... of, 407 PHP 3 and objects, 11 PHP 4 and objects, 12 PHP 4 and var keyword, 17, 35 PHP 5 and objects, 13 PHP 5, release features, 453 PHP 5.3 and namespaces, 14, 71 PHP 6 and objects, 14 ... checkout command, 374 configuration file, editing, 365 conflicts, identifying and handling, 370 coordinating the codebase through a central repository, 361 copy command, 373 create command, 363 ... metadata, 373 groupadd command, 363 handling version control, 319 import command, 365 importing a project directory, 364 list (ls) command, 364 maintaining parallel strands of project development,...