comparing two Multi dimensional associative array s

[wardsunset]

I want to compare two arrays if an email address in array 1 exists in array 2 (here: \[code\][email protected]\[/code\]). In that case it should display that the email already exists.\[code\]$Array1 = Array( [0] => Array ( [username] => uname1 [name] => fullname1 => [email protected] )[1] => Array ( [username] => uname2 [name] => fullname2 [email] => [email protected] )[2] => Array ( [username] => uname3 [name] => fullname3 [email] => uname3@@email.com ) } $Array2 = Array( [0] => Array ( [username] => uname1 [name] => fullname1 [email] => [email protected] )}\[/code\]