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 vote101 views1 answer
Php get keys of duplicate values in array
PHP
0 vote119 views1 answer
How to store javascript into a php variable
PHP
18 votes126 views6 answers
Install laravel auth
PHP Laravel
8 votes127 views6 answers
Command not found: laravel
PHP Laravel
7 votes136 views3 answers
Call table name in model laravel
PHP Laravel
5 votes141 views3 answers
Laravel grouping where
PHP Laravel
3 votes106 views4 answers
Filesize in php
PHP
5 votes107 views3 answers
Laravel eloquent duplicate record
PHP
0 vote144 views1 answer
How to pluck fullname database laravel
PHP
0 vote105 views1 answer
Laravel model uploaded file name
PHP