Are there any best practices for handling case sensitivity in string replacement functions in PHP?

When dealing with case sensitivity in string replacement functions in PHP, a common best practice is to use the `str_ireplace()` function instead of `str_replace()`. This function performs a case-insensitive search for the specified string and replaces all occurrences with the replacement string. 

// Using str_ireplace() for case-insensitive string replacement
$string = "Hello World";
$newString = str_ireplace("hello", "Hi", $string);
echo $newString; // Output: Hi World

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case sensitivity string replacement PHP functions best practices handling

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