What potential pitfalls should be considered when using the strtr() function in PHP?

One potential pitfall when using the strtr() function in PHP is that it performs a simple character-by-character translation, which means it may not work as expected when dealing with multi-byte characters or strings with different lengths. To avoid this issue, you can use the mb_strtr() function from the Multibyte String extension, which handles multi-byte characters correctly. 

// Using mb_strtr() to handle multi-byte characters correctly
$string = "héllø wörld";
$translation = array('é' => 'e', 'ø' => 'o');
$translated_string = mb_strtr($string, $translation);

echo $translated_string; // Output: hello world

Keywords

strtr PHP character replacement string manipulation encoding

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