什么是PHP中最好的方式来反转单词中的字母

i have a string .

我有一个字符串。

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

我想颠倒每个单词中的字母而不是颠倒单词顺序。

like - 'my string'

喜欢 - '我的字符串'

should be

'ym gnirts'

5 个解决方案

#1

This should work:

这应该工作:

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

Or as a one-liner:

或者作为一个单行:

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

#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.

这比在爆炸原始字符串后反转数组的每个字符串要快得多。

#3

Functionified:

<?php

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

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

?>

#4

This should do the trick:

这应该做的伎俩:

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

#5

I would do:

我会做:

$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

#1