Extract Email ID from Content PHP

In many, CMS development, We may often to check whether any email was found inside the content in this case. Here is the best solution to extract email ids from content using the power of regular expression.

Regular Expression to extract Email IDs from Content.

'/([\w-\.]+)@((?:[\w]+\.)+)([a-zA-Z]{2,4})/'

PHP function to extract All Regular Expression Matches

preg_match_all('/([\w-\.]+)@((?:[\w]+\.)+)([a-zA-Z]{2,4})/',$content,$output);

Sample Content.txt with email id mixed html

<p>example for extracting email id <b>example@gmail.com</b> 
from entire content it mean how many <b>email@example.com</b> 
<b>admin.connnect@example.com</b></p

<?php

//Extract Email ID from content.txt

$whois = file_get_contents("content.txt");
preg_match_all('/([\w-\.]+)@((?:[\w]+\.)+)([a-zA-Z]{2,4})/',$whois,$emails);


echo "<pre>";
print_r($emails[0]);

?>

Output

// OUTPUT


Array
(
    [0] => example@gmail.com
    [1] => email@example.com
    [2] => admin.connnect@example.com
)