How can the use of str_replace() in PHP be optimized to ensure accurate and complete replacement of specified substrings in a text?

When using str_replace() in PHP to replace specified substrings in a text, it's important to ensure accurate and complete replacement by paying attention to the order of arguments. The function takes three arguments: the substring to be replaced, the replacement substring, and the original text. To ensure accurate replacement, make sure to pass the arguments in the correct order and handle any edge cases where the replacement substring may also match the original substring.

// Example of using str_replace() to ensure accurate and complete replacement
$original_text = "The quick brown fox jumps over the lazy dog.";
$substring_to_replace = "fox";
$replacement_substring = "cat";

// Correct way to use str_replace() with accurate replacement
$modified_text = str_replace($substring_to_replace, $replacement_substring, $original_text);

echo $modified_text;