S_ISREG           358 Zend/zend_virtual_cwd.h #define S_ISREG(mode)	(((mode)&S_IFMT) == S_IFREG)
S_ISREG            78 ext/fileinfo/libmagic/fsmagic.c #define S_ISREG(mode) ((mode) & _S_IFREG)
S_ISREG            52 ext/zip/lib/zip_source_filep.c #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)