Last updated on by Gabriel Livan
If you need to extract the username from an e-mail address string then this snippet can help you. For instance, you can use this function inside a loop, while selecting emails from a database.
<?php
function getUsernameFromEmail($email)
{
$find = '@';
$pos = strpos($email, $find);
$username = substr($email, 0, $pos);
return $username;
}
$email = '[email protected]';
$username = getUsernameFromEmail($email);
echo $username; // thecoder
?>
Last updated on by Gabriel Livan
If, for any reason, you need to extract the domain from an e-mail address (or from multiple e-mail address that are in a database) then you can use this function:
<?php
function getDomainFromEmail($email)
{
// Get the data after the @ sign
$domain = substr(strrchr($email, "@"), 1);
return $domain;
}
// Example
$email = '[email protected]';
$domain = getDomainFromEmail($email);
echo $domain; // yahoo.com
?>
Last updated on by Gabriel Livan
This is a script which extracts URLs from Links. The function gets the content from the HREF attribute and ignores the non-urls like: “javascript: openWindow()”.
<?php
/*
Credits: Bit Repository
URL: http://www.bitrepository.com/
*/
$url = 'http://www.php.net/';
// Fetch page
$string = FetchPage($url);
// Regex that extracts the urls from links
$links_regex = '/<a[^/>]*'.
'href=[\"|\']([^javascript:].*)[\"|\']/Ui';
preg_match_all($links_regex, $string, $out, PREG_PATTERN_ORDER);
echo "<pre>"; print_r($out); echo "</pre>";
function FetchPage($path)
{
$file = fopen($path, "r");
if (!$file)
{
exit("The was a connection error!");
}
$data = '';
while (!feof($file))
{
// Extract the data from the file / url
$data .= fgets($file, 1024);
}
return $data;
}
?>
Last updated on by Gabriel Livan
Here’s a piece of code that extracts images from an URL. This only works if the images are displayed using the IMG tag (not CSS).
This script only shows images. It doesn’t download any. The src attribute must have a full url in order for the images to show.
<?php
/*
Credits: Bit Repository
URL: http://www.bitrepository.com/
*/
$url = 'http://www.microsoft.com/';
// Fetch page
$string = FetchPage($url);
// Regex that extracts the images (full tag)
$image_regex_src_url = '/<img[^>]*'.
'src=[\"|\'](.*)[\"|\']/Ui';
preg_match_all($image_regex, $string, $out, PREG_PATTERN_ORDER);
$img_tag_array = $out[0];
echo "<pre>"; print_r($img_tag_array); echo "</pre>";
// Regex for SRC Value
$image_regex_src_url = '/<img[^>]*'.
'src=[\"|\'](.*)[\"|\']/Ui';
preg_match_all($image_regex_src_url, $string, $out, PREG_PATTERN_ORDER);
$images_url_array = $out[1];
echo "<pre>"; print_r($images_url_array); echo "</pre>";
// Fetch Page Function
function FetchPage($path)
{
$file = fopen($path, "r");
if (!$file)
{
exit("The was a connection error!");
}
$data = '';
while (!feof($file))
{
// Extract the data from the file / url
$data .= fgets($file, 1024);
}
return $data;
}
?>NOTE: You can use this script to extract images from local files too (not necessarily URLs).
Feel free to post any comments or suggestions regarding this script.
Last updated on by Gabriel Livan
Here’s a function which is useful when you need to extract some content between two delimiters. For instance you need to extract content using a robot that connects to a page.
<?php
/*
Credits: Bit Repository
URL: http://www.bitrepository.com/extract-content-between-two-delimiters-with-php.html
*/
function extract_unit($string, $start, $end)
{
$pos = stripos($string, $start);
$str = substr($string, $pos);
$str_two = substr($str, strlen($start));
$second_pos = stripos($str_two, $end);
$str_three = substr($str_two, 0, $second_pos);
$unit = trim($str_three); // remove whitespaces
return $unit;
}