3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = String("a" + "string"); echo '$a = ' . $a;

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)
8.3.40.0140.00318.79
8.3.30.0100.00719.01
8.3.20.0040.01120.09
8.3.10.0110.00721.76
8.3.00.0080.00017.79
8.2.170.0110.01122.96
8.2.160.0100.00320.44
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00718.82
8.2.110.0060.00322.07
8.2.100.0110.00017.84
8.2.90.0040.00419.23
8.2.80.0080.00017.97
8.2.70.0040.00417.50
8.2.60.0040.00417.65
8.2.50.0050.00318.07
8.2.40.0040.00419.88
8.2.30.0000.00817.91
8.2.20.0000.00817.59
8.2.10.0040.00417.88
8.2.00.0030.00617.63
8.1.270.0080.00023.79
8.1.260.0060.00326.35
8.1.250.0070.00028.09
8.1.240.0100.00023.84
8.1.230.0070.00419.08
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0030.00817.10
8.1.190.0050.00317.23
8.1.180.0040.00418.10
8.1.170.0050.00318.48
8.1.160.0000.00721.99
8.1.150.0070.00018.73
8.1.140.0060.00317.26
8.1.130.0070.00017.75
8.1.120.0040.00417.37
8.1.110.0040.00417.24
8.1.100.0000.00717.35
8.1.90.0070.00017.22
8.1.80.0070.00017.30
8.1.70.0000.00817.19
8.1.60.0030.00617.47
8.1.50.0080.00017.42
8.1.40.0040.00417.29
8.1.30.0040.00417.59
8.1.20.0000.00717.50
8.1.10.0000.00717.41
8.1.00.0030.00517.33
8.0.300.0070.00018.77
8.0.290.0070.00016.75
8.0.280.0050.00218.30
8.0.270.0030.00317.19
8.0.260.0040.00417.20
8.0.250.0030.00316.87
8.0.240.0040.00416.91
8.0.230.0000.00616.94
8.0.220.0030.00316.89
8.0.210.0050.00216.76
8.0.200.0060.00016.86
8.0.190.0060.00316.86
8.0.180.0040.00416.98
8.0.170.0040.00416.90
8.0.160.0040.00416.98
8.0.150.0070.00016.88
8.0.140.0040.00316.88
8.0.130.0000.00513.38
8.0.120.0050.00316.86
8.0.110.0040.00416.89
8.0.100.0040.00416.75
8.0.90.0000.00716.96
8.0.80.0070.00716.81
8.0.70.0040.00416.79
8.0.60.0070.00016.93
8.0.50.0000.00816.71
8.0.30.0120.00716.94
8.0.20.0110.00817.40
8.0.10.0050.00216.77
8.0.00.0110.00716.75
7.4.330.0030.00315.00
7.4.320.0060.00016.38
7.4.300.0070.00016.49
7.4.290.0030.00616.54
7.4.280.0050.00616.45
7.4.270.0030.00316.44
7.4.260.0060.00316.43
7.4.250.0000.00716.51
7.4.240.0020.00516.56
7.4.230.0030.00616.38
7.4.220.0130.01316.50
7.4.210.0120.00916.54
7.4.200.0030.00316.43
7.4.160.0100.01016.26
7.4.150.0100.00617.40
7.4.140.0080.00917.86
7.4.130.0110.00516.55
7.4.120.0090.00816.62
7.4.110.0100.00716.57
7.4.100.0110.00716.41
7.4.90.0120.01016.38
7.4.80.0000.01719.39
7.4.70.0070.01016.41
7.4.60.0060.01016.38
7.4.50.0060.00016.58
7.4.40.0130.01016.46
7.4.30.0040.01116.34
7.4.00.0090.00914.60
7.3.330.0000.00713.10
7.3.320.0000.00513.20
7.3.310.0040.00416.34
7.3.300.0000.00716.25
7.3.290.0100.00316.32
7.3.280.0070.01116.29
7.3.270.0070.01117.40
7.3.260.0140.00316.48
7.3.250.0070.01316.25
7.3.240.0100.00716.44
7.3.230.0100.00716.44
7.3.210.0070.01116.50
7.3.200.0100.00719.39
7.3.190.0080.01216.24
7.3.180.0080.00816.20
7.3.170.0040.01516.50
7.3.160.0040.01316.52
7.3.120.0100.00614.84
7.3.110.0030.01314.87
7.3.100.0080.00814.83
7.3.90.0030.00614.48
7.3.80.0040.01115.01
7.3.70.0000.01414.57
7.3.60.0060.00914.62
7.3.50.0040.01114.68
7.3.40.0060.00314.82
7.3.30.0060.00914.31
7.3.20.0090.00616.62
7.3.10.0000.00916.52
7.3.00.0050.00916.66
7.2.330.0110.00616.34
7.2.320.0110.00616.45
7.2.310.0100.00716.46
7.2.300.0060.01016.25
7.2.290.0090.00616.65
7.2.250.0070.01114.82
7.2.240.0130.00714.81
7.2.230.0040.01215.04
7.2.220.0030.01015.18
7.2.210.0060.01214.70
7.2.200.0000.01414.65
7.2.190.0100.00714.83
7.2.180.0070.00715.06
7.2.170.0090.00614.60
7.2.130.0150.00016.98
7.2.120.0060.00916.77
7.2.110.0000.01216.68
7.2.100.0030.01016.80
7.2.90.0110.00316.82
7.2.80.0040.01116.88
7.2.70.0080.00616.68
7.2.60.0110.00516.79
7.2.50.0030.01016.59
7.2.40.0060.00316.79
7.2.30.0000.01216.68
7.2.20.0030.00616.83
7.2.10.0030.01316.86
7.2.00.0110.00316.80
7.1.330.0070.00715.64
7.1.320.0060.00915.88
7.1.310.0110.00415.59
7.1.300.0030.01315.56
7.1.290.0060.00815.42
7.1.280.0070.00715.49
7.1.270.0040.01115.67
7.1.260.0000.01015.75
7.1.250.0070.00715.61
7.1.240.0070.00415.64
7.1.230.0060.00915.60
7.1.220.0040.00715.73
7.1.210.0100.00315.65
7.1.200.0040.00515.62
7.1.190.0040.00715.66
7.1.180.0030.00615.71
7.1.170.0030.00615.68
7.1.160.0040.00715.63
7.1.150.0040.01415.58
7.1.140.0040.01215.59
7.1.130.0000.00915.75
7.1.120.0080.00415.53
7.1.110.0060.00915.54
7.1.100.0080.00516.63
7.1.90.0040.00715.44
7.1.80.0060.00615.71
7.1.70.0080.00316.38
7.1.60.0050.01217.39
7.1.50.0130.00416.26
7.1.40.0040.00815.74
7.1.30.0090.00315.62
7.1.20.0060.01015.64
7.1.10.0090.00315.48
7.1.00.0050.04319.00
7.0.330.0070.00415.16
7.0.320.0040.01115.13
7.0.310.0060.00615.38
7.0.300.0030.00915.47
7.0.290.0030.00715.13
7.0.280.0070.00715.41
7.0.270.0070.01015.39
7.0.260.0000.00915.02
7.0.250.0100.00315.29
7.0.240.0070.01015.35
7.0.230.0030.00915.39
7.0.220.0030.01015.41
7.0.210.0060.00615.14
7.0.200.0070.00516.05
7.0.190.0000.00815.41
7.0.180.0030.01115.36
7.0.170.0110.00415.50
7.0.160.0090.00615.21
7.0.150.0070.00715.34
7.0.140.0030.03818.68
7.0.130.0060.01015.18
7.0.120.0030.01015.25
7.0.110.0040.00715.19
7.0.100.0030.00915.43
7.0.90.0070.00415.13
7.0.80.0070.00715.45
7.0.70.0060.00615.23
7.0.60.0070.03517.72
7.0.50.0110.04116.45
7.0.40.0070.04816.77
7.0.30.0220.04216.78
7.0.20.0050.03116.73
7.0.10.0030.04816.62
7.0.00.0100.02416.78
5.6.380.0070.00714.28
5.6.370.0030.01014.09
5.6.360.0100.00314.25
5.6.350.0060.00614.37
5.6.340.0080.00814.11
5.6.330.0070.00714.19
5.6.320.0060.00614.11
5.6.310.0030.01314.05
5.6.300.0030.01014.26
5.6.290.0060.00614.17
5.6.280.0030.04217.58
5.6.270.0100.00313.91
5.6.260.0060.00914.09
5.6.250.0100.00314.36
5.6.240.0030.00614.12
5.6.230.0040.00813.86
5.6.220.0060.00614.25
5.6.210.0050.04317.47
5.6.200.0020.02716.19
5.6.190.0030.03117.15
5.6.180.0200.02017.15
5.6.170.0100.03017.31
5.6.160.0050.03217.39
5.6.150.0050.02116.08
5.6.140.0060.04216.18
5.6.130.0030.02216.08
5.6.120.0070.04517.46
5.6.110.0050.04617.43
5.6.100.0030.02517.46
5.6.90.0100.03917.51
5.6.80.0100.02917.25
5.6.70.0070.00713.72
5.6.60.0030.01014.02
5.6.50.0030.01014.26
5.6.40.0070.00713.99
5.6.30.0050.00514.07
5.6.20.0120.00013.95
5.6.10.0030.00513.86
5.6.00.0090.00314.07
5.5.380.0000.01011.18
5.5.370.0030.00611.18
5.5.360.0050.00311.18
5.5.350.0030.02015.79
5.5.340.0060.03014.56
5.5.330.0070.02915.71
5.5.320.0220.04015.76
5.5.310.0170.03415.68
5.5.300.0080.02814.54
5.5.290.0050.04514.59
5.5.280.0030.03815.95
5.5.270.0080.03815.96
5.5.260.0090.02516.02
5.5.250.0030.02415.82
5.5.240.2000.02415.73
5.5.230.0030.00311.18
5.5.220.0080.00411.18
5.5.210.0040.00411.18
5.5.200.0100.00011.18
5.5.190.0040.00411.18
5.5.180.0060.00311.18
5.5.170.0000.01311.18
5.5.160.0000.00911.18
5.5.150.0060.00011.18
5.5.140.0070.00411.18
5.5.130.0090.00311.18
5.5.120.0030.00311.18
5.5.110.0060.00611.18
5.5.100.0060.00611.18
5.5.90.0030.00911.18
5.5.80.0040.00711.18
5.5.70.0100.00011.18
5.5.60.0060.00011.18
5.5.50.0000.01111.18
5.5.40.0060.00611.18
5.5.30.0040.00411.18
5.5.20.0000.00611.18
5.5.10.0070.00311.18
5.5.00.0070.00011.18
5.4.450.0200.01815.36
5.4.440.0070.02315.31
5.4.430.0250.02715.33
5.4.420.0090.02315.29
5.4.410.0050.02915.07
5.4.400.0190.02015.21
5.4.390.0390.02015.13
5.4.380.0090.02814.93
5.4.370.0150.02214.89
5.4.360.0070.03214.89
5.4.350.0150.02914.90
5.4.340.0100.03014.83
5.4.330.0030.00911.18
5.4.320.0070.02311.81
5.4.310.0040.02111.81
5.4.300.0060.02011.81
5.4.290.0050.02311.81
5.4.280.0050.02111.76
5.4.270.0070.01911.76
5.4.260.0060.02111.76
5.4.250.0050.02311.76
5.4.240.0040.02011.76
5.4.230.0060.02511.76
5.4.220.0040.02211.76
5.4.210.0020.02711.76
5.4.200.0090.01811.76
5.4.190.0050.02111.75
5.4.180.0050.02211.75
5.4.170.0060.01911.76
5.4.160.0050.01911.76
5.4.150.0080.02111.76
5.4.140.0070.02011.60
5.4.130.0060.01911.59
5.4.120.0060.02011.57
5.4.110.0050.01911.57
5.4.100.0050.02411.57
5.4.90.0060.02311.57
5.4.80.0050.01911.57
5.4.70.0070.01611.57
5.4.60.0040.02011.57
5.4.50.0020.02111.57
5.4.40.0060.01911.56
5.4.30.0050.02011.56
5.4.20.0040.02211.56
5.4.10.0020.02411.56
5.4.00.0050.02211.31
5.3.290.0080.01811.99
5.3.280.0060.02111.94
5.3.270.0060.02211.95
5.3.260.0060.02311.95
5.3.250.0050.02511.95
5.3.240.0050.02111.95
5.3.230.0080.02011.94
5.3.220.0070.02511.93
5.3.210.0020.02411.93
5.3.200.0070.02011.93
5.3.190.0020.02411.93
5.3.180.0040.02511.93
5.3.170.0060.02111.92
5.3.160.0050.02711.92
5.3.150.0070.02711.92
5.3.140.0080.02711.92
5.3.130.0040.02111.92
5.3.120.0050.02311.92
5.3.110.0040.02311.92
5.3.100.0070.02011.65
5.3.90.0060.01811.63
5.3.80.0050.02111.63
5.3.70.0020.02411.63
5.3.60.0040.02511.62
5.3.50.0030.02311.59
5.3.40.0040.02011.59
5.3.30.0020.02211.56
5.3.20.0020.02411.45
5.3.10.0060.01911.44
5.3.00.0050.02111.43
5.2.170.0040.01810.18
5.2.160.0010.01910.18
5.2.150.0050.01810.18
5.2.140.0060.01510.18
5.2.130.0050.01610.16
5.2.120.0040.01610.16
5.2.110.0040.01810.16
5.2.100.0070.02110.16
5.2.90.0070.02010.16
5.2.80.0050.01610.15
5.2.70.0050.02010.15
5.2.60.0040.01710.13
5.2.50.0020.01910.12
5.2.40.0030.01610.10
5.2.30.0020.02010.09
5.2.20.0040.01610.09
5.2.10.0050.01610.05
5.2.00.0040.0179.97
5.1.60.0020.0149.62
5.1.50.0050.0139.62
5.1.40.0020.0179.61
5.1.30.0040.0149.79
5.1.20.0040.0149.79
5.1.10.0020.0169.66
5.1.00.0040.0159.66
5.0.50.0040.0108.89
5.0.40.0030.0118.82
5.0.30.0020.0188.73
5.0.20.0020.0108.72
5.0.10.0060.0108.71
5.0.00.0050.0158.70
4.4.90.0020.0097.98
4.4.80.0020.0117.96
4.4.70.0030.0077.97
4.4.60.0020.0107.97
4.4.50.0020.0097.97
4.4.40.0030.0137.94
4.4.30.0010.0117.97
4.4.20.0020.0098.01
4.4.10.0010.0118.01
4.4.00.0040.0157.96
4.3.110.0020.0107.92
4.3.100.0020.0097.92
4.3.90.0010.0107.91
4.3.80.0020.0157.88
4.3.70.0040.0097.90
4.3.60.0040.0077.90
4.3.50.0040.0097.90
4.3.40.0030.0147.86
4.3.30.0000.0127.23
4.3.20.0020.0147.21
4.3.10.0010.0127.20
4.3.00.0120.01013.22

preferences:
31.68 ms | 400 KiB | 5 Q