get_browser
actually, __halt_compiler did something, even in eval function, that things is set the constant __COMPILER_HALT_OFFSET__ to the right value
as all of you might know, PHP will change content of some magic constant like __FUNCTION__, __CLASS__, etc based on the situation. so do the __COMPILER_HALT_OFFSET__ constant, is a file specific constant, just like the __FILE__ constant, the content will be changed based on wich file the __halt_compiler() reside.
try this:
/**** whatever.php ****/
<?php
eval('echo __FILE__."(".__COMPILER_HALT_OFFSET__.")\n"; __halt_compiler();');
echo __FILE__."(".__COMPILER_HALT_OFFSET__.")\n"; __halt_compiler();
if (!isset($whatever))
{
$whatever = 'whatever';
include __FILE__;
}
__halt_compiler();whatever
__halt_compiler
(No version information available, might be only in CVS)
__halt_compiler — Halts the compiler execution
Descrição
void __halt_compiler
( void
)
Halts the execution of the compiler. This can be useful to embed data in PHP scripts, like the installation files.
Byte position of the data start can be determined by the __COMPILER_HALT_OFFSET__ constant which is defined only if there is a __halt_compiler() presented in the file.
Valor Retornado
Não há valor retornado.
Exemplos
Exemplo #1 A __halt_compiler() example
<?php
// open this file
$fp = fopen(__FILE__, 'r');
// seek file pointer to data
fseek($fp, __COMPILER_HALT_OFFSET__);
// and output it
var_dump(stream_get_contents($fp));
// the end of the script execution
__halt_compiler(); the installation data (eg. tar, gz, PHP, etc.)
Notas
Nota: __halt_compiler() can only be used from the outermost scope.
add a note
User Contributed Notes__halt_compiler
gn_shallyNOSPAM at yahoo dot com
03-Jun-2008 07:56
03-Jun-2008 07:56
zsh
12-Oct-2007 04:11
12-Oct-2007 04:11
__halt_compiler() is a language construct and therefore cannot be used as a variable function.
Also, it cannot be used in eval() -- it won't throw a syntax error, but it won't do anything either.