Php undefined offset

Php check undefined offset

// $key = 10, if $array does not have $array[10] set, it will return false
// If $array[10] has any value, it will return true
if(array_key_exists($key, $array)){}

Php undefined offset

If preg_match did not find a match, $matches is an empty array. So you should check if preg_match found an match before accessing $matches[0], for example:

function get_match($regex,$content)
{
    if (preg_match($regex,$content,$matches)) {
        return $matches[0];
    } else {
        return null;
    }
}

Source: stackoverflow.com

Similar codes

0 vote243 views3 answers
Laravel disable Logging
PHP Laravel
0 vote275 views1 answer
Executer page php via boutton
PHP
0 vote235 views1 answer
Illuminate/container requires php your php version (X.X.XX) does not satisfy that requirement.
PHP
2 votes236 views3 answers
Run artisan command from controller
PHP
0 vote243 views1 answer
Php is closure
PHP
0 vote275 views1 answer
Pagination in codeigniter with example
PHP CodeIgniter
0 vote262 views2 answers
Laravel FileManager Display Blank pop up page
PHP
8 votes270 views3 answers
Magento 2.4.3 how to log
PHP
11 votes228 views4 answers
Session variable in laravel
PHP
0 vote220 views1 answer
Add object to http request php behamin proxy bproxy
PHP