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The Powered Access Bible 1.2 (Development branch)
12-25-2008
The Powered Access Bible is a CGI script designed to facilitate finding verses and reading them in context, minimizing the usual mousework. It divides the screen into a search frame and a reading frame, and clicking on a search reference will load its context in the reading frame. All executable code is available under the user's choice of the Artistic, GPL, or MIT license, and the translations used are all free for non-commercial use.License: MIT/X Consortium LicenseChanges:|
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HEADER_REGISTER_CALLBACK(3) 1 HEADER_REGISTER_CALLBACK(3) header_register_callback - Call a header function SYNOPSIS
bool header_register_callback (callable $callback) DESCRIPTION
Registers a function that will be called when PHP starts sending output. The $callback is executed just after PHP prepares all headers to be sent, and before any other output is sent, creating a window to manip- ulate the outgoing headers before being sent. PARAMETERS
o $callback - Function called just before the headers are sent. It gets no parameters and the return value is ignored. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 header_register_callback(3) example <?php header('Content-Type: text/plain'); header('X-Test: foo'); function foo() { foreach (headers_list() as $header) { if (strpos($header, 'X-Powered-By:') !== false) { header_remove('X-Powered-By'); } header_remove('X-Test'); } } $result = header_register_callback('foo'); echo "a"; ?> The above example will output something similar to: Content-Type: text/plain a NOTES
header_register_callback(3) is executed just as the headers are about to be sent out, so any output from this function can break output. Note Headers will only be accessible and output when a SAPI that supports them is in use. SEE ALSO
headers_list(3), header_remove(3), header(3). PHP Documentation Group HEADER_REGISTER_CALLBACK(3)