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 vote313 views1 answer
Php send POST request same folder
PHP
0 vote334 views1 answer
Laravel delete index
PHP Laravel
0 vote309 views1 answer
Php get final redirect url
PHP
0 vote370 views1 answer
Users not having any role laravel spatie
PHP Laravel
0 vote334 views1 answer
Laravel count distance lat/longtidue
PHP Laravel
0 vote269 views1 answer
Laravel blade array seearch select box
PHP
0 vote370 views1 answer
Wp wc php if cart page is empty redirect
PHP Wordpress
0 vote339 views1 answer
Count column eloquent laravel
PHP Laravel
6 votes329 views4 answers
Get featured image id wordpress
PHP Wordpress
7 votes310 views1 answer
Laravel auth user_id
PHP Laravel