3v4l.org

run code in 300+ PHP versions simultaneously
<?php class test implements Serializable { public $a; public function __construct( $_val ){ $this->a = $_val; } public function serialize() { $tmp = (object) array(); $tmp->a = $this->a; echo serialize( $tmp ) . "\n"; return serialize( $tmp ); } public function unserialize($var) {} } $n = array(); $n[0] = new test('tmp1'); $n[1] = new test('tmp2'); print_r( unserialize( serialize( $n ) ) );

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)
8.3.40.0110.00418.92
8.3.30.0100.00319.91
8.3.20.0030.00718.71
8.3.10.0080.00021.05
8.3.00.0070.00023.61
8.2.170.0030.01022.96
8.2.160.0110.00420.55
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0030.00519.89
8.2.110.0030.00622.14
8.2.100.0070.00417.91
8.2.90.0060.00319.17
8.2.80.0030.00519.34
8.2.70.0050.00517.75
8.2.60.0030.00517.93
8.2.50.0030.00918.07
8.2.40.0090.00020.01
8.2.30.0000.00719.47
8.2.20.0040.00417.66
8.2.10.0000.00817.77
8.2.00.0030.00517.72
8.1.270.0000.00823.99
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0030.00622.53
8.1.230.0030.00820.91
8.1.220.0040.00418.77
8.1.210.0080.00418.77
8.1.200.0000.00917.47
8.1.190.0000.00717.66
8.1.180.0000.00818.10
8.1.170.0000.00818.65
8.1.160.0050.00318.82
8.1.150.0070.00018.64
8.1.140.0050.00317.51
8.1.130.0040.00417.88
8.1.120.0040.00417.45
8.1.110.0000.00717.43
8.1.100.0030.00517.50
8.1.90.0000.00717.48
8.1.80.0030.00317.43
8.1.70.0050.00317.49
8.1.60.0000.01017.61
8.1.50.0030.00517.39
8.1.40.0000.00817.50
8.1.30.0040.00417.66
8.1.20.0040.00417.57
8.1.10.0040.00417.58
8.1.00.0040.00417.43
8.0.300.0030.00620.02
8.0.290.0000.00717.28
8.0.280.0030.00318.40
8.0.270.0000.00717.32
8.0.260.0000.00618.43
8.0.250.0000.00717.04
8.0.240.0050.00216.93
8.0.230.0000.00717.06
8.0.220.0040.00416.99
8.0.210.0040.00416.92
8.0.200.0000.00617.03
8.0.190.0030.00517.02
8.0.180.0000.00816.88
8.0.170.0040.00416.98
8.0.160.0070.00016.96
8.0.150.0050.00317.00
8.0.140.0050.00516.97
8.0.130.0030.00313.40
8.0.120.0070.00016.76
8.0.110.0000.00817.00
8.0.100.0000.00816.76
8.0.90.0000.00816.98
8.0.80.0120.00316.95
8.0.70.0040.00416.91
8.0.60.0000.00816.98
8.0.50.0000.00817.03
8.0.30.0070.01217.17
8.0.20.0090.00917.40
8.0.10.0000.00716.98
8.0.00.0140.00616.69
7.4.330.0000.00516.77
7.4.320.0040.00416.42
7.4.300.0030.00316.46
7.4.290.0030.00616.60
7.4.280.0030.00516.56
7.4.270.0000.00716.50
7.4.260.0060.00013.27
7.4.250.0000.00916.58
7.4.240.0000.00716.66
7.4.230.0030.00316.47
7.4.220.0150.01316.55
7.4.210.0080.00816.55
7.4.200.0050.00216.49
7.4.190.0000.00716.46
7.4.160.0130.01016.68
7.4.150.0130.00617.40
7.4.140.0080.00917.86
7.4.130.0060.01316.38
7.4.120.0050.01216.53
7.4.110.0070.01016.59
7.4.100.0090.00916.55
7.4.90.0130.01016.44
7.4.80.0060.01819.39
7.4.70.0120.00616.41
7.4.60.0080.01216.70
7.4.50.0030.00516.68
7.4.40.0030.00722.77
7.4.30.0090.00616.75
7.4.00.0000.01314.89
7.3.330.0060.00013.43
7.3.320.0030.00313.30
7.3.310.0030.00316.39
7.3.300.0020.00516.52
7.3.290.0120.00816.43
7.3.280.0050.01116.41
7.3.270.0030.01517.40
7.3.260.0150.00718.24
7.3.250.0140.00916.53
7.3.240.0030.01516.52
7.3.230.0030.01316.50
7.3.210.0140.00416.54
7.3.200.0080.01119.39
7.3.190.0090.00916.39
7.3.180.0030.01316.53
7.3.170.0070.01016.44
7.3.160.0110.00616.38
7.3.120.0090.00614.91
7.2.330.0200.00216.68
7.2.320.0110.00716.49
7.2.310.0060.01216.80
7.2.300.0140.00716.71
7.2.290.0100.00716.58
7.1.70.0000.00917.38
7.1.60.0140.01019.17
7.1.50.0040.01216.96
7.1.00.0030.06322.43
7.0.200.0000.00916.73
7.0.140.0100.06721.98
7.0.70.0070.07721.75
7.0.60.0030.04721.80
7.0.50.0000.07321.95
7.0.40.0100.08320.13
7.0.30.0070.05720.17
7.0.20.0030.08719.95
7.0.10.0070.08020.09
7.0.00.0000.06020.03
5.6.280.0000.07321.05
5.6.220.0070.07720.51
5.6.210.0000.08320.62
5.6.200.0070.08321.04
5.6.190.0100.08021.03
5.6.180.0000.07721.07
5.6.170.0070.06321.03
5.6.160.0030.06021.11
5.6.150.0100.08021.04
5.6.140.0070.08021.06
5.6.130.0030.06320.97
5.6.120.0030.08021.13
5.6.110.0070.06321.10
5.6.100.0070.07720.95
5.6.90.0030.08021.09
5.6.80.0100.07020.41
5.6.70.0070.04320.46
5.6.60.0100.07320.38
5.6.50.0000.08020.47
5.6.40.0100.06020.40
5.6.30.0000.05720.36
5.6.20.0100.07020.36
5.6.10.0000.07720.45
5.6.00.0070.06020.36
5.5.360.0030.08320.43
5.5.350.0030.07320.38
5.5.340.0030.07720.89
5.5.330.0130.07720.92
5.5.320.0030.08720.73
5.5.310.0070.08020.89
5.5.300.0000.05320.78
5.5.290.0030.08720.77
5.5.280.0070.07320.93
5.5.270.0100.08020.75
5.5.260.0070.05320.82
5.5.250.0070.07020.72
5.5.240.0030.07320.30
5.5.230.0070.07720.13
5.5.220.0000.07720.17
5.5.210.0030.08320.21
5.5.200.0030.04320.27
5.5.190.0000.05020.24
5.5.180.0100.07320.14
5.5.160.0070.07720.25
5.5.150.0070.07320.21
5.5.140.0000.06319.99
5.5.130.0030.03720.27
5.5.120.0070.04720.18
5.5.110.0070.03720.23
5.5.100.0030.04019.98
5.5.90.0130.07020.15
5.5.80.0000.07020.07
5.5.70.0070.06320.08
5.5.60.0030.04020.08
5.5.50.0070.07020.15
5.5.40.0030.07020.11
5.5.30.0070.06720.08
5.5.20.0070.05720.09
5.5.10.0030.03720.12
5.5.00.0030.03719.95
5.4.450.0100.07319.37
5.4.440.0070.07719.36
5.4.430.0000.06019.36
5.4.420.0030.06719.39
5.4.410.0000.06719.10
5.4.400.0070.05719.12
5.4.390.0030.04719.03
5.4.380.0070.06719.21
5.4.370.0070.07719.16
5.4.360.0030.07018.94
5.4.350.0070.04319.20
5.4.340.0030.03719.05
5.4.320.0030.07718.87
5.4.310.0070.05719.05
5.4.300.0030.05319.12
5.4.290.0030.04718.89
5.4.280.0030.08019.10
5.4.270.0000.04719.20
5.4.260.0030.06318.86
5.4.250.0000.04019.03
5.4.240.0000.08019.01
5.4.230.0100.03719.03
5.4.220.0070.04019.19
5.4.210.0030.08018.93
5.4.200.0000.08019.04
5.4.190.0170.06019.02
5.4.180.0030.05319.08
5.4.170.0000.03718.93
5.4.160.0030.03718.81
5.4.150.0000.04019.10
5.4.140.0000.03716.29
5.4.130.0070.03016.35
5.4.120.0030.02716.35
5.4.110.0030.03016.50
5.4.100.0030.02716.48
5.4.90.0000.03016.33
5.4.80.0000.03016.45
5.4.70.0030.02716.28
5.4.60.0030.02716.29
5.4.50.0000.03716.47
5.4.40.0000.03716.44
5.4.30.0030.02716.29
5.4.20.0000.03016.24
5.4.10.0030.03016.36
5.4.00.0030.03015.84
5.3.290.0030.05014.70
5.3.280.0030.04314.74
5.3.270.0030.03714.63
5.3.260.0000.04014.66
5.3.250.0030.03314.54
5.3.240.0000.03714.60
5.3.230.0000.03714.74
5.3.220.0030.03314.52
5.3.210.0030.03314.69
5.3.200.0030.02714.69
5.3.190.0000.03014.56
5.3.180.0000.03314.71
5.3.170.0030.03314.62
5.3.160.0070.02314.65
5.3.150.0030.03014.66
5.3.140.0000.04014.71
5.3.130.0000.03714.64
5.3.120.0000.03314.61
5.3.110.0070.02714.50
5.3.100.0000.03314.04
5.3.90.0000.04014.08
5.3.80.0000.03013.95
5.3.70.0070.02313.99
5.3.60.0000.03014.14
5.3.50.0000.03013.93
5.3.40.0030.02713.93
5.3.30.0000.03714.02
5.3.20.0000.03013.60
5.3.10.0000.02713.65
5.3.00.0000.03013.75
5.2.170.0000.02311.21
5.2.160.0000.02711.21
5.2.150.0000.02311.18
5.2.140.0000.02311.03
5.2.130.0000.02311.03
5.2.120.0000.02311.13
5.2.110.0030.02011.16
5.2.100.0000.02311.23
5.2.90.0030.02011.03
5.2.80.0070.01711.11
5.2.70.0000.02311.00
5.2.60.0000.02311.19
5.2.50.0000.02711.11
5.2.40.0030.02010.94
5.2.30.0000.02310.88
5.2.20.0000.02311.02
5.2.10.0000.02710.77
5.2.00.0030.02010.84
5.1.60.0030.01710.11
5.1.50.0030.01710.10
5.1.40.0070.0139.84
5.1.30.0000.02010.34
5.1.20.0000.02010.50
5.1.10.0000.02010.14
5.1.00.0030.02010.07
5.0.50.0030.0139.62
5.0.40.0000.0209.62
5.0.30.0030.0309.62
5.0.20.0000.0179.62
5.0.10.0000.0179.62
5.0.00.0000.0279.62
4.4.90.0000.0139.62
4.4.80.0000.0139.62
4.4.70.0000.0139.62
4.4.60.0000.0109.62
4.4.50.0000.0139.62
4.4.40.0030.0209.62
4.4.30.0000.0139.62
4.4.20.0000.0139.62
4.4.10.0000.0139.62
4.4.00.0000.0239.62
4.3.110.0030.0139.62
4.3.100.0000.0139.62
4.3.90.0000.0109.62
4.3.80.0000.0209.62
4.3.70.0030.0109.62
4.3.60.0030.0109.62
4.3.50.0000.0139.62
4.3.40.0000.0379.62
4.3.30.0000.0139.62
4.3.20.0030.0239.62
4.3.10.0030.0379.62
4.3.00.0000.0139.62

preferences:
42.04 ms | 400 KiB | 5 Q