index_V

V

valid variable, 155

validation, user, 144–149

Value argument, setcookie() function, 153

VALUE attribute, 30

value directives, 15

values

returning from forms, 50

returning from functions, 48–49

varchar field type, 114

variables

arrays, 35

calculation example, 41–45

case-sensitivity, 252

$_COOKIE, 36

from cookies, 254

count, 155

environment, 60–61, 254

floats variable type, 252

$_GET, 36

global, 35

HTTP_USER_AGENT, 61

integers variable type, 252

local, 35

$msg, 67

$_POST, 36

pre-defined, 36

REMOTE_ADDR, 61

scalar, 35

$_SESSION, 36, 155–156

session variables, 154–156

strings variable, 252

superglobals, 36

valid, 155

value types and, 35