diff --git a/tests/zend/trigger_error_basic.phpt b/tests/zend/trigger_error_basic.phpt
new file mode 100644
index 00000000..d492590b
--- /dev/null
+++ b/tests/zend/trigger_error_basic.phpt
@@ -0,0 +1,33 @@
+--TEST--
+trigger_error() tests
+--FILE--
+<?php
+
+var_dump(trigger_error("error"));
+
+try {
+    var_dump(trigger_error("error", -1));
+} catch (\ValueError $e) {
+    echo $e->getMessage() . \PHP_EOL;
+}
+try {
+    var_dump(trigger_error("error", 0));
+} catch (\ValueError $e) {
+    echo $e->getMessage() . \PHP_EOL;
+}
+
+var_dump(trigger_error("error", E_USER_WARNING));
+var_dump(trigger_error("error", E_USER_DEPRECATED));
+
+?>
+--EXPECTF--
+Notice: error in %s on line %d
+bool(true)
+trigger_error(): Argument #2 ($error_level) must be one of E_USER_ERROR, E_USER_WARNING, E_USER_NOTICE, or E_USER_DEPRECATED
+trigger_error(): Argument #2 ($error_level) must be one of E_USER_ERROR, E_USER_WARNING, E_USER_NOTICE, or E_USER_DEPRECATED
+
+Warning: error in %s on line %d
+bool(true)
+
+Deprecated: error in %s on line %d
+bool(true)
diff --git a/tests/zend/zend_signed_multiply-64bit-2.phpt b/tests/zend/zend_signed_multiply-64bit-2.phpt
new file mode 100644
index 00000000..dab3050e
--- /dev/null
+++ b/tests/zend/zend_signed_multiply-64bit-2.phpt
@@ -0,0 +1,148 @@
+--TEST--
+Zend signed multiply 64-bit, variation 2
+--SKIPIF--
+<?php if ((1 << 31) < 0) print "skip Running on 32-bit target"; ?>
+--FILE--
+<?php
+for($c = -16; $c < 0; $c++) {
+        var_dump($c, intdiv(PHP_INT_MIN, 10), intdiv(PHP_INT_MIN, 10) * $c);
+    echo "-----------\n";
+}
+for($c = 0; $c <= 16; $c++) {
+        var_dump($c, intdiv(PHP_INT_MAX, 10), intdiv(PHP_INT_MAX, 10) * $c);
+    echo "-----------\n";
+}
+?>
+--EXPECT--
+int(-16)
+int(-922337203685477580)
+float(1.4757395258967642E+19)
+-----------
+int(-15)
+int(-922337203685477580)
+float(1.3835058055282164E+19)
+-----------
+int(-14)
+int(-922337203685477580)
+float(1.2912720851596687E+19)
+-----------
+int(-13)
+int(-922337203685477580)
+float(1.1990383647911209E+19)
+-----------
+int(-12)
+int(-922337203685477580)
+float(1.1068046444225733E+19)
+-----------
+int(-11)
+int(-922337203685477580)
+float(1.0145709240540254E+19)
+-----------
+int(-10)
+int(-922337203685477580)
+int(9223372036854775800)
+-----------
+int(-9)
+int(-922337203685477580)
+int(8301034833169298220)
+-----------
+int(-8)
+int(-922337203685477580)
+int(7378697629483820640)
+-----------
+int(-7)
+int(-922337203685477580)
+int(6456360425798343060)
+-----------
+int(-6)
+int(-922337203685477580)
+int(5534023222112865480)
+-----------
+int(-5)
+int(-922337203685477580)
+int(4611686018427387900)
+-----------
+int(-4)
+int(-922337203685477580)
+int(3689348814741910320)
+-----------
+int(-3)
+int(-922337203685477580)
+int(2767011611056432740)
+-----------
+int(-2)
+int(-922337203685477580)
+int(1844674407370955160)
+-----------
+int(-1)
+int(-922337203685477580)
+int(922337203685477580)
+-----------
+int(0)
+int(922337203685477580)
+int(0)
+-----------
+int(1)
+int(922337203685477580)
+int(922337203685477580)
+-----------
+int(2)
+int(922337203685477580)
+int(1844674407370955160)
+-----------
+int(3)
+int(922337203685477580)
+int(2767011611056432740)
+-----------
+int(4)
+int(922337203685477580)
+int(3689348814741910320)
+-----------
+int(5)
+int(922337203685477580)
+int(4611686018427387900)
+-----------
+int(6)
+int(922337203685477580)
+int(5534023222112865480)
+-----------
+int(7)
+int(922337203685477580)
+int(6456360425798343060)
+-----------
+int(8)
+int(922337203685477580)
+int(7378697629483820640)
+-----------
+int(9)
+int(922337203685477580)
+int(8301034833169298220)
+-----------
+int(10)
+int(922337203685477580)
+int(9223372036854775800)
+-----------
+int(11)
+int(922337203685477580)
+float(1.0145709240540254E+19)
+-----------
+int(12)
+int(922337203685477580)
+float(1.1068046444225733E+19)
+-----------
+int(13)
+int(922337203685477580)
+float(1.1990383647911209E+19)
+-----------
+int(14)
+int(922337203685477580)
+float(1.2912720851596687E+19)
+-----------
+int(15)
+int(922337203685477580)
+float(1.3835058055282164E+19)
+-----------
+int(16)
+int(922337203685477580)
+float(1.4757395258967642E+19)
+-----------
diff --git a/tests/zend/zend_signed_multiply-64bit.phpt b/tests/zend/zend_signed_multiply-64bit.phpt
new file mode 100644
index 00000000..2f0425dd
--- /dev/null
+++ b/tests/zend/zend_signed_multiply-64bit.phpt
@@ -0,0 +1,14 @@
+--TEST--
+Zend signed multiply 64-bit, variation 1
+--SKIPIF--
+<?php if ((1 << 31) < 0) print "skip Running on 32-bit target"; ?>
+--FILE--
+<?php
+var_dump(0x80000000 * -0xffffffff);
+var_dump(0x80000001 * 0xfffffffe);
+var_dump(0x80000001 * -0xffffffff);
+?>
+--EXPECT--
+int(-9223372034707292160)
+int(9223372036854775806)
+int(9223372034707292161)
diff --git a/tests/zend/zend_strtod.phpt b/tests/zend/zend_strtod.phpt
new file mode 100644
index 00000000..af7b6128
--- /dev/null
+++ b/tests/zend/zend_strtod.phpt
@@ -0,0 +1,19 @@
+--TEST--
+zend_strtod() leaks on big doubles
+--INI--
+precision=14
+--FILE--
+<?php
+var_dump("1139932690.21688500" - "1139932790.21688500");
+var_dump("1139932690000.21688500" - "331139932790.21688500");
+var_dump("339932690.21688500" - "4564645646456463461139932790.21688500");
+var_dump("123123139932690.21688500" - "11399327900000000.21688500");
+
+echo "Done\n";
+?>
+--EXPECT--
+float(-100)
+float(808792757210)
+float(-4.5646456464564635E+27)
+float(-11276204760067310)
+Done