virtual_popen     171 TSRM/tsrm_virtual_cwd.h CWD_API FILE *virtual_popen(const char *command, const char *type TSRMLS_DC);
virtual_popen     275 TSRM/tsrm_virtual_cwd.h #define VCWD_POPEN(command, type) virtual_popen(command, type TSRMLS_CC)