zend_symtable_del  550 ext/spl/spl_array.c 				} else if (zend_symtable_del(ht, Z_STR_P(offset)) == FAILURE) {
zend_symtable_del 2887 ext/spl/spl_iterators.c 	zend_symtable_del(Z_ARRVAL(intern->u.caching.zcache), key);