PHP code should be secure, structured, normalized, and adaptive

Good PHP code should be structured.

Good PHP code should be standardized.

Good PHP code should be adaptive.

Good PHP code should be safe.

What are the pros and cons of PHP code?

1. PHP code that has not been optimized

Echo ("

Search results for query: ".

$_get[' query ']. “.

”);

?>

2. Simple optimized code

Echo ("

Search results for query: ".

Htmlspecialchars ($_get[' query '). “.

”);

?>

3. Reasonably optimized code

if (isset ($_get[' query '))

{

Echo '

Search results for query: ',

Htmlspecialchars ($_get[' query '), ent_quotes), '.

’;

}

?>