How to remove original email message in reply message using php? - php

Question

I am using PHP to get the email from the POP3 server. However, some emails also contain the original message which I sent to them.
How do I remove the original message, so the PHP script will only get the reply message?
For example:
Email sent from A to B
A
11:08 PM (1 minute ago)
to B
how are you?
Email replied from B to A
11:08 PM (0 minutes ago)
to A
I am fine
> On Sun, Mar 8, 2015 at 11:08 PM, Ryan Ho <ryan#incube.com.hk> wrote:
> how are you?
I would like to remove those wordings "On Sun Mar 8,.... to how are you?".
Thanks.

Answer 1

First, you can save the email in a file, then you can remove all the lines starting with > using a regular expression.
This is because all lines from the original message start with the symbol >, including the text:
On Sun, Mar 8, ... wrote: how are you?
Here is the code doing that:
<?php
$filename="email-full.txt";
$outfile="email-noreply.txt";
$string = file_get_contents($filename);
$array = explode("\n",$string);
foreach($array as $arr) {
if(!(preg_match("/^>/",$arr))) {
$output[] = $arr;
}
}
$out = implode("\n",$output);
file_put_contents($outfile,$out);
?>