3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['a', 'b', 'c']; $b = $a . 'dd';

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)
8.3.60.0070.00716.50
8.3.50.0070.00716.31
8.3.40.0120.00318.72
8.3.30.0100.00318.63
8.3.20.0040.00420.13
8.3.10.0080.00023.39
8.3.00.0040.00419.56
8.2.180.0140.00018.16
8.2.170.0060.00822.96
8.2.160.0120.00819.04
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0070.00019.30
8.2.120.0070.00026.35
8.2.110.0060.00320.47
8.2.100.0100.00017.91
8.2.90.0030.00617.75
8.2.80.0050.00318.67
8.2.70.0050.00317.93
8.2.60.0090.00018.09
8.2.50.0050.00319.41
8.2.40.0000.00821.20
8.2.30.0040.00419.32
8.2.20.0000.00718.04
8.2.10.0040.00417.97
8.2.00.0070.00018.10
8.1.280.0040.01125.92
8.1.270.0080.00021.91
8.1.260.0000.00726.35
8.1.250.0070.00028.09
8.1.240.0030.00622.20
8.1.230.0100.00317.83
8.1.220.0060.00317.79
8.1.210.0040.00418.77
8.1.200.0000.00917.35
8.1.190.0000.00817.35
8.1.180.0080.00018.10
8.1.170.0000.00818.59
8.1.160.0000.00718.95
8.1.150.0060.00320.66
8.1.140.0000.00919.50
8.1.130.0030.00318.75
8.1.120.0000.00717.39
8.1.110.0040.00417.34
8.1.100.0000.00717.34
8.1.90.0030.00617.38
8.1.80.0030.00417.27
8.1.70.0030.00317.36
8.1.60.0050.00317.43
8.1.50.0030.00617.46
8.1.40.0130.00317.45
8.1.30.0000.00717.59
8.1.20.0000.00817.60
8.1.10.0080.00017.51
8.1.00.0000.00717.39
8.0.300.0040.00418.77
8.0.290.0080.00016.75
8.0.280.0000.00718.31
8.0.270.0030.00317.24
8.0.260.0060.00016.87
8.0.250.0030.00517.02
8.0.240.0000.00817.00
8.0.230.0030.00317.00
8.0.220.0070.00016.83
8.0.210.0000.00816.96
8.0.200.0000.00617.00
8.0.190.0050.00316.91
8.0.180.0000.00716.97
8.0.170.0070.00016.94
8.0.160.0000.00816.84
8.0.150.0000.00716.77
8.0.140.0000.00716.87
8.0.130.0030.00313.34
8.0.120.0000.00716.93
8.0.110.0070.00016.84
8.0.100.0050.00316.89
8.0.90.0070.00016.81
8.0.80.0060.01816.96
8.0.70.0030.00516.82
8.0.60.0000.00716.80
8.0.50.0040.00416.78
8.0.30.0100.01017.06
8.0.20.0140.00817.40
8.0.10.0050.00316.87
8.0.00.0170.00016.57
7.4.330.0000.00615.55
7.4.320.0000.00616.43
7.4.300.0030.00316.53
7.4.290.0030.00316.51
7.4.280.0040.00416.43
7.4.270.0070.00016.50
7.4.260.0040.00416.41
7.4.250.0040.00416.46
7.4.240.0000.00716.54
7.4.230.0050.00216.47
7.4.220.0070.01116.43
7.4.210.0040.01116.48
7.4.200.0070.00016.50
7.4.160.0140.00216.47
7.4.150.0040.01417.40
7.4.140.0080.01217.86
7.4.130.0090.01016.66
7.4.120.0140.00716.47
7.4.110.0180.00016.60
7.4.100.0150.00616.48
7.4.90.0090.00916.33
7.4.80.0090.00819.39
7.4.70.0030.01516.35
7.4.60.0070.01016.67
7.4.50.0070.00716.62
7.4.40.0090.00916.48
7.4.30.0040.01216.55
7.4.10.0070.01114.98
7.4.00.0060.00714.79
7.3.330.0000.00613.10
7.3.320.0050.00013.00
7.3.310.0030.00316.02
7.3.300.0030.00316.22
7.3.290.0070.01016.26
7.3.280.0090.00816.27
7.3.270.0120.01317.40
7.3.260.0100.01016.42
7.3.250.0120.00516.41
7.3.240.0090.00916.32
7.3.230.0090.01516.40
7.3.210.0090.01316.46
7.3.200.0050.01116.28
7.3.190.0060.01316.27
7.3.180.0070.01016.47
7.3.170.0100.00616.24
7.3.160.0060.01116.09
7.3.130.0070.01014.74
7.3.120.0040.01214.73
7.3.110.0040.01414.50
7.3.100.0030.01014.62
7.3.90.0000.01614.49
7.3.80.0060.00814.78
7.3.70.0070.00314.75
7.3.60.0030.00814.58
7.3.50.0000.01114.73
7.3.40.0090.00614.86
7.3.30.0030.01014.71
7.3.20.0070.00716.61
7.3.10.0070.00316.77
7.3.00.0090.00916.50
7.2.330.0120.00616.28
7.2.320.0070.01016.59
7.2.310.0030.01216.55
7.2.300.0090.01516.44
7.2.290.0080.01416.55
7.2.260.0060.01214.82
7.2.250.0110.00614.82
7.2.240.0120.00614.60
7.2.230.0060.00915.14
7.2.220.0030.01014.95
7.2.210.0060.00615.14
7.2.200.0000.01614.95
7.2.190.0040.00714.89
7.2.180.0000.01115.10
7.2.170.0060.00914.97
7.2.160.0060.00615.09
7.2.150.0090.00616.65
7.2.140.0070.00416.67
7.2.130.0120.00316.85
7.2.120.0030.01016.74
7.2.110.0110.00316.79
7.2.100.0070.00716.70
7.2.90.0120.00316.82
7.2.80.0100.00316.66
7.2.70.0070.01016.86
7.2.60.0060.00916.73
7.2.50.0030.00916.74
7.2.40.0000.01416.81
7.2.30.0080.00816.86
7.2.20.0030.00916.87
7.2.10.0030.00716.52
7.2.00.0030.01418.11
7.1.330.0030.00915.31
7.1.320.0080.00815.36
7.1.310.0040.00915.76
7.1.300.0060.00615.41
7.1.290.0030.00715.66
7.1.280.0060.00315.66
7.1.270.0040.01115.75
7.1.260.0120.00615.36
7.1.250.0100.00315.39
7.1.240.0000.01315.62
7.1.230.0090.00615.61
7.1.220.0090.00615.77
7.1.210.0070.00715.64
7.1.200.0070.00815.61
7.1.190.0030.01215.51
7.1.180.0040.01115.62
7.1.170.0040.00715.78
7.1.160.0040.00715.61
7.1.150.0060.00915.81
7.1.140.0120.00315.63
7.1.130.0090.00315.73
7.1.120.0000.00915.51
7.1.110.0060.00615.73
7.1.100.0030.00616.38
7.1.90.0050.00515.61
7.1.80.0030.01015.52
7.1.70.0060.00916.29
7.1.60.0160.01125.35
7.1.50.0120.01325.06
7.1.40.0120.01124.87
7.1.30.0130.01324.83
7.1.20.0060.01524.97
7.1.10.0070.00715.88
7.1.00.0080.00616.03
7.0.330.0000.01014.95
7.0.320.0000.00815.53
7.0.310.0080.00415.23
7.0.300.0030.01015.06
7.0.290.0120.00315.21
7.0.280.0070.00715.20
7.0.270.0000.01015.21
7.0.260.0120.00315.24
7.0.250.0030.01215.30
7.0.240.0000.01315.46
7.0.230.0040.00415.23
7.0.220.0070.00315.38
7.0.210.0090.00615.45
7.0.200.0110.00416.04
7.0.190.0060.00616.00
7.0.180.0050.01015.83
7.0.170.0060.00915.71
7.0.160.0070.00815.63
7.0.150.0060.00715.76
7.0.140.0080.00615.76
7.0.130.0070.00915.82
7.0.120.0050.01015.88
7.0.110.0050.00815.77
7.0.100.0050.01015.97
7.0.90.0060.00815.83
7.0.80.0040.01015.65
7.0.70.0040.01115.82
7.0.60.0050.00815.63
7.0.50.0030.01315.83
7.0.40.0040.01114.88
7.0.30.0080.00614.88
7.0.20.0100.00514.76
7.0.10.0050.01014.81
7.0.00.0050.00914.93
5.6.400.0040.00914.32
5.6.390.0000.01114.11
5.6.380.0030.00914.60
5.6.370.0030.00914.47
5.6.360.0120.00314.47
5.6.350.0110.00314.54
5.6.340.0030.01014.20
5.6.330.0060.00314.36
5.6.320.0000.01514.39
5.6.310.0060.00314.04
5.6.300.0030.01314.09
5.6.290.0110.00314.03
5.6.280.0030.01214.40
5.6.270.0090.00614.42
5.6.260.0090.00614.22
5.6.250.0060.00313.96
5.6.240.0040.01214.15
5.6.230.0030.01014.31
5.6.220.0000.00914.18
5.6.210.0090.00314.34
5.6.200.0030.01014.30
5.6.190.0100.00714.05
5.6.180.0130.00314.53
5.6.170.0140.00014.32
5.6.160.0060.00914.03
5.6.150.0000.01514.64
5.6.140.0070.01114.52
5.6.130.0070.00414.15
5.6.120.0000.01314.47
5.6.110.0030.01013.95
5.6.100.0030.01014.13
5.6.90.0030.01214.31
5.6.80.0130.00014.16
5.6.70.0030.00614.10
5.6.60.0070.00314.28
5.6.50.0060.00614.31
5.6.40.0040.01113.97
5.6.30.0000.01214.04
5.6.20.0030.00714.14
5.6.10.0040.00814.07
5.6.00.0030.00614.18

preferences:
46.5 ms | 400 KiB | 5 Q