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

35 votes226 views6 answers
Laravel make auth
PHP Laravel
2 votes197 views2 answers
How to add attributes to an object in php
PHP
44 votes278 views6 answers
How to create controller in laravel
PHP Laravel
2 votes277 views4 answers
Laravel run schedule locally
PHP Laravel
0 vote244 views1 answer
Parse error: syntax error, unexpected '' (T_ENCAPSED_AND_WHITESPACE), expecting '-' or identifier (T_STRING) or variable (T_VARIABLE) or number (T_NUM_STRING)
PHP
0 vote157 views1 answer
Php serve a video (THE ONLY WORKING CODE)
PHP
0 vote222 views1 answer
Wordpress display post categories
PHP Wordpress
0 vote230 views1 answer
NAME OF YOUR FORM in contact form 7
PHP
0 vote172 views1 answer
Set default value for column in laravel model
PHP
2 votes208 views1 answer
Php reverse shell oneliner
PHP