Why are certain variables like $bk['firma'] and $bk['comment'] not being displayed as expected in the PHP code?

The issue might be that the variables $bk['firma'] and $bk['comment'] are not set or initialized properly in the code. To solve this, make sure that these variables are properly set with values before trying to display them. You can check if they are set using isset() function before displaying them. 

// Check if $bk['firma'] and $bk['comment'] are set before displaying them
if(isset($bk['firma'])) {
    echo $bk['firma'];
}

if(isset($bk['comment'])) {
    echo $bk['comment'];
}

Keywords

PHP variables array display troubleshooting

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