List all the files in a directory in php

This code will display all the files in the images folder.


foreach (glob("images/*.*") as $filename) {
       echo basename($filename);
}

Google search text code using php

The  following lines of code will provide search results using the google search API.
   


    //search text to be passes
    $search_text = "katharnavas";
    $url = "http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=".$search_text;

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $results = curl_exec($ch);
    curl_close($ch);

    // The results will be in json encoded format so do a decode
    $json = json_decode($results);
    print_r($json);

How to update twitter status using php

The following lines of code are used to update your status in twitter.

//Text to be updated on twitter
$status = "Hi this is the text to be updated";
//your twitter username
$username = "xxxxusername";
//your twitter password
$password = "password";
$postvars = "status=".$status;
$url = "http://twitter.com/statuses/update.xml";

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_USERPWD, "$username:$password");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postvars);           
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);  // DO NOT RETURN HTTP HEADERS
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);  // RETURN THE CONTENTS OF THE CALL
$res=curl_exec($ch);
curl_close($ch);

Read webpage or external file contents in php

The following are the different ways of reading a web page or external file contents in php.

$pageurl = "http://google.com";

//First Method
$r = new HTTPRequest($pageurl);
$html = $r->DownloadToString();
echo $html;

//Second Method
$html =file_get_contents($pageurl);
echo $html;

//Third Method (Using Curl) For this curl support should be enabled.
echo phpinfo();
//to check whether curl is enabled or not.

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
// DO NOT RETURN HTTP HEADERS
curl_setopt($ch, CURLOPT_HEADER, 0); 
 // RETURN THE CONTENTS OF THE CALL
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$res=curl_exec($ch);
curl_close($ch);
print_r($res[2]);

Email Validation using Php and Javascript

This function checks whether the email provided is valid and returns false if not valid.
Php Function for validating email
//$email -> email value to be validated.
function callEmailCheck($email, $strict = false)
{
    $regex = $strict? '/^([.0-9a-z_-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,4})$/i' : '/^([*+!.&#$¦\'\\%\/0-9a-z^_`{}=?~:-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,4})$/i' ;
    if (preg_match($regex, trim($email), $matches))    {
       return array($matches[1], $matches[2]);
    }
    else {
       return false;
    }
}
This function checks whether the user email entered in the text box is valid or not. Call this function on submit.
Javascript Function for validating email
function callEmailCheck() {


var emailreg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
//useremail is the name of the email text field.
var email = document.getElementById("useremail").value;
if(emailreg.test(email) == true){
return email;
}
return "";

}