XCache is a fast, stable PHP opcode cacher that has been proven and is now running on production servers under high load. https://xcache.lighttpd.net/
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#include "php.h"
typedef struct {
int alloc;
zend_op_array *op_array;
HashTable *function_table;
HashTable *class_table;
} xc_compile_result_t;
xc_compile_result_t *xc_compile_result_init(xc_compile_result_t *cr,
zend_op_array *op_array,
HashTable *function_table,
HashTable *class_table);
void xc_compile_result_free(xc_compile_result_t *cr);
xc_compile_result_t *xc_compile_result_init_cur(xc_compile_result_t *cr, zend_op_array *op_array TSRMLS_DC);
/* apply func */
int xc_apply_function(zend_function *zf, apply_func_t applyer TSRMLS_DC);
int xc_apply_class(zend_class_entry *ce, apply_func_t applyer TSRMLS_DC);
int xc_apply_op_array(xc_compile_result_t *cr, apply_func_t applyer TSRMLS_DC);
int xc_undo_pass_two(zend_op_array *op_array TSRMLS_DC);
int xc_redo_pass_two(zend_op_array *op_array TSRMLS_DC);
int xc_fix_opcode(zend_op_array *op_array TSRMLS_DC);
int xc_undo_fix_opcode(zend_op_array *op_array TSRMLS_DC);
zend_uchar xc_get_fixed_opcode(zend_uchar opcode, int line);
int xc_foreach_early_binding_class(zend_op_array *op_array, void (*callback)(zend_op *opline, int oplineno, void *data TSRMLS_DC), void *data TSRMLS_DC);
/* installer */
#ifdef HAVE_XCACHE_CONSTANT
void xc_install_constant(char *filename, zend_constant *constant, zend_uchar type, zstr key, uint len TSRMLS_DC);
#endif
void xc_install_function(char *filename, zend_function *func, zend_uchar type, zstr key, uint len TSRMLS_DC);
ZESW(xc_cest_t *, void) xc_install_class(char *filename, xc_cest_t *cest, int oplineno, zend_uchar type, zstr key, uint len TSRMLS_DC);
/* sandbox */
typedef struct {
int alloc;
int orig_user_error_handler_error_reporting;
char *filename;
HashTable orig_included_files;
HashTable *tmp_included_files;
#ifdef HAVE_XCACHE_CONSTANT
HashTable *orig_zend_constants;
HashTable tmp_zend_constants;
#endif
HashTable *orig_function_table;
HashTable *orig_class_table;
HashTable tmp_function_table;
HashTable tmp_class_table;
} xc_sandbox_t;
xc_sandbox_t *xc_sandbox_init(xc_sandbox_t *sandbox, char *filename TSRMLS_DC);
void xc_sandbox_free(xc_sandbox_t *sandbox, int install TSRMLS_DC);