Can preg_replace insert a space into a string?
<p>Simple question (since my regex knowledge isn't very strong!): If I've got a string of, say, 10 characters, can <code>preg_replace()</code> be used to insert a string after character #3, if there isn't already a space there, or do I need to split the string 1st into 2 components using <code>str_split()</code>?</p>
