PHP error unexpected '\'

Question

I have some error in my PHP contact form

   if ($sukces){
      print "<meta http-equiv="\" refresh\""="" content="\" 0;url="potwierdzenie.php\""">";
      }
    else {
       print "<meta http-equiv="\" refresh\""="" content="\" 0;url="error.htm\""">";
}
?>

I know it's something with \ should be / but I have no idea where. Thanks for help.

Answer 1

You have several options:

1) Escape like this:

echo "<meta http-equiv=\"Refresh\" CONTENT=\"0\"; URL=\"potwierdzenie.php\">";

2) Use the embedded syntax of if-else in HTML:

<?php if ($sukces): ?>

<meta http-equiv="Refresh" CONTENT="0" URL="potwierdzenie.php">
<?php else:   ?>    
<meta http-equiv="Refresh" CONTENT="0" URL="error.htm">
<?php endif; ?>

If else embedding inside html

3) Use single quotes inside double quotes as @"Nick L." said

4) Do this:

< meta http-equiv="Refresh" CONTENT="0" URL="< ?= ($sukces ? "potwierdzenie.php" : "error.htm" ) ? >">

Answer 2

A good way to avoid this mess is to use single quotes (as mentioned in the comments, kudos to Michael Berkowski's comment):

<?php

if ($sukces){
      print "<meta http-equiv='refresh' content='0' url='potwierdzenie.php'>";
} else {
       print "<meta http-equiv=' refresh' content='0'url='error.htm'>";
}

?>