";



/*
run:

yes

*/

 

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