arrays - How to fix Warning Illegal string offset in PHP

Question

I have this chunk of PHP code which is giving me the error:

Warning: Illegal string offset 'iso_format_recent_works' in C:xampphtdocsMantawp-contenthemesmantafunctions.php on line 1328

This is the code that the warning is relating to:

if(1 == $manta_option['iso_format_recent_works']){
    $theme_img = 'recent_works_thumbnail';
} else {
    $theme_img = 'recent_works_iso_thumbnail';
}

When I do an a var_dump($manta_option); I receive the follow result:

["iso_format_recent_works"]=> string(1) "1"

I have tried casting $manta_option['iso_format_recent_works'] to an int but still get the same issue.

Any help would be greatly appreciated!

Answer 1

Magic word is: isset

Validate the entry:

if(isset($manta_option['iso_format_recent_works']) && $manta_option['iso_format_recent_works'] == 1){
    $theme_img = 'recent_works_thumbnail';
} else {
    $theme_img = 'recent_works_iso_thumbnail';
}