Often it's necessary to print messages to the output stream from
your module, just as print() would be used
within a script_ PHP offers functions for most generic tasks, such
as printing warning messages, generating output for
phpinfo(), and so on_ The following sections
provide more details_ Examples of these functions can be found on
the CD_ROM_
zend_printf()
zend_printf() works like the
standard printf(), except that it prints to Zend's
output stream_
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