将变量连接到PHP中的链接

Question

I would like to link a variable to a link. The variable looks something like this which I grab from json. The json variable for $movieSeat is : A1,A2,B3,V4

Below is the code that I've tried out. The issue that I am currently having is, the link doesn't seem to be working. It seems like something to do with . and +. I'm also not too sure when to use . and + for the linking.

<?php
    echo "<script> function movieBTN(x) { location.href = 'http://movie.com/movieOne?seatNum=" . $movieSeat. "'; } </script>";       
    for ($i = 0; $i < $jsonCounter; $i++) {
    $movieSeat =  $jsonValue[$i]->seatID;      
    echo "<button onclick = movieBTN(".$movieSeat.")> Movie Seat </button>";        
    }

    ?>

Answer 1

First of all, if you're echoing the function from PHP, make sure you use JS variables and not PHP's:

echo "<script> function movieBTN(x) { location.href = 'http://movie.com/movieOne?seatNum=' + x; } </script>";

So it will output:

<script> 
    function movieBTN(x) { location.href = 'http://movie.com/movieOne?seatNum=' + x; } 
</script>

Next, you need to wrap the variable passed to that function with ':

echo "<button onclick = movieBTN('".$movieSeat."')> Movie Seat </button>"; 

So it will output as:

<button onclick = movieBTN('A1')> Movie Seat </button>