如何解码电子邮件？

Question

I am scraping one page and it has e-mails like ...mailto:Stewart.Smi&#1... and similar. It is decoded, how could I encode it with PHP? Thanks (only for education purposes).

Answer 1

These are just ordinary ASCII characters which for mysterious reasons have been encoded in HTMLs numeric character format. ie the letter "a" is coded as ` .

A list of common encodings

The built in php function html-entity-decode() should convert these back to readable utf-8.

Answer 2

try html_entity_decode() to get the encoded value.

for ex:

$str = "mailt&#111";  
$string = html_entity_decode($str);
echo $string;

Answer 3

Each entity is the decimal representation of a character. This Perl code will translate simple ASCII.

use strict;
use warnings;

my $mail = 'mailto:Stewart.Smi&#1';

$mail =~ s/&#(\d+);/chr $1/eg;

print $mail;

OUTPUT

mailto:Stewart.Smi&#1