[Solution] Check if a string contains a specific word?
It’s very easy like this :
[Solution] Prevent SQL injection in PHP?
Using PDO (for any supported database driver): 2. Using MySQLi (for MySQL):
[Solution] PHP “Notice: Undefined variable”, “Notice: Undefined index” “Notice: Undefined offset”
Q1: this notice means $varname is not defined at current scope of the script. Q2: Use of isset(), empty() conditions before using any suspicious variable works well. Solution Anoter solution :