index_R

R

r mode, writing data files, 70, 285

r+ mode, writing data files, 70

radio buttons, 28

rand() function, 293

reading

cookies, 153–154

data files, 72–73

rectangles

imagefilledrectangle() function, 221

imagerectangle() function, 221

relational databases, 78–80

REMOTE_ADDR environment variable, 61

rename() function, 287–288

request-response sequence, 30

require directive, 139

reset() function, 273

resources, support, 308–310

restart command, 6

return statement, 48–49

RGB values, images, 220

rmdir() function, 288

round() function, 294

ROWS attribute, 29