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phpincluderequire-once

Some contents of an included file is not loading

I am trying to load contents of a file (myfile.php) into another (index.php) using the include_once() php api. But it is not loading the contents.

// contents inside index page
if(include_once('myfile.php')){
    echo D; // this is working
    echo $b; // this is not working
} else {
    echo "unable to include the file";
}   

// contents inside myfile.php
define('D', '123');
$b = "abcd";
Solution

  • You might be not including it correctly.

    You can find this in the documentation:

    <?php
// won't work, evaluated as include(('vars.php') == 'OK'), i.e. include('')
if (include('vars.php') == 'OK') {
    echo 'OK';
}

// works
if ((include 'vars.php') == 'OK') {
    echo 'OK';
}
?>