What potential pitfalls should be avoided when using str_replace in PHP?

When using str_replace in PHP, potential pitfalls to avoid include not specifying the correct parameters, such as the search and replace strings, and inadvertently replacing more instances than intended. To prevent this, always double-check the parameters passed to str_replace and ensure they are correctly defined. 

// Incorrect usage of str_replace
$string = "Hello, world!";
$new_string = str_replace("Hello", "Hi", $string); // This will replace all instances of "Hello" in the string

// Correct usage of str_replace
$string = "Hello, world!";
$new_string = str_replace("Hello", "Hi", $string, 1); // This will only replace the first instance of "Hello" in the string

Keywords

str_replace PHP string manipulation character encoding edge cases

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