in_array函数无法正常工作

Question

I am using a multidimensional array to hold the variables for a given page. I am trying to get a string from the url and match it with an array within my template array to pull the correct variables to display on the page.

Here is my array:

$template = array(

    "index" => array(
        "title" => "Dashboard",
        "model" => "model/dash.php"
    ),
    "input" => array(
        "title" => "Dashboard",
        "model" => "model/input.php"
    ),
    "jobboard" => array(
        "title" => "Job Board",
        "model" => "model/job_board.php"
    ),
    "jobcreate" => array(
        "title" => "Job Creator",
        "model" => "model/job_create.php"
    )
);

And here is what I am using to try and verify the pages:

if(isset($_GET['page'])){ $page = $_GET['page']; }

if(in_array($page, $template)){
    $title = $template[$page]['title'];
    $model = $template[$page]['model'];
    echo "yes";
}else{
    $title = $template['index']['title'];
    $model = $template['index']['model'];
    echo "no";
}

The echo "yes/no"; is what I am using to debug if it is working or not but no matter what I have done it just keeps on outputting no.

Answer 1

in_array() looks at values. It is probably keys you're after.

You can check that with array_key_exists() .

Answer 2

Take a look at the documentation of php's in_array()

in_array — Checks if a value exists in an array

It looks like your intention is to check against the index of the array, rather than the value. The values in the array are arrays.

Try using array_key_exists() instead.

if (array_key_exists($page, $template)) {
  $title = $template[$page]['title'];
  $model = $template[$page]['model'];
  echo "yes";
}
else {
  $title = $template['index']['title'];
  $model = $template['index']['model'];
  echo "no";
}