What are common pitfalls when using str_replace function in PHP and how can they be avoided?

One common pitfall when using the str_replace function in PHP is not specifying the correct parameters. Make sure to provide the correct number of arguments and ensure that the search and replace parameters are in the correct order. Additionally, be mindful of case sensitivity when using str_replace as it is case-sensitive by default. 

// Incorrect usage of str_replace
$string = "Hello World";
$new_string = str_replace("hello", "hi", $string); // This will not replace anything

// Correct usage of str_replace
$string = "Hello World";
$new_string = str_replace("Hello", "Hi", $string);
echo $new_string; // Output: Hi World

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str_replace PHP common mistakes avoid best practices

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