What are some alternative methods to str_ireplace for replacing characters in a text while maintaining case sensitivity?

The issue with using str_ireplace is that it is case-insensitive, meaning it will replace characters regardless of their case. To maintain case sensitivity when replacing characters in a text, you can use a combination of functions like preg_replace_callback and strtoupper/lowercase functions to achieve the desired result. 

$text = "Hello World!";
$replace = "o";
$new_text = preg_replace_callback('/[oO]/', function($match) {
    return strtoupper($match[0]) === $match[0] ? strtoupper($replace) : strtolower($replace);
}, $text);

echo $new_text; // Outputs "HellO WOrld!"

Keywords

str_replace preg_replace mb_eregi_replace case-sensitive text manipulation

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