l format, date function, 281
licensing, Apache, 9
lines, imageline() function, 220
<LINK> tag, 25
Linux
installing and configuring Apache on, 3–7
installing PHP on, 11–13
list boxes, 29
list() function, 272–273
local variables, 35
logical operators, 40, 257
loops. See statements
ltrim() function, 301