Return part of string in array - php

Question

So I'm trying to make this little script work for fun and just cant get it to work,
I have an array of random names that are assigned their 'random' email addresses, I want to check if the email address have extension:
'#hotmail.com',
'#hotmail.ca', or
'#yahoo.ca' . if they are then echo something like 'Daniel, your email addresses extension is $extension, you qualify'
and if they don't just say 'Kayla, your email address is $extension, you don't qualify.
I want to add a foreach statement explaining that for each person in the array $ClassRoom2, i've tried using strstr() but it doesn't work inside the foreach because it can only have one string.
heres what i got so far:
qualify = "";
$ClassRoom2 = array(
'Daniel' => 'fresco#hotmail.com',
'Mike' => 'dkoko#yahoo.ca',
'Meranda' => 'brunnn_23#hotmail.ca',
'Will' => 'yumyum03#wp.pl',
'Brittey' => 's0sd#outlook.com',
'Kayla' => 'hocklife#freebie.com' );
switch ($ClassRoom2) {
case '#hotmail.com':
echo 'You are using extension '. $final; $qualify = 1; break;
case '#hotmail.ca':
echo 'You are using extension '. $final; $qualify = 1; break;
case '#yahoo.com':
echo 'You are using extension '. $final; $quality = 1; break;
case '#yahoo.ca':
echo 'You are using extension '. $final; $qualify = 1; break;
case '#live.ca':
echo 'You are using extension '. $final; $quality = 1; break;
default:
echo 'its something else'; $qualify = 0;
break;
}
if ($qualify == 1) {
echo "Congratulations, you quality for the contest. The extension you chose was <b>$final</b>";
} else {
echo "Sorry mate! you didn't quality for the contest.";
}

Answer 1

Use explode() to get the domain part and compare it
$parts = explode("#", "johndoe#domain.com");
echo ($parts[1]=='domain.com') ? 'qualify' : 'not qualify';

Answer 2

Sorry for my late reaction, I was still testing my code example.
If you want to stick with the switch you currently designed, you could use a simple preg_match to extract the string you need. Here is a little example (you can remove the comment and put in your switch there):
<?php
$ClassRoom2 = array(
'Daniel' => 'fresco#hotmail.com',
'Mike' => 'dkoko#yahoo.ca',
'Meranda' => 'brunnn_23#hotmail.ca',
'Will' => 'yumyum03#wp.pl',
'Brittey' => 's0sd#outlook.com',
'Kayla' => 'hocklife#freebie.com'
);
foreach ($ClassRoom2 as $name=>$email) {
$matches = [];
preg_match( "/(#.+)/", $email, $matches);
// Do things with $matches[0] here (your switch for eg)
// switch ($matches[0]) {
// case '#hotmail.com':
// ...
print '<br/> ' . $matches[0];
}
?>
If you want, you can fiddle arround with preg matches on this website: regexr
Update You can actually do a lot with preg_match, once you get the hang of it :)
foreach ($ClassRoom2 as $name=>$email) {
$matches = preg_match( "/#(hotmail.com|hotmail.ca|yahoo.ca|yahoo.com|live.ca)/", $email);
// if ($matches) // or simply replace the preg_match in the if
print '<br/> ' . $email . ($matches ? ' qualifies' : ' <strong>does not qualify</strong> ') . 'for the email test';
}

Answer 3

I would put the list of entries and the qualifying extensions on separate arrays then check each people entry and parse their information to see if each qualify, like this:
$peoplelist = array(
'Daniel' => 'fresco#hotmail.com',
'Mike' => 'dkoko#yahoo.ca',
'Meranda' => 'brunnn_23#hotmail.ca',
'Will' => 'yumyum03#wp.pl',
'Brittey' => 's0sd#outlook.com',
'Kayla' => 'hocklife#freebie.com'
);
$qualify = array(
'hotmail.com',
'hotmail.ca',
'yahoo.com',
'yahoo.ca',
'live.ca',
);
foreach( $peoplelist as $name => $email )
{
$parts = explode( "#", $email );
$extension = strtolower( trim( array_pop( $parts ) ) );
echo "Hi, ".$name.". You are using extension #".$extension.". <br /> \n";
if( in_array( $extension, $qualify ) )
{
echo "Congratulations, you quality for the contest. <br /> \n";
}
}