Question

I have a capcha code for example i have in database table it as:Nag14I .if i put it as:nag14i in following mysql query i have a output:

$query = "SELECT * FROM captcha WHERE word = 'nag14i' AND captcha_time > '$expiration'";
print_r($query); //[num_rows] => 1

I have in out put as:

word = Nag14I => [num_rows] => 1 
word = nag14I => [num_rows] => 0 
word = Nag14i => [num_rows] => 0 
word = nag14i => [num_rows] => 0

How can match all letters if is uppercase or lowercase by mysql query?

Answer 1

MySQL isn’t case-sensitive by default, in order to make a query case-sensitive try the BINARY operator:

$query = "SELECT * FROM captcha WHERE BINARY word = nag14i AND captcha_time > '$expiration'";