PHP - Foreach (Array of an Array)

Question

Here is an example:

for($i=1; $i < 10; $i++){
  $marray[] = array($name, $email, $password); // Lets just say for now, there is real
                                               // data for each online being input
}

foreach ($marray as $e){
   echo "Name: ". $e[0];
   echo "Email: ". $e[1];
}

I forgot to mention: This script works fine on both my servers. But, When I include array_unique before "Foreach" is called, it doesn't work, no error message or anything.

let me guess, you forgot semicolon at the end of your array_unique line? — SilentGhost
– SilentGhost, Commented Oct 2, 2009 at 14:54
The output on my local server prints out a unique list of names and a unique list of items they viewed. — Michael
– Michael, Commented Oct 2, 2009 at 15:29

Phill Pafford · Accepted Answer · 2009-10-05 13:25:04Z

1

Works fine for me:

$name = "Phill";
$email = "[email protected]";
$password = "p@ssw0rd";

for($i=1; $i < 10; $i++){
  $marray[] = array($name, $email, $password); 

}

foreach (array_unique($marray) as $e){
   echo "Name: ". $e[0]."<br />";
   echo "Email: ". $e[1]."<br />";
}

This is returned:

Name: Phill
Email: [email protected]

What version of PHP are you using?

answered Oct 5, 2009 at 13:25

Phill Pafford

85.5k92 gold badges268 silver badges385 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

GSto · Accepted Answer · 2009-10-02 14:24:31Z

0

I would check which version of PHP both servers have installed. you can do this with phpinfo(). I can't think of any other reason it would work on one server, but not another. What do you mean by 'doesn't recognize?' do you get any error messages? If so, what are they?

answered Oct 2, 2009 at 14:24

GSto

42.5k37 gold badges136 silver badges188 bronze badges

3 Comments

Michael Over a year ago

Actually I forgot to mention. That script up there works fine. When I use "array_unique", that's when it fails. I don't get any error message, It just "foreachs" one record instead of the example up there "10 records".

Michael Over a year ago

Here is a cut out: $q = mysql_query($strSQL); $hold = array(); $view = array(); while($rez = mysql_fetch_array($q)) { $view[] = array($rez[6],$rez[1],$rez[8],$rez[9]); $hold[] = array($rez[2],$rez[3],$rez[6]); } $hold = array_unique($hold); sort($hold); $view = array_unique($view); sort($view); foreach($hold as $u){ echo $u[0]; }

GSto Over a year ago

array_unique casts whatever is in the array (in this case, another array) as a string. it's not really designed to work with arrays of arrays, you may want to write your own custom function. Also, it's possible that there is some difference in the mySQL data that is causing the problem.

Michael · Accepted Answer · 2009-10-02 19:08:54Z

0

Welp, figured this one out my self. Instead of making it more confusing, I just set the initial text in an "exploded" matter.

answered Oct 2, 2009 at 19:08

Michael

Comments

Toto · Accepted Answer · 2009-10-05 13:36:25Z

0

As read on the php documentation:

Note: Note that array_unique() is not intended to work on multi dimensional arrays.

(Ugly) fix if "email + lastname + email" is the key:

$uniqueUsers = array();
foreach ($users as $user) {
    $uniqueUsers[$user['name'] . $user['lastname'] . $user['email']] = $user;
}

I think it is better to build directly (if possible) the array without duplicates.

edited Oct 5, 2009 at 13:36

answered Oct 5, 2009 at 13:29

Toto

2,44825 silver badges43 bronze badges

Comments

Chester Alan · Accepted Answer · 2012-10-07 22:14:13Z

0

Try this one:

    $mstorage = array();
    foreach ($marray as $e){
    if(in_array($email, $mstorage) === FALSE) {
        echo "Name: ". $e[0]."<br />";
        echo "Email: ". $e[1]."<br />";
        array_push($mstorage, $email);
   }
}

answered Oct 7, 2012 at 22:14

Chester Alan

814 bronze badges

Collectives™ on Stack Overflow

PHP - Foreach (Array of an Array)

5 Answers 5

Comments

3 Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

5 Answers 5

Comments

3 Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related