Alexander-Pop

<?php
/* @ http://stackoverflow.com/a/12628971 */
    function isValidUrl($url){
        // first do some quick sanity checks:
        if(!$url || !is_string($url)){
            return false;
        }
        // quick check url is roughly a valid http request: ( http://blah/... ) 
        if( ! preg_match('/^http(s)?:\/\/[a-z0-9-]+(.[a-z0-9-]+)*(:[0-9]+)?(\/.*)?$/i', $url) ){
            return false;

Alexander-Pop

<?php
/* @ http://stackoverflow.com/a/12628971 */

    function getHttpResponseCode_using_getheaders($url, $followredirects = true){
        // returns string responsecode, or false if no responsecode found in headers (or url does not exist)
        // NOTE: could potentially take up to 0-30 seconds , blocking further code execution (more or less depending on connection, target site, and local timeout settings))
        // if $followredirects == false: return the FIRST known httpcode (ignore redirects)
        // if $followredirects == true : return the LAST  known httpcode (when redirected)
        if(! $url || ! is_string($url)){
            return false;

Alexander-Pop

<?php
$oldname = "index.html"; 
$newname = "index.php";

// checking if file exist or not.
if ( file_exists($oldname) && ( (!file_exists($newname))|| is_writable($newname) ) ) {
	$renameResult = rename($oldname, $newname);
	die($oldname . " renamed to " . $newname);
} else {
	die('nothing to rename.');

Alexander-Pop

##Create an alias to MAMP's PHP installation

To do this, we can simply create an alias for our bash profile. We'll be doing this is nano, though you can do it in vim or a number of other editors as well.

Within the terminal, run:

nano ~/.bash_profile

This will open nano with the contents, at the top in a blank line add the following line: