How to write a php function?

Question

i'm trying to do this:

function myFunction($id, $id2) {
  $cl=$dbh->prepare("SELECT id2 FROM users WHERE id = :id");
  $cl->bindParam(':id', $id);
  $cl->execute();
  $cli=$cl->fetch(PDO::FETCH_ASSOC);
  $lid=$cli['id2'];
  if($id !== $id2) {
    exit("mismatch error");
  }
}

then i want to call myFunction on another page.

myFunction($id, $id2);

how can i do this correctly on another page?

let me explain better. here is what im trying to do.

i have been putting this on every page:

$cl=$dbh->prepare("SELECT id2 FROM users WHERE id = :id");
  $cl->bindParam(':id', $id);
  $cl->execute();
  $cli=$cl->fetch(PDO::FETCH_ASSOC);
  $lid=$cli['id2'];
  if($id !== $id2) {
    exit("mismatch error");
  }
}

but how would i make that into a function?

Include the file in that page and then call the function. be sure to use `$cl`, `$dbh` as global, otherwise you will get error of access — Thamilhan, May 28 '16 at 01:24
you have a variable scope issue http://php.net/manual/en/language.variables.scope.php — Funk Forty Niner, May 28 '16 at 01:38

score 0 · Answer 1 · answered May 28 '16 at 01:26

0

Include the file where your function is located.

<?php
include 'functionFile.php';
echo myFunction($id, $id2);
?>

answered May 28 '16 at 01:26

Ren Mark Almojera Cerdan

268
1
12

that won't work; variable scope http://php.net/manual/en/language.variables.scope.php – Funk Forty Niner May 28 '16 at 01:35
i just answered what is the question, not the problem of `variable scope`. – Ren Mark Almojera Cerdan May 28 '16 at 01:45
Funny; @deceze just closed the question about that. He's pretty spot on when it comes to stuff like this. Your answer doesn't solve it. They already declared the function and the variables. However, I'll eat my words if the OP agrees. – Funk Forty Niner May 28 '16 at 01:46

How to write a php function?

1 Answers1