3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = 'abcdef'; var_dump($string[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)
8.3.40.0110.00418.67
8.3.30.0110.00418.86
8.3.20.0000.00720.34
8.3.10.0030.00622.09
8.3.00.0000.00722.52
8.2.170.0140.00022.96
8.2.160.0070.00719.16
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0070.00026.16
8.2.120.0040.00417.50
8.2.110.0060.00322.27
8.2.100.0110.00419.64
8.2.90.0070.00019.22
8.2.80.0040.00417.97
8.2.70.0030.00617.50
8.2.60.0040.00417.93
8.2.50.0060.00318.07
8.2.40.0040.00418.34
8.2.30.0070.00318.03
8.2.20.0040.00417.53
8.2.10.0040.00419.43
8.2.00.0040.00417.59
8.1.270.0080.00023.99
8.1.260.0000.00826.35
8.1.250.0000.00828.09
8.1.240.0000.00823.92
8.1.230.0030.00818.94
8.1.220.0060.00317.74
8.1.210.0040.00418.77
8.1.200.0090.00317.23
8.1.190.0060.00317.50
8.1.180.0110.00018.10
8.1.170.0000.00918.52
8.1.160.0020.00521.98
8.1.150.0020.00518.57
8.1.140.0040.00417.36
8.1.130.0070.00017.85
8.1.120.0000.00817.29
8.1.110.0030.00517.39
8.1.100.0080.00017.43
8.1.90.0030.00717.36
8.1.80.0020.00517.30
8.1.70.0040.00417.30
8.1.60.0000.00817.51
8.1.50.0080.00017.41
8.1.40.0080.00017.32
8.1.30.0000.00717.50
8.1.20.0040.00417.54
8.1.10.0080.00017.52
8.1.00.0070.00017.39
8.0.300.0070.00018.77
8.0.290.0070.00017.04
8.0.280.0030.00318.37
8.0.270.0070.00017.24
8.0.260.0030.00316.77
8.0.250.0030.00316.77
8.0.240.0040.00416.84
8.0.230.0070.00016.81
8.0.220.0030.00316.89
8.0.210.0070.00016.83
8.0.200.0030.00316.71
8.0.190.0000.00716.85
8.0.180.0000.00716.83
8.0.170.0020.00516.83
8.0.160.0080.00016.82
8.0.150.0000.00716.77
8.0.140.0000.00716.80
8.0.130.0060.00013.18
8.0.120.0040.00416.80
8.0.110.0040.00416.67
8.0.100.0000.00716.61
8.0.90.0000.00716.71
8.0.80.0000.01716.75
8.0.70.0000.00816.81
8.0.60.0050.00216.84
8.0.50.0040.00416.70
8.0.30.0070.01317.14
8.0.20.0080.01017.40
8.0.10.0040.00417.04
8.0.00.0240.01016.72
7.4.330.0030.00315.00
7.4.320.0000.00616.45
7.4.300.0060.00016.58
7.4.290.0000.00616.48
7.4.280.0000.00716.48
7.4.270.0000.00716.59
7.4.260.0070.00016.52
7.4.250.0040.00416.50
7.4.240.0060.00216.48
7.4.230.0030.00316.55
7.4.220.0100.01616.46
7.4.210.0070.00716.57
7.4.200.0040.00416.61
7.4.190.0000.00716.38
7.4.160.0060.00916.22
7.4.150.0130.00417.40
7.4.140.0070.01117.86
7.4.130.0140.00316.39
7.4.120.0050.01316.50
7.4.110.0130.00316.45
7.4.100.0090.00916.31
7.4.90.0140.00316.38
7.4.80.0180.00019.39
7.4.70.0070.01016.50
7.4.60.0060.01216.33
7.4.50.0000.00816.43
7.4.40.0030.01222.77
7.4.30.0090.00616.59
7.4.10.0060.01214.70
7.4.00.0050.01014.98
7.3.330.0020.00213.03
7.3.320.0030.00313.10
7.3.310.0070.00016.27
7.3.300.0070.00016.05
7.3.290.0060.00916.16
7.3.280.0070.01116.18
7.3.270.0100.00717.40
7.3.260.0140.00416.43
7.3.250.0090.00916.25
7.3.240.0080.01116.27
7.3.230.0040.01616.39
7.3.210.0070.01016.14
7.3.200.0090.00619.39
7.3.190.0130.01016.52
7.3.180.0100.00716.33
7.3.170.0080.00816.27
7.3.160.0030.01316.21
7.3.130.0000.01314.80
7.3.120.0100.00714.75
7.3.110.0130.00014.74
7.3.100.0160.00014.50
7.3.90.0030.01014.64
7.3.80.0000.00914.50
7.3.70.0060.00614.79
7.3.60.0100.00314.70
7.3.50.0060.00614.88
7.3.40.0040.00714.65
7.3.30.0100.00714.86
7.3.20.0000.01716.63
7.3.10.0000.01316.42
7.3.00.0110.00416.82
7.2.330.0140.00316.28
7.2.320.0170.00316.41
7.2.310.0100.00716.61
7.2.300.0180.00616.52
7.2.290.0140.00316.58
7.2.260.0140.00314.75
7.2.250.0000.01714.63
7.2.240.0110.00414.75
7.2.230.0000.01314.82
7.2.220.0000.01114.72
7.2.210.0080.00314.86
7.2.200.0040.00814.84
7.2.190.0090.00314.97
7.2.180.0070.00714.91
7.2.170.0090.00014.72
7.2.160.0030.01214.89
7.2.150.0000.01416.73
7.2.140.0080.00416.51
7.2.130.0040.01116.85
7.2.120.0030.01016.80
7.2.110.0080.00416.81
7.2.100.0100.00616.91
7.2.90.0100.00716.45
7.2.80.0060.01016.96
7.2.70.0080.00417.02
7.2.60.0050.00916.81
7.2.50.0080.00616.77
7.2.40.0090.00616.74
7.2.30.0000.01016.92
7.2.20.0040.00716.86
7.2.10.0060.01017.02
7.2.00.0040.00817.97
7.1.330.0030.01215.84
7.1.320.0080.00815.54
7.1.310.0070.00315.68
7.1.300.0040.00815.60
7.1.290.0060.00615.46
7.1.280.0000.01615.52
7.1.270.0030.01415.59
7.1.260.0070.00415.93
7.1.250.0070.00715.74
7.1.240.0070.01015.80
7.1.230.0000.00915.75
7.1.220.0050.00515.64
7.1.210.0070.00315.80
7.1.200.0070.00615.67
7.1.190.0070.00415.69
7.1.180.0110.00315.67
7.1.170.0080.00415.65
7.1.160.0060.00915.70
7.1.150.0040.00715.60
7.1.140.0080.00315.64
7.1.130.0030.00715.59
7.1.120.0040.01115.55
7.1.110.0090.00615.75
7.1.100.0040.00917.05
7.1.90.0060.01015.84
7.1.80.0070.00315.85
7.1.70.0010.00716.37
7.1.60.0050.01517.75
7.1.50.0050.01016.19
7.1.40.0040.00515.75
7.1.30.0140.00015.55
7.1.20.0060.00615.80
7.1.10.0000.01215.90
7.1.00.0070.04119.07
7.0.330.0040.00415.25
7.0.320.0040.00415.34
7.0.310.0130.00315.39
7.0.300.0080.00615.41
7.0.290.0080.00815.48
7.0.280.0060.00615.47
7.0.270.0090.00015.29
7.0.260.0000.01715.29
7.0.250.0030.00915.38
7.0.240.0030.00915.14
7.0.230.0000.01415.29
7.0.220.0100.00315.16
7.0.210.0070.00315.32
7.0.200.0090.00716.00
7.0.190.0000.00815.31
7.0.180.0080.00015.25
7.0.170.0090.00315.47
7.0.160.0000.01515.34
7.0.150.0040.00415.33
7.0.140.0050.04218.67
7.0.130.0000.01215.32
7.0.120.0030.00915.21
7.0.110.0100.00315.20
7.0.100.0120.00015.40
7.0.90.0090.00615.32
7.0.80.0070.00715.46
7.0.70.0030.00915.47
7.0.60.0110.03817.55
7.0.50.0020.04516.68
7.0.40.0030.02516.95
7.0.30.0170.02716.65
7.0.20.0200.04216.81
7.0.10.0050.05016.79
7.0.00.0110.02416.79
5.6.400.0000.01414.44
5.6.390.0050.00514.23
5.6.380.0040.00414.38
5.6.370.0120.00614.46
5.6.360.0090.00614.57
5.6.350.0000.01114.53
5.6.340.0000.01514.11
5.6.330.0070.00714.33
5.6.320.0140.00014.04
5.6.310.0090.00614.41
5.6.300.0040.00914.30
5.6.290.0040.01114.12
5.6.280.0030.04317.61
5.6.270.0100.00714.25
5.6.260.0060.00314.39
5.6.250.0030.01314.07
5.6.240.0070.00714.17
5.6.230.0030.00914.14
5.6.220.0040.00414.33
5.6.210.0050.03517.38
5.6.200.0070.04216.14
5.6.190.0050.03017.53
5.6.180.0230.03817.35
5.6.170.0170.02917.39
5.6.160.0100.02017.34
5.6.150.0080.03316.18
5.6.140.0030.04216.23
5.6.130.0080.03816.24
5.6.120.0050.03717.59
5.6.110.0100.03817.58
5.6.100.0080.03217.55
5.6.90.0110.03517.59
5.6.80.0070.04317.32
5.6.70.0070.01014.06
5.6.60.0090.00314.30
5.6.50.0050.00514.27
5.6.40.0070.00314.03
5.6.30.0090.00614.19
5.6.20.0030.00614.26
5.6.10.0090.00313.96
5.6.00.0000.01414.44
5.5.380.0070.00714.07
5.5.370.0030.01014.16
5.5.360.0030.00613.95
5.5.350.0080.02717.31
5.5.340.0160.02116.07
5.5.330.0070.04417.20
5.5.320.0260.03717.08
5.5.310.0170.04017.25
5.5.300.0110.02516.17
5.5.290.0100.01815.99
5.5.280.0080.04717.48
5.5.270.0070.04717.41
5.5.260.0050.02317.29
5.5.250.0120.04017.21
5.5.240.0020.04417.12
5.5.230.0040.01114.14
5.5.220.0090.00413.91
5.5.210.0030.01014.11
5.5.200.0070.00313.71
5.5.190.0120.00314.18
5.5.180.0060.00613.75
5.5.170.0060.00313.93
5.5.160.0070.00713.96
5.5.150.0040.00813.93
5.5.140.0040.01114.26
5.5.130.0060.01114.03
5.5.120.0090.00014.07
5.5.110.0040.00813.89
5.5.100.0100.00314.14
5.5.90.0070.00714.22
5.5.80.0030.00914.03
5.5.70.0030.00914.04
5.5.60.0030.01014.02
5.5.50.0070.00313.93
5.5.40.0070.00713.95
5.5.30.0070.01014.18
5.5.20.0070.00314.44
5.5.10.0040.01114.11
5.5.00.0030.01314.17
5.4.450.0400.03215.79
5.4.440.0460.02915.79
5.4.430.0070.03215.75
5.4.420.0050.03415.71
5.4.410.0080.02815.39
5.4.400.0090.02515.40
5.4.390.0050.03415.35
5.4.380.0080.03315.28
5.4.370.0130.02915.23
5.4.360.0130.02815.23
5.4.350.0100.03015.32
5.4.340.0080.03215.25
5.4.330.0040.00411.97
5.4.320.0030.02212.21
5.4.310.0050.02112.21
5.4.300.0050.02412.21
5.4.290.0050.02612.21
5.4.280.0060.02012.14
5.4.270.0060.02112.14
5.4.260.0070.02312.14
5.4.250.0040.03112.15
5.4.240.0070.02412.15
5.4.230.0050.02312.14
5.4.220.0090.01912.14
5.4.210.0030.02412.14
5.4.200.0090.02512.14
5.4.190.0070.02812.14
5.4.180.0090.01812.14
5.4.170.0040.02012.14
5.4.160.0030.02412.14
5.4.150.0040.02312.14
5.4.140.0030.02211.98
5.4.130.0060.01811.98
5.4.120.0030.02111.96
5.4.110.0050.01911.95
5.4.100.0040.02111.95
5.4.90.0020.02411.95
5.4.80.0070.02011.95
5.4.70.0070.01911.96
5.4.60.0050.02111.96
5.4.50.0050.01911.95
5.4.40.0070.01811.95
5.4.30.0050.01911.95
5.4.20.0050.02011.95
5.4.10.0040.02211.94
5.4.00.0080.01711.69
5.3.290.0090.02512.39
5.3.280.0080.02012.34
5.3.270.0060.01912.35
5.3.260.0050.02412.35
5.3.250.0070.01812.35
5.3.240.0070.02012.35
5.3.230.0050.02812.34
5.3.220.0060.02212.33
5.3.210.0020.02312.33
5.3.200.0040.02212.33
5.3.190.0070.02012.32
5.3.180.0050.02212.32
5.3.170.0060.01812.32
5.3.160.0020.02512.32
5.3.150.0050.02112.32
5.3.140.0050.02012.31
5.3.130.0050.02112.31
5.3.120.0040.02412.31
5.3.110.0060.02312.31
5.3.100.0040.02112.04
5.3.90.0030.02112.03
5.3.80.0040.02112.02
5.3.70.0040.02112.02
5.3.60.0030.02212.02
5.3.50.0050.02011.99
5.3.40.0050.02211.98
5.3.30.0080.01811.96
5.3.20.0060.01811.84
5.3.10.0020.02311.82
5.3.00.0050.02211.81
5.2.170.0050.0319.14
5.2.160.0040.0299.14
5.2.150.0020.0339.15
5.2.140.0060.0309.14
5.2.130.0080.0309.11
5.2.120.0050.0289.10
5.2.110.0070.0279.11
5.2.100.0080.0259.11
5.2.90.0060.0289.11
5.2.80.0040.0309.11
5.2.70.0030.0339.10
5.2.60.0050.0329.05
5.2.50.0060.0289.03
5.2.40.0050.0289.00
5.2.30.0040.0308.98
5.2.20.0040.0298.96
5.2.10.0050.0288.90
5.2.00.0070.0268.76
5.1.60.0070.0218.04
5.1.50.0040.0258.04
5.1.40.0020.0318.03
5.1.30.0080.0228.37
5.1.20.0050.0358.40
5.1.10.0040.0268.12
5.1.00.0030.0268.12
5.0.50.0050.0206.60
5.0.40.0040.0196.46
5.0.30.0020.0326.27
5.0.20.0020.0216.25
5.0.10.0040.0196.22
5.0.00.0030.0316.21
4.4.90.0030.0164.78
4.4.80.0020.0174.75
4.4.70.0030.0164.75
4.4.60.0010.0174.75
4.4.50.0040.0144.77
4.4.40.0020.0254.71
4.4.30.0020.0164.76
4.4.20.0030.0154.84
4.4.10.0030.0174.85
4.4.00.0020.0274.76
4.3.110.0040.0154.67
4.3.100.0040.0144.66
4.3.90.0030.0144.63
4.3.80.0080.0234.59
4.3.70.0010.0164.63
4.3.60.0040.0134.63
4.3.50.0030.0164.63
4.3.40.0010.0264.53
4.3.30.0050.0133.27
4.3.20.0040.0143.25
4.3.10.0010.0173.21
4.3.00.0100.0237.10

preferences:
42.48 ms | 400 KiB | 5 Q