3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 0; $a = &$x; $b = &$a; $x = 2; unset($x); $b++; echo $a . ', ' . $b;

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)
8.3.60.0110.00418.68
8.3.50.0090.00821.07
8.3.40.0120.00918.89
8.3.30.0100.00319.04
8.3.20.0080.00020.16
8.3.10.0020.00523.69
8.3.00.0040.00419.26
8.2.180.0110.00416.50
8.2.170.0110.00422.96
8.2.160.0150.00320.52
8.2.150.0050.00324.18
8.2.140.0030.00524.66
8.2.130.0040.00426.16
8.2.120.0080.00022.09
8.2.110.0040.00422.17
8.2.100.0070.00417.73
8.2.90.0030.00519.17
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0070.00418.04
8.2.50.0030.00518.07
8.2.40.0060.00320.07
8.2.30.0080.00017.99
8.2.20.0040.00417.79
8.2.10.0000.00717.98
8.2.00.0050.00317.75
8.1.280.0140.00325.92
8.1.270.0030.00521.93
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0090.00023.79
8.1.230.0070.00318.98
8.1.220.0050.00317.74
8.1.210.0050.00318.77
8.1.200.0030.00617.25
8.1.190.0050.00317.00
8.1.180.0030.00518.10
8.1.170.0070.00318.64
8.1.160.0070.00022.05
8.1.150.0050.00218.92
8.1.140.0070.00017.35
8.1.130.0000.00617.70
8.1.120.0030.00317.43
8.1.110.0040.00417.44
8.1.100.0070.00017.30
8.1.90.0040.00417.46
8.1.80.0070.00017.52
8.1.70.0040.00417.34
8.1.60.0000.00917.52
8.1.50.0000.00817.42
8.1.40.0030.00517.54
8.1.30.0050.00317.67
8.1.20.0030.00517.54
8.1.10.0040.00417.41
8.1.00.0080.00017.46
8.0.300.0090.00018.77
8.0.290.0000.00716.75
8.0.280.0000.00718.43
8.0.270.0070.00017.27
8.0.260.0000.00717.18
8.0.250.0050.00216.96
8.0.240.0030.00316.96
8.0.230.0050.00316.97
8.0.220.0070.00016.88
8.0.210.0000.00716.88
8.0.200.0000.00616.96
8.0.190.0060.00316.83
8.0.180.0040.00416.93
8.0.170.0040.00416.81
8.0.160.0030.00616.82
8.0.150.0070.00016.89
8.0.140.0000.00716.84
8.0.130.0090.00013.35
8.0.120.0000.00816.82
8.0.110.0080.00016.83
8.0.100.0050.00216.78
8.0.90.0000.00816.77
8.0.80.0090.01216.89
8.0.70.0000.00716.89
8.0.60.0050.00216.79
8.0.50.0040.00416.87
8.0.30.0070.01216.96
8.0.20.0060.01717.40
8.0.10.0030.00616.89
8.0.00.0060.01216.66
7.4.330.0070.00015.02
7.4.320.0000.00716.57
7.4.300.0030.00316.39
7.4.290.0030.00316.44
7.4.280.0040.00416.58
7.4.270.0030.00316.63
7.4.260.0030.00316.45
7.4.250.0040.00416.61
7.4.240.0050.00216.51
7.4.230.0000.00716.46
7.4.220.0100.01016.39
7.4.210.0070.01016.30
7.4.200.0000.00716.52
7.4.160.0030.01416.30
7.4.150.0110.00717.40
7.4.140.0120.00717.86
7.4.130.0080.00816.41
7.4.120.0090.00716.36
7.4.110.0060.01116.57
7.4.100.0120.00416.52
7.4.90.0130.00316.46
7.4.80.0100.01019.39
7.4.70.0070.01016.49
7.4.60.0130.00916.35
7.4.50.0050.00016.29
7.4.40.0110.00616.64
7.4.30.0100.01016.09
7.4.10.0110.00714.73
7.4.00.0060.01214.95
7.3.330.0050.00013.09
7.3.320.0030.00313.09
7.3.310.0030.00316.39
7.3.300.0050.00216.25
7.3.290.0090.00816.19
7.3.280.0040.01116.23
7.3.270.0160.00717.40
7.3.260.0110.00616.29
7.3.250.0080.01216.27
7.3.240.0110.00716.28
7.3.230.0130.00316.39
7.3.210.0140.00716.47
7.3.200.0060.01019.39
7.3.190.0030.01316.23
7.3.180.0000.01716.34
7.3.170.0060.01316.43
7.3.160.0100.00616.40
7.3.130.0060.00914.73
7.3.120.0060.00914.85
7.3.110.0070.01014.79
7.3.100.0080.00814.92
7.3.90.0090.00515.00
7.3.80.0030.01114.69
7.3.70.0060.00614.69
7.3.60.0040.00714.70
7.3.50.0050.01014.78
7.3.40.0050.01014.71
7.3.30.0040.01114.82
7.3.20.0060.00616.50
7.3.10.0060.00816.66
7.3.00.0070.00616.53
7.2.330.0150.00316.56
7.2.320.0040.01316.65
7.2.310.0080.01516.75
7.2.300.0100.00716.57
7.2.290.0070.01016.47
7.2.260.0070.01315.11
7.2.250.0010.01614.91
7.2.240.0070.01215.17
7.2.230.0020.01115.18
7.2.220.0080.00614.77
7.2.210.0080.00815.03
7.2.200.0040.00915.13
7.2.190.0100.00714.99
7.2.180.0060.00814.90
7.2.170.0020.01115.09
7.2.160.0030.01215.08
7.2.150.0060.01016.79
7.2.140.0070.00516.99
7.2.130.0090.00416.77
7.2.120.0040.01116.74
7.2.110.0050.00716.74
7.2.100.0070.00716.78
7.2.90.0070.00616.77
7.2.80.0070.00816.88
7.2.70.0050.01016.90
7.2.60.0060.00816.76
7.2.50.0060.00716.75
7.2.40.0050.00916.95
7.2.30.0040.00916.91
7.2.20.0020.00816.86
7.2.10.0060.00716.67
7.2.00.0060.00717.34
7.1.330.0070.00915.75
7.1.320.0110.00315.80
7.1.310.0050.01015.68
7.1.300.0090.00615.84
7.1.290.0000.01115.77
7.1.280.0030.00615.50
7.1.270.0040.00615.48
7.1.260.0050.00915.67
7.1.250.0040.01015.69
7.1.240.0050.00515.47
7.1.230.0080.00515.45
7.1.220.0050.00815.63
7.1.210.0070.00715.54
7.1.200.0060.00615.51
7.1.190.0070.00815.71
7.1.180.0030.01015.57
7.1.170.0070.00715.60
7.1.160.0060.00815.62
7.1.150.0050.00915.68
7.1.140.0060.00415.66
7.1.130.0080.00315.56
7.1.120.0080.00415.70
7.1.110.0070.00615.58
7.1.100.0060.00816.04
7.1.90.0040.00815.73
7.1.80.0060.00515.60
7.1.70.0050.00715.92
7.1.60.0070.00816.29
7.1.50.0080.00815.98
7.1.40.0070.00815.57
7.1.30.0050.00815.49
7.1.20.0040.00915.56
7.1.10.0040.01015.60
7.1.00.0070.02016.83
7.0.330.0060.00615.27
7.0.320.0070.00615.31
7.0.310.0030.01015.35
7.0.300.0050.00815.29
7.0.290.0040.00915.15
7.0.280.0060.00815.28
7.0.270.0040.00715.23
7.0.260.0070.00315.25
7.0.250.0040.00715.42
7.0.240.0070.00715.27
7.0.230.0070.00615.39
7.0.220.0040.01015.39
7.0.210.0060.01015.27
7.0.200.0040.00615.60
7.0.190.0080.00615.34
7.0.180.0070.00615.24
7.0.170.0050.00815.35
7.0.160.0060.00715.25
7.0.150.0060.00915.32
7.0.140.0050.01916.58
7.0.130.0070.00415.26
7.0.120.0060.00615.35
7.0.110.0060.00615.38
7.0.100.0050.00815.33
7.0.90.0060.00615.30
7.0.80.0020.00915.33
7.0.70.0080.00315.29
7.0.60.0050.02016.20
7.0.50.0060.01415.78
7.0.40.0050.01814.73
7.0.30.0090.01814.65
7.0.20.0120.01414.69
7.0.10.0080.02414.74
7.0.00.0070.02314.62
5.6.400.0030.01014.42
5.6.390.0050.00814.47
5.6.380.0030.01114.27
5.6.370.0060.00714.22
5.6.360.0060.00814.25
5.6.350.0070.00714.47
5.6.340.0040.00914.38
5.6.330.0040.00514.10
5.6.320.0060.00714.24
5.6.310.0040.01114.24
5.6.300.0030.01014.38
5.6.290.0030.00914.40
5.6.280.0080.01815.55
5.6.270.0070.00514.47
5.6.260.0060.00714.42
5.6.250.0070.00614.15
5.6.240.0040.00814.21
5.6.230.0060.00614.21
5.6.220.0070.00514.11
5.6.210.0060.02015.49
5.6.200.0040.02115.05
5.6.190.0070.02115.46
5.6.180.0740.01715.65
5.6.170.0160.01615.53
5.6.160.0070.01215.47
5.6.150.0070.02115.10
5.6.140.0060.02015.19
5.6.130.0030.02315.02
5.6.120.0060.01415.56
5.6.110.0080.01715.64
5.6.100.0040.02315.57
5.6.90.0120.01715.61
5.6.80.0070.01815.31
5.6.70.0910.01615.34
5.6.60.0060.00614.15
5.6.50.0050.00814.14
5.6.40.0060.00714.20
5.6.30.0050.00814.14
5.6.20.0070.00814.22
5.6.10.0090.00314.17
5.6.00.0080.00514.23
5.5.380.0050.00512.70
5.5.370.0020.01012.67
5.5.360.0050.00512.70
5.5.350.0070.02214.15
5.5.340.0090.01213.72
5.5.330.0060.01414.21
5.5.320.0080.01414.13
5.5.310.0120.01814.23
5.5.300.0060.02113.74
5.5.290.0060.01313.75
5.5.280.0110.01214.30
5.5.270.0060.02214.21
5.5.260.0090.02114.37
5.5.250.0070.01614.24
5.5.240.0050.02214.09
5.5.230.0040.00812.66
5.5.220.0030.00712.57
5.5.210.0040.00812.69
5.5.200.0060.00412.52
5.5.190.0060.00512.56
5.5.180.0050.00512.59
5.5.170.0060.00612.64
5.5.160.0060.00512.63
5.5.150.0040.00712.71
5.5.140.0060.00612.59
5.5.130.0060.00612.65
5.5.120.0030.00712.73
5.5.110.0030.00912.47
5.5.100.0040.00712.60
5.5.90.0030.00712.57
5.5.80.0020.00912.60
5.5.70.0050.00812.48
5.5.60.0070.00612.64
5.5.50.0040.00712.53
5.5.40.0040.00912.46
5.5.30.0050.00612.50
5.5.20.0030.00712.59
5.5.10.0050.00412.50
5.5.00.0010.01012.50
5.4.450.0130.01112.77
5.4.440.0200.01212.69
5.4.430.0190.01612.65
5.4.420.0160.00312.74
5.4.410.0170.00312.72
5.4.400.0170.00412.61
5.4.390.0140.00712.64
5.4.380.0230.00212.66
5.4.370.0140.00612.68
5.4.360.0150.00612.68
5.4.350.0160.00512.54
5.4.340.0060.01211.17
5.4.330.0030.00611.01
5.4.320.0060.01111.23
5.4.310.0030.01511.32
5.4.300.0040.01211.27
5.4.290.0040.01311.26
5.4.280.0060.01011.30
5.4.270.0040.01211.28
5.4.260.0040.01211.30
5.4.250.0040.01211.22
5.4.240.0020.01511.29
5.4.230.0070.01211.14
5.4.220.0060.01111.33
5.4.210.0040.01211.32
5.4.200.0050.01111.33
5.4.190.0040.01211.25
5.4.180.0040.01211.30
5.4.170.0040.01311.28
5.4.160.0030.01411.29
5.4.150.0040.01111.29
5.4.140.0060.01011.13
5.4.130.0040.01211.21
5.4.120.0070.01011.17
5.4.110.0040.01211.18
5.4.100.0060.01311.23
5.4.90.0060.01111.11
5.4.80.0050.01011.23
5.4.70.0050.01111.19
5.4.60.0040.01111.21
5.4.50.0030.01411.17
5.4.40.0050.01211.20
5.4.30.0030.01511.24
5.4.20.0050.01211.21
5.4.10.0050.01211.20
5.4.00.0040.01211.08
5.3.290.0020.02011.52
5.3.280.0060.01211.36
5.3.270.0050.01911.36
5.3.260.0070.01411.44
5.3.250.0060.01711.44
5.3.240.0050.01711.38
5.3.230.0040.01711.38
5.3.220.0040.01611.29
5.3.210.0030.01611.35
5.3.200.0020.02211.29
5.3.190.0060.01511.37
5.3.180.0040.01911.34
5.3.170.0060.02111.40
5.3.160.0010.02111.34
5.3.150.0060.01911.39
5.3.140.0050.01511.32
5.3.130.0040.01811.36
5.3.120.0070.01411.32
5.3.110.0040.01811.34
5.3.100.0040.01611.22
5.3.90.0030.01611.23
5.3.80.0070.01411.20
5.3.70.0040.01511.16
5.3.60.0050.01711.21
5.3.50.0070.01211.14
5.3.40.0050.01611.11
5.3.30.0080.01311.13
5.3.20.0080.01111.07
5.3.10.0040.01411.02
5.3.00.0020.01810.93
5.2.170.0030.01610.09
5.2.160.0040.01310.09
5.2.150.0030.01510.09
5.2.140.0030.01410.09
5.2.130.0040.01310.08
5.2.120.0060.01110.08
5.2.110.0030.01410.08
5.2.100.0040.01310.08
5.2.90.0060.01110.08
5.2.80.0040.01210.08
5.2.70.0040.01210.08
5.2.60.0050.01210.06
5.2.50.0050.01310.05
5.2.40.0010.01610.04
5.2.30.0030.01610.03
5.2.20.0030.01410.03
5.2.10.0020.01410.01
5.2.00.0020.0139.96
5.1.60.0040.0109.73
5.1.50.0020.0119.72
5.1.40.0010.0129.72
5.1.30.0050.0109.83
5.1.20.0050.0109.84
5.1.10.0040.0119.75
5.1.00.0030.0119.75
5.0.50.0020.0109.24
5.0.40.0040.0099.19
5.0.30.0060.0129.13
5.0.20.0050.0079.12
5.0.10.0010.0119.12
5.0.00.0030.0129.11
4.4.90.0020.0088.63
4.4.80.0030.0078.62
4.4.70.0020.0088.62
4.4.60.0030.0078.62
4.4.50.0030.0078.63
4.4.40.0010.0128.60
4.4.30.0020.0088.62
4.4.20.0030.0068.65
4.4.10.0030.0088.65
4.4.00.0040.0088.62
4.3.110.0030.0078.59
4.3.100.0030.0098.59
4.3.90.0000.0108.58
4.3.80.0040.0098.56
4.3.70.0010.0078.58
4.3.60.0010.0078.58
4.3.50.0040.0078.58
4.3.40.0030.0108.54
4.3.30.0020.0098.13
4.3.20.0030.0088.12
4.3.10.0020.0088.11
4.3.00.0100.00811.12

preferences:
47.41 ms | 401 KiB | 5 Q