// The text string$text = "The quick brown fox jumped over the lazy dog.";
// The word we want to replace$oldWord = "brown";
// The new word we want in place of the old one$newWord = "blue";
// Run through the text and replaces all occurrences of $oldText$text = str_replace($oldWord , $newWord , $text);
// Display the new textecho $text;
?>