3v4l.org

run code in 300+ PHP versions simultaneously
<?php class T implements Serializable { protected $_data = array('a' => 1, 'b' => 2, 'c' => 3, 'd' => array( 'x', 'y', 'z', )); public function serialize() { $vars = get_object_vars($this); var_dump($vars); $vars['_data']['d'] = serialize($vars['_data']['d']); var_dump($vars); return serialize($vars); } public function unserialize($vars) {} } $t = new T; var_dump(serialize($t));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0040.01418.55
8.3.50.0130.00922.13
8.3.40.0170.00318.62
8.3.30.0110.00419.02
8.3.20.0040.00420.16
8.3.10.0040.00421.73
8.3.00.0080.00019.38
8.2.180.0070.00716.38
8.2.170.0100.01022.96
8.2.160.0100.00320.52
8.2.150.0030.00524.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0030.00619.36
8.2.110.0030.00622.13
8.2.100.0040.00817.91
8.2.90.0030.00619.17
8.2.80.0040.00417.97
8.2.70.0060.00317.38
8.2.60.0050.00518.05
8.2.50.0060.00318.07
8.2.40.0030.00618.16
8.2.30.0090.00018.09
8.2.20.0080.00017.80
8.2.10.0070.00018.05
8.2.00.0000.00817.85
8.1.280.0120.00325.92
8.1.270.0080.00018.88
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0080.00317.48
8.1.230.0110.00021.02
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0030.00617.25
8.1.190.0040.00417.13
8.1.180.0080.00318.10
8.1.170.0080.00018.41
8.1.160.0040.00421.89
8.1.150.0030.00718.95
8.1.140.0030.00617.48
8.1.130.0000.00717.75
8.1.120.0080.00017.40
8.1.110.0020.00517.49
8.1.100.0040.00417.45
8.1.90.0000.00717.33
8.1.80.0050.00217.34
8.1.70.0030.00517.34
8.1.60.0030.00617.65
8.1.50.0030.00517.52
8.1.40.0050.00317.57
8.1.30.0030.00617.55
8.1.20.0000.00817.57
8.1.10.0040.00417.57
8.1.00.0000.00717.39
8.0.300.0080.00018.77
8.0.290.0000.00816.75
8.0.280.0040.00418.36
8.0.270.0000.00717.30
8.0.260.0000.00817.36
8.0.250.0070.00016.86
8.0.240.0030.00316.98
8.0.230.0000.00716.85
8.0.220.0000.00616.90
8.0.210.0000.00716.81
8.0.200.0060.00016.94
8.0.190.0080.00016.95
8.0.180.0040.00416.82
8.0.170.0000.00816.81
8.0.160.0070.00016.90
8.0.150.0040.00416.71
8.0.140.0040.00416.89
8.0.130.0030.00313.30
8.0.120.0040.00416.91
8.0.110.0000.00816.87
8.0.100.0000.00816.69
8.0.90.0050.00216.93
8.0.80.0150.00416.83
8.0.70.0040.00416.89
8.0.60.0000.00716.77
8.0.50.0070.00016.86
8.0.30.0080.01017.17
8.0.20.0060.01717.40
8.0.10.0040.00417.05
8.0.00.0080.01016.80
7.4.330.0000.00615.03
7.4.320.0060.00016.56
7.4.300.0000.00616.38
7.4.290.0040.00416.41
7.4.280.0080.00016.50
7.4.270.0000.00716.63
7.4.260.0070.00016.52
7.4.250.0040.00416.57
7.4.240.0020.00616.58
7.4.230.0030.00316.68
7.4.220.0160.01416.49
7.4.210.0090.00916.61
7.4.200.0000.00716.67
7.4.160.0090.00616.37
7.4.150.0210.02117.40
7.4.140.0070.01517.86
7.4.130.0120.00716.48
7.4.120.0100.00816.45
7.4.110.0100.01016.63
7.4.100.0150.00316.52
7.4.90.0100.00716.46
7.4.80.0160.00919.39
7.4.70.0100.00716.28
7.4.60.0100.01316.70
7.4.50.0000.00416.46
7.4.40.0110.00716.58
7.4.30.0110.00716.44
7.4.00.0050.01215.10
7.3.330.0000.00513.25
7.3.320.0070.00713.29
7.3.310.0000.00716.20
7.3.300.0080.00016.08
7.3.290.0060.00816.33
7.3.280.0070.00816.34
7.3.270.0070.01117.40
7.3.260.0100.01016.34
7.3.250.0190.00216.32
7.3.240.0120.00616.55
7.3.230.0150.00316.39
7.3.210.0070.01416.36
7.3.200.0060.01619.39
7.3.190.0070.01316.55
7.3.180.0090.00916.51
7.3.170.0090.01516.34
7.3.160.0100.01016.46
7.3.120.0100.00714.54
7.3.110.0030.01314.83
7.3.100.0030.01315.04
7.3.90.0120.00014.63
7.3.80.0070.01114.73
7.3.70.0090.00614.77
7.3.60.0040.00714.55
7.3.50.0040.01114.80
7.3.40.0170.00314.97
7.3.30.0060.00614.87
7.3.20.0030.00616.76
7.3.10.0040.01216.66
7.3.00.0060.00616.70
7.2.330.0090.00916.43
7.2.320.0110.00716.70
7.2.310.0090.00916.86
7.2.300.0130.00316.65
7.2.290.0030.01616.56
7.2.250.0090.00914.79
7.2.240.0060.01014.87
7.2.230.0070.00715.13
7.2.220.0030.01015.30
7.2.210.0070.00714.94
7.2.200.0120.00314.98
7.2.190.0080.01215.05
7.2.180.0100.00715.16
7.2.170.0060.00914.84
7.2.00.0040.00719.37
7.1.330.0070.00715.51
7.1.320.0110.00015.88
7.1.310.0090.00615.51
7.1.300.0040.01115.77
7.1.290.0110.00815.86
7.1.280.0100.00315.92
7.1.270.0030.01515.95
7.1.260.0060.00315.60
7.1.100.0060.00618.19
7.1.70.0040.00417.23
7.1.60.0040.02219.50
7.1.50.0040.00716.63
7.1.00.0100.07022.31
7.0.200.0070.00315.03
7.0.140.0070.07021.97
7.0.60.0070.08320.05
7.0.50.0100.08017.89
7.0.40.0100.08320.09
7.0.30.0170.04720.23
7.0.20.0230.05720.19
7.0.10.0270.08020.25
7.0.00.0100.08320.23
5.6.280.0070.06721.14
5.6.210.0130.08020.70
5.6.200.0100.05718.18
5.6.190.0170.08020.64
5.6.180.0100.04720.74
5.6.170.0370.06320.45
5.6.160.0100.03720.57
5.6.150.0100.07318.21
5.6.140.0030.08318.16
5.6.130.0130.06018.27
5.6.120.0030.07021.12
5.6.110.0100.08021.15
5.6.100.0030.08720.99
5.6.90.0100.06320.99
5.6.80.0100.06020.39
5.6.70.0200.06320.38
5.5.350.0300.05320.44
5.5.340.0100.07017.99
5.5.330.0000.04320.29
5.5.320.0030.08320.21
5.5.310.0330.05320.23
5.5.300.0130.03318.04
5.5.290.0070.05017.97
5.5.280.0070.04320.81
5.5.270.0130.05020.73
5.5.260.0030.04720.88
5.5.250.0070.03720.79
5.5.240.0030.04020.13
5.4.450.0230.05319.63
5.4.440.0170.06319.44
5.4.430.1130.06319.55
5.4.420.0230.05019.62
5.4.410.0100.05718.71
5.4.400.0200.07718.90
5.4.390.0200.05018.73
5.4.380.0200.05318.73
5.4.370.1700.06718.53
5.4.360.0300.05318.81
5.4.350.0170.07318.70
5.4.340.0300.04718.63
5.4.320.0170.05718.78
5.4.310.0200.05318.47
5.4.300.1870.06718.75
5.4.290.0230.05318.75
5.4.280.0170.07018.52
5.4.270.0200.06018.58
5.4.260.0230.06718.77
5.4.250.2400.07718.80
5.4.240.1470.05318.75
5.4.230.0230.04718.58
5.4.220.0170.06018.55
5.4.210.0070.06018.52
5.4.200.1170.05316.67
5.4.190.0270.05718.68
5.4.180.0170.06018.75
5.4.170.0300.05718.79
5.4.160.0300.04018.71
5.4.150.1430.04718.50
5.4.140.1170.05716.23
5.4.130.0330.06316.42
5.4.120.0300.06716.27
5.4.110.0300.06316.30
5.4.100.1230.04716.18
5.4.90.0270.05716.45
5.4.80.0100.06316.32
5.4.70.0170.05716.19
5.4.60.0270.04716.13
5.4.50.0470.05016.34
5.4.40.1100.05716.27
5.4.30.0270.06716.13
5.4.20.0270.06716.30
5.4.10.0270.06316.33
5.4.00.0300.06015.90
5.3.290.0270.07314.78
5.3.280.0170.05714.59
5.3.270.0330.06314.61
5.3.260.0300.06314.82
5.3.250.0130.06014.66
5.3.240.0230.07714.61
5.3.230.0200.05014.60
5.3.220.0200.05014.68
5.3.210.0130.06014.62
5.3.200.1870.07314.59
5.3.190.0330.06014.67
5.3.180.0270.04714.60
5.3.170.0100.06314.67
5.3.160.1230.05014.69
5.3.150.0300.06014.66
5.3.140.0270.05314.54
5.3.130.0270.06314.69
5.3.120.0230.05314.55
5.3.110.0230.07314.57
5.3.100.0230.05714.04
5.3.90.0300.04714.13
5.3.80.0170.07014.04
5.3.70.0270.05314.07
5.3.60.0170.06014.12
5.3.50.1070.04014.05
5.3.40.0230.05714.00
5.3.30.0870.05714.12
5.3.20.0230.05013.80
5.3.10.1030.04713.66
5.3.00.0170.06013.70
5.2.170.0230.04311.20
5.2.160.0270.04711.38
5.2.150.0500.04311.27
5.2.140.1130.05311.26
5.2.130.0270.05711.33
5.2.120.0230.05011.11
5.2.110.0230.03311.15
5.2.100.0100.04311.16
5.2.90.0130.05711.13
5.2.80.0130.04711.08
5.2.70.0230.04011.15
5.2.60.0200.04311.11
5.2.50.1130.04711.07
5.2.40.0170.04311.05
5.2.30.0230.03711.03
5.2.20.0200.04310.99
5.2.10.0230.05310.97
5.2.00.0270.04010.72
5.1.60.0200.04310.02
5.1.50.0170.03010.00
5.1.40.0230.04310.12
5.1.30.0100.04310.34
5.1.20.0130.04310.36
5.1.10.0070.04710.25
5.1.00.0830.04710.10
5.0.50.0170.0378.66
5.0.40.0170.0238.55
5.0.30.0100.0508.27
5.0.20.0130.0378.41
5.0.10.0070.0438.22
5.0.00.0770.0478.15
4.4.90.0130.0175.90
4.4.80.0100.0206.00
4.4.70.0170.0175.89
4.4.60.0100.0275.93
4.4.50.0100.0205.93
4.4.40.0100.0375.89
4.4.30.0800.0235.97
4.4.20.0100.0276.01
4.4.10.0170.0135.97
4.4.00.0100.0375.96
4.3.110.0070.0275.83
4.3.100.0100.0205.93
4.3.90.0370.0235.93
4.3.80.0800.0375.80
4.3.70.0730.0275.82
4.3.60.0370.0375.81
4.3.50.0470.0335.79
4.3.40.0270.0405.77
4.3.30.1530.0234.59
4.3.20.0100.0234.52
4.3.10.0000.0304.50
4.3.00.0100.0176.95

preferences:
45.32 ms | 401 KiB | 5 Q