Add typed specialization for ZEND_COUNT (#11825)

Author: iluuu1994

Zend/zend_vm_def.h

@@ -9344,6 +9344,21 @@ ZEND_VM_COLD_CONST_HANDLER(190, ZEND_COUNT, CONST|TMPVAR|CV, UNUSED)
 	ZEND_VM_NEXT_OPCODE_CHECK_EXCEPTION();
 }
 
+ZEND_VM_TYPE_SPEC_HANDLER(ZEND_COUNT, (op1_info & (MAY_BE_ANY|MAY_BE_UNDEF|MAY_BE_REF)) == MAY_BE_ARRAY, ZEND_COUNT_ARRAY, CV|TMPVAR, UNUSED)
+{
+	USE_OPLINE
+	zend_array *ht = Z_ARRVAL_P(GET_OP1_ZVAL_PTR_UNDEF(BP_VAR_R));
+	ZVAL_LONG(EX_VAR(opline->result.var), zend_hash_num_elements(ht));
+	if (OP1_TYPE & (IS_TMP_VAR|IS_VAR) && !(GC_FLAGS(ht) & IS_ARRAY_IMMUTABLE) && !GC_DELREF(ht)) {
+		SAVE_OPLINE();
+		zend_array_destroy(ht);
+		if (EG(exception)) {
+			HANDLE_EXCEPTION();
+		}
+	}
+	ZEND_VM_NEXT_OPCODE();
+}
+
 ZEND_VM_COLD_CONST_HANDLER(191, ZEND_GET_CLASS, UNUSED|CONST|TMPVAR|CV, UNUSED)
 {
 	USE_OPLINE