PHP Developer's Dictionary- P31:PHP is an open source, server-side, HTML-embedded scripting language used to create dynamically generated Web pages. With an easy-to-use syntax and a large, extensible library of modules, PHP brings together the best of Perl, C++, and other languages. | PHP Developer s Dictionary Description The unseriaiize function which was added in PHP and PHP returns the original PHP value of str before it was serialized. The value can be an integer double string array or object. An object s methods cannot be serialized only its properties. usleep Syntax void usleep int micro seconds Description The usieep function causes script processing to pause for the number of microseconds specified by micro_seconds . PHP Options and Information PHP provides the functions that enable you to examine information about the current version of PHP that is running along with information from the operating system about the PHP process. Additionally it allows scripts to interact with the operating system environment. assert Syntax int assert string bool assertion Description The assert function which was added in PHP examines the given assertion and takes action if the result is false. If the parameter is a string it will be executed. Assertions should be used only as a debugging feature and not used for normal runtime operations. assert_options Syntax int assert_options int what mixed value IT-SC book 150 PHP Developer s Dictionary Description The assert_options function which was added in PHP enables you both to examine and set the assertion options. The fol owing options are available Option ini Setting Default Description ASSERT_ACTIVE 1 assert is on ASSERT_WARNING 1 Issues a warning for each failure ASSERT_BAIL 0 Terminates execution if assertion fails ASSERT_QUIET_EVAL 0 Disables error reporting during assertion evaluation ASSERT_CALLBACK assert_callback null Calls a user function on failed assertions error_log Syntax int error_log string message int message type string destination string extra headers Description The error_log function can send a message to a Web server s error log a TCP port or to a file. The message parameter represents the information .
