string $str = "This is some text";

string $newStr;

// Replace "some" with "a bit of"

$newStr = `strReplace $str "some" "a bit of"`;

print $newStr; 

// Should be "This is a bit of text"

// Remove all occurrences of "i" in the new string

$newStr = `strReplace $newStr "i" ""`;

print $newStr; 

// Should be "Ths s a bt of text"

// Replace all x's with s's

$newStr = `strReplace $str "x" "s"`;

print $newStr; 

// Should be "This is some test"