Regex to Extract an Email Address

[miraan]

Hi all,

Please can someone help me! I have experimented on this for hours but I am new to regex! Here is my problem:

I want to get the email address admin@example.n et out of this string and store it in $email.

The string is:
<a href='mailto:ad min@example.net '>admin@example .net</a>

Please can someone give me code to get the email address out of this string and place it in $email.

All help will be greatly appreciated!

[Gulzor]

Hi,

I use the following regular expression to extract emails from files :

^([_a-z0-9-]+)(\.[_a-z0-9-]+)*@([a-z0-9-]+)(\.[a-z0-9-]+)*(\.[a-z]{2,4})$

source : http://www.developer.com/lang/php/article.php/3290141

[miraan]

hmmm,
can you give me the function for that. I am new to regex and i cant seem to use that expression with ereg_replace. Here is what i have tried to do:

<?php
$string="<a href='mailto:admin@example.net'>admin@example.net</a>";
$string=ereg_replace("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$",$1,$string);
echo $string;
?>

I am not even sure if in ereg_replace you are allowed to use regex as a string pattern or if you can use $1 to use the first match to replace $string with (i.e. the email address found in the string.

[miraan]

Sorry, heres some improved code:

<?php
$string="<a href='mailto:admin@example.net'>admin@example.net</a>";
if(ereg("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$", $string, $regs)) {
  	$string=$regs[1];
} else {
echo "No matches!<br>";
echo $string;
}
?>

[Gulzor]

I wrote that script to extract all email addresses contained into a file : (don't forget to replace page.html with your file)

[php]
<?php

$buffer=file_ge t_contents('pag e.html');

/* pas de ^ et $ car plusieurs emails par lignes !*/
$regex='`([_a-z0-9-]+)(\.[_a-z0-9-]+)*@([a-z0-9-]+)(\.[a-z0-9-]+)*(\.[a-z]{2,4})`';


$matches=array( );
preg_match_all( $regex, $buffer, $matches);

$emails=array_u nique($matches[0]);

sort($emails, SORT_STRING);


foreach($emails as $email){
echo "$email\r\n ";
}


//print_r($emails );

?>
[/php]