If the need is to parse a string and extract the words. Then its advisable to use preg_split instead of using the explode function. Code follows : preg_split ("/\s+/",$textInput); where the first argument is the regular expression for finding one or more spaces and the second argument is the input text. This option works far better than the explode(" ", $textInput).

Getting Started Level 0 Every Linux newbie hears about power of grep sooner or later. But no sooner does newbie try to use the grep command the experiment ends badly. The reason grep almost never yields anything productive is because of a couple of issues. The basic problem is lack of knowledge of regular expressions and secondly knowledge of switches of grep. This realization should not deter a new user from using grep. A very nice detailed tutorial of regular expression (regex) is available here . The migrating user having used dir and similar commands in DOS and using windows search box almost never expects (nor can fathom) the power provided by grep. Firstly grep means "global regular expression print". Now this means that knowledge of regex is required to be able to use grep effectively . Now what should a newbie do? Wait till user's regex knowledge improves? NO NOT AT ALL. That would scare away the user and never to use grep. Here is the first simple command that ...