what is the best way in php to reverse letters in words

Question

i have a string .

i want to reverse the letters in every word not reverse the words order.

like - 'my string'

should be

'ym gnirts'

Answer 1

This should work:

$words = explode(' ', $string);
$words = array_map('strrev', $words);
echo implode(' ', $words);

Or as a one-liner:

echo implode(' ', array_map('strrev', explode(' ', $string)));

Answer 2

echo implode(' ', array_reverse(explode(' ', strrev('my string'))));

This is considerably faster than reversing every string of the array after exploding the original string.

Answer 3

This should do the trick:

function reverse_words($input) {
    $rev_words = [];
    $words = split(" ", $input);
    foreach($words as $word) {
        $rev_words[] = strrev($word);
    }
    return join(" ", $rev_words);
}

Answer 4

I would do:

$string = "my string";
$reverse_string = "";

// Get each word
$words = explode(' ', $string);
foreach($words as $word)
{
  // Reverse the word, add a space
  $reverse_string .= strrev($word) . ' ';
}

// remove the last inserted space
$reverse_string = substr($reverse_string, 0, strlen($reverse_string) - 1);
echo $reverse_string;
// result: ym gnirts

Answer 5

Functionified:

<?php

function flipit($string){
    return implode(' ',array_map('strrev',explode(' ',$string)));
}

echo flipit('my string'); //ym gnirts

?>

Answer 6

There is a built-in function strrev