3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 0; $a = array(&$x); // [&0] $b = $a; // [&0] $x = 2; // a=[&2], b=[&2] //unset($x); // //$b[1]++; $b[0]++; echo $a[0], ' ', $b[0];

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)
8.3.40.0130.00718.76
8.3.30.0120.00319.22
8.3.20.0000.00720.07
8.3.10.0120.00621.78
8.3.00.0050.00319.38
8.2.170.0200.00022.96
8.2.160.0030.01020.35
8.2.150.0130.00624.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0000.00722.18
8.2.110.0000.00820.54
8.2.100.0070.00718.03
8.2.90.0040.00419.35
8.2.80.0000.00817.97
8.2.70.0050.00317.63
8.2.60.0040.00418.05
8.2.50.0080.00018.07
8.2.40.0040.00419.92
8.2.30.0000.00718.12
8.2.20.0050.00217.66
8.2.10.0040.00417.98
8.2.00.0090.00017.77
8.1.270.0090.00923.74
8.1.260.0090.00926.35
8.1.250.0040.00428.09
8.1.240.0060.00323.88
8.1.230.0040.00719.08
8.1.220.0030.00517.79
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0040.00417.22
8.1.180.0060.00318.10
8.1.170.0000.00818.46
8.1.160.0000.00721.90
8.1.150.0050.00218.75
8.1.140.0040.00417.44
8.1.130.0060.00317.72
8.1.120.0000.00717.46
8.1.110.0030.00517.35
8.1.100.0040.00417.43
8.1.90.0050.00217.48
8.1.80.0030.00417.46
8.1.70.0000.00717.45
8.1.60.0030.00617.43
8.1.50.0060.00317.51
8.1.40.0040.00417.48
8.1.30.0070.00317.55
8.1.20.0070.00017.53
8.1.10.0040.00417.45
8.1.00.0040.00417.35
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0030.00318.44
8.0.270.0080.00017.12
8.0.260.0000.00717.16
8.0.250.0000.00716.98
8.0.240.0000.00716.86
8.0.230.0030.00316.86
8.0.220.0030.00316.87
8.0.210.0040.00416.77
8.0.200.0060.00016.85
8.0.190.0040.00416.79
8.0.180.0070.00016.90
8.0.170.0000.00816.89
8.0.160.0000.00816.92
8.0.150.0070.00016.77
8.0.140.0040.00416.88
8.0.130.0060.00013.40
8.0.120.0040.00416.74
8.0.110.0030.00416.90
8.0.100.0070.00016.74
8.0.90.0040.00416.75
8.0.80.0070.00716.75
8.0.70.0020.00516.75
8.0.60.0030.00316.73
8.0.50.0000.00716.90
8.0.30.0140.00717.01
8.0.20.0140.00517.40
8.0.10.0050.00217.07
8.0.00.0090.01116.88
7.4.330.0000.00615.00
7.4.320.0000.00616.63
7.4.300.0030.00316.48
7.4.290.0000.00716.45
7.4.280.0060.00416.57
7.4.270.0030.00316.63
7.4.260.0030.00316.59
7.4.250.0070.00016.47
7.4.240.0000.00716.53
7.4.230.0070.00016.23
7.4.220.0150.00416.68
7.4.210.0030.01116.59
7.4.200.0000.00716.60
7.4.160.0050.01016.64
7.4.150.0160.00617.40
7.4.140.0100.01017.86
7.4.130.0200.00416.49
7.4.120.0090.00816.46
7.4.110.0120.00316.54
7.4.100.0060.01116.57
7.4.90.0110.00516.54
7.4.80.0060.01319.39
7.4.70.0100.00716.59
7.4.60.0090.00916.56
7.4.50.0000.00816.18
7.4.40.0030.01316.43
7.4.30.0060.01216.53
7.4.10.0130.00714.89
7.4.00.0040.01215.12
7.3.330.0000.00613.25
7.3.320.0000.00513.16
7.3.310.0030.00316.32
7.3.300.0000.00716.34
7.3.290.0000.01416.27
7.3.280.0070.00916.32
7.3.270.0170.00017.40
7.3.260.0100.00716.57
7.3.240.0110.00916.30
7.3.230.0110.01116.62
7.3.210.0120.00616.41
7.3.200.0090.01219.39
7.3.190.0070.01016.52
7.3.180.0100.00616.54
7.3.170.0120.00316.47
7.3.160.0070.01016.31
7.3.130.0090.00915.08
7.3.120.0130.00614.59
7.3.110.0030.01414.91
7.3.100.0030.01314.49
7.3.90.0040.01114.89
7.3.80.0060.00614.96
7.3.70.0030.00914.86
7.3.60.0070.01014.84
7.3.50.0100.00314.58
7.3.40.0090.00614.81
7.3.30.0080.00814.85
7.3.20.0110.00316.85
7.3.10.0050.00816.53
7.3.00.0030.01216.48
7.2.330.0100.00716.47
7.2.320.0130.01016.63
7.2.310.0140.00816.42
7.2.300.0000.01716.74
7.2.290.0060.01016.61
7.2.260.0000.01615.15
7.2.250.0030.01315.02
7.2.240.0080.00614.82
7.2.230.0070.01015.14
7.2.220.0030.01214.92
7.2.210.0040.00714.95
7.2.200.0100.00314.73
7.2.190.0100.00714.64
7.2.180.0000.01414.74
7.2.170.0040.00714.89
7.2.160.0060.00914.81
7.2.150.0090.00916.61
7.2.140.0060.00916.76
7.2.130.0110.01116.62
7.2.120.0110.00616.84
7.2.110.0130.00616.70
7.2.100.0150.00916.65
7.2.90.0100.00516.61
7.2.80.0070.00916.59
7.2.70.0160.01116.83
7.2.60.0030.01316.80
7.2.50.0030.01016.42
7.2.40.0120.00216.86
7.2.30.0090.00316.93
7.2.20.0080.01016.79
7.2.10.0060.00816.91
7.2.00.0070.00617.73
7.1.330.0000.01315.87
7.1.320.0140.00015.81
7.1.310.0000.01416.11
7.1.300.0070.00715.89
7.1.290.0000.00815.74
7.1.280.0030.01015.59
7.1.270.0030.01015.66
7.1.260.0040.01215.90
7.1.250.0100.00615.64
7.1.240.0030.00915.93
7.1.230.0070.00715.63
7.1.220.0030.00615.55
7.1.210.0070.00715.83
7.1.200.0040.00615.63
7.1.190.0070.00315.57
7.1.180.0030.00615.88
7.1.170.0130.00315.98
7.1.160.0090.00016.00
7.1.150.0040.01215.68
7.1.140.0080.01115.75
7.1.130.0110.00415.73
7.1.120.0060.00915.82
7.1.110.0000.01515.62
7.1.100.0050.00916.96
7.1.90.0070.01015.77
7.1.80.0080.00815.97
7.1.70.0040.00616.48
7.1.60.0090.01217.42
7.1.50.0170.01025.42
7.1.40.0160.00015.94
7.1.30.0040.00815.90
7.1.20.0070.00715.93
7.1.10.0140.00315.93
7.1.00.0030.04519.15
7.0.330.0160.00015.35
7.0.320.0000.01215.31
7.0.310.0060.00915.34
7.0.300.0040.00715.40
7.0.290.0000.01515.60
7.0.280.0030.01415.46
7.0.270.0060.00615.14
7.0.260.0000.01615.39
7.0.250.0060.00615.57
7.0.240.0090.00615.38
7.0.230.0060.01015.59
7.0.220.0030.01015.41
7.0.210.0030.00915.16
7.0.200.0090.01315.18
7.0.190.0100.00715.54
7.0.180.0070.01015.42
7.0.170.0060.01115.27
7.0.160.0080.00515.53
7.0.150.0080.00615.44
7.0.140.0050.03918.66
7.0.130.0080.00615.10
7.0.120.0030.00915.47
7.0.110.0090.00315.31
7.0.100.0040.00815.14
7.0.90.0070.00715.18
7.0.80.0090.00915.44
7.0.70.0080.00815.58
7.0.60.0020.04417.79
7.0.50.0070.02516.66
7.0.40.0100.03416.69
7.0.30.0180.02316.82
7.0.20.0180.02816.78
7.0.10.0150.04116.84
7.0.00.0110.03816.67
5.6.400.0090.00314.16
5.6.390.0030.01014.42
5.6.380.0070.01014.39
5.6.370.0100.00314.57
5.6.360.0000.00914.12
5.6.350.0060.00914.11
5.6.340.0110.00414.21
5.6.330.0060.00614.45
5.6.320.0040.00714.66
5.6.310.0080.00613.97
5.6.300.0060.01214.45
5.6.290.0040.01114.00
5.6.280.0030.04017.76
5.6.270.0080.00614.45
5.6.260.0030.01014.48
5.6.250.0000.00914.34
5.6.240.0030.01014.49
5.6.230.0030.00714.52
5.6.220.0070.01114.14
5.6.210.0100.04617.53
5.6.200.0080.04216.12
5.6.190.0080.04517.39
5.6.180.0170.02817.52
5.6.170.0130.02817.41
5.6.160.0140.03617.45
5.6.150.0020.04516.41
5.6.140.0110.03516.22
5.6.130.0080.03316.20
5.6.120.0080.04517.58
5.6.110.0050.04917.84
5.6.100.0060.02117.75
5.6.90.0110.03817.65
5.6.80.0070.02017.19
5.6.70.2370.01817.44
5.6.60.0080.00814.48
5.6.50.0060.00314.48
5.6.40.0000.01114.16
5.6.30.0060.00614.19
5.6.20.0090.00714.18
5.6.10.0070.00313.99
5.6.00.0060.01314.37
5.5.380.0000.01114.38
5.5.370.0090.00914.11
5.5.360.0090.00613.96
5.5.350.0110.04317.24
5.5.340.0120.02416.23
5.5.330.0050.04617.25
5.5.320.0230.02817.40
5.5.310.0100.02517.40
5.5.300.0040.03316.11
5.5.290.0040.04416.16
5.5.280.0050.03217.58
5.5.270.0060.02617.53
5.5.260.0030.02517.63
5.5.250.0030.03717.64
5.5.240.0100.02317.30
5.5.230.0030.00914.12
5.5.220.0090.00613.95
5.5.210.0070.00714.35
5.5.200.0000.01314.11
5.5.190.0100.00314.20
5.5.180.0040.00414.14
5.5.170.0030.00914.29
5.5.160.0040.01414.18
5.5.150.0000.01214.04
5.5.140.0030.01214.27
5.5.130.0040.01114.48
5.5.120.0060.00314.09
5.5.110.0090.00614.34
5.5.100.0100.00714.39
5.5.90.0080.00514.30
5.5.80.0090.00613.99
5.5.70.0000.01114.26
5.5.60.0030.00914.29
5.5.50.0150.00013.97
5.5.40.0030.01014.44
5.5.30.0040.00814.14
5.5.20.0110.00014.05
5.5.10.0030.01614.36
5.5.00.0070.01014.32
5.4.450.0490.02715.47
5.4.440.0180.03415.74
5.4.430.0480.03515.55
5.4.420.0330.00315.59
5.4.410.0320.00515.59
5.4.400.0310.00315.50
5.4.390.0300.00415.43
5.4.380.0330.00515.46
5.4.370.0320.00315.50
5.4.360.0310.00415.51
5.4.350.0380.00115.45
5.4.340.0020.02111.90
5.4.330.0060.00611.84
5.4.320.0070.02112.15
5.4.310.0030.02412.14
5.4.300.0070.01612.15
5.4.290.0020.02212.14
5.4.280.0020.02312.09
5.4.270.0060.01912.09
5.4.260.0030.02112.09
5.4.250.0060.02012.09
5.4.240.0070.01812.09
5.4.230.0080.01912.09
5.4.220.0060.02012.09
5.4.210.0020.02312.09
5.4.200.0020.02212.09
5.4.190.0050.02412.09
5.4.180.0040.02412.09
5.4.170.0050.02212.09
5.4.160.0040.02612.09
5.4.150.0050.02412.09
5.4.140.0070.01911.93
5.4.130.0040.01911.92
5.4.120.0040.01911.90
5.4.110.0060.02111.90
5.4.100.0060.01911.90
5.4.90.0050.02211.90
5.4.80.0030.02311.90
5.4.70.0040.02111.90
5.4.60.0020.02211.90
5.4.50.0050.02311.90
5.4.40.0050.02111.90
5.4.30.0040.02311.89
5.4.20.0060.02311.89
5.4.10.0070.02611.89
5.4.00.0080.02211.64
5.3.290.0130.03112.80
5.3.280.0040.03912.71
5.3.270.0080.03812.72
5.3.260.0050.03912.72
5.3.250.0050.04612.72
5.3.240.0060.04312.72
5.3.230.0050.04112.71
5.3.220.0090.03912.68
5.3.210.0040.04612.68
5.3.200.0090.03312.68
5.3.190.0030.04312.68
5.3.180.0060.03512.67
5.3.170.0040.03912.67
5.3.160.0050.03812.67
5.3.150.0040.03812.67
5.3.140.0070.04112.66
5.3.130.0070.03612.65
5.3.120.0040.04012.66
5.3.110.0070.04512.66
5.3.100.0070.03812.12
5.3.90.0040.03912.09
5.3.80.0070.03412.07
5.3.70.0050.03512.07
5.3.60.0050.03612.06
5.3.50.0020.03912.00
5.3.40.0060.03512.00
5.3.30.0080.03611.95
5.3.20.0070.03311.72
5.3.10.0050.03411.69
5.3.00.0050.04011.67
5.2.170.0040.0379.18
5.2.160.0020.0319.18
5.2.150.0040.0319.18
5.2.140.0040.0309.17
5.2.130.0070.0329.14
5.2.120.0060.0279.14
5.2.110.0040.0309.14
5.2.100.0040.0289.14
5.2.90.0050.0289.14
5.2.80.0060.0289.14
5.2.70.0060.0299.14
5.2.60.0030.0319.09
5.2.50.0060.0309.05
5.2.40.0050.0309.03
5.2.30.0040.0319.01
5.2.20.0040.0318.99
5.2.10.0020.0308.93
5.2.00.0040.0288.79
5.1.60.0030.0248.08
5.1.50.0030.0258.07
5.1.40.0050.0228.06
5.1.30.0050.0248.41
5.1.20.0060.0248.43
5.1.10.0030.0268.15
5.1.00.0030.0268.15
5.0.50.0040.0206.63
5.0.40.0050.0176.48
5.0.30.0050.0366.30
5.0.20.0050.0206.27
5.0.10.0020.0206.25
5.0.00.0040.0286.24
4.4.90.0040.0134.78
4.4.80.0010.0164.75
4.4.70.0040.0144.75
4.4.60.0020.0154.76
4.4.50.0010.0174.77
4.4.40.0040.0294.70
4.4.30.0020.0164.76
4.4.20.0040.0174.85
4.4.10.0010.0194.85
4.4.00.0020.0254.76
4.3.110.0030.0144.67
4.3.100.0030.0144.66
4.3.90.0010.0164.63
4.3.80.0020.0244.59
4.3.70.0010.0164.63
4.3.60.0040.0124.63
4.3.50.0050.0134.63
4.3.40.0040.0224.54
4.3.30.0020.0153.29
4.3.20.0010.0163.27
4.3.10.0040.0133.23
4.3.00.0170.0207.43

preferences:
49.65 ms | 400 KiB | 5 Q