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run code in 300+ PHP versions simultaneously
<?php function stringAppend($str) { $str = $str."append"; //không có return } function stringPrepend($str) { $str = "prepend".$str; } $aString = "PHP"; echo stringPrepend(stringAppend($aString));// Không có return

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)
8.3.60.0100.01018.18
8.3.50.0130.00718.35
8.3.40.0120.00318.67
8.3.30.0090.00618.64
8.3.20.0070.00021.80
8.3.10.0070.00023.70
8.3.00.0000.00719.56
8.2.180.0070.01418.04
8.2.170.0150.00422.96
8.2.160.0100.00720.43
8.2.150.0050.00324.18
8.2.140.0030.00624.66
8.2.130.0070.00021.12
8.2.120.0070.00026.35
8.2.110.0060.00319.20
8.2.100.0080.00317.78
8.2.90.0040.00417.84
8.2.80.0070.00018.03
8.2.70.0080.00017.63
8.2.60.0050.00317.63
8.2.50.0000.00817.63
8.2.40.0090.00317.62
8.2.30.0000.00719.31
8.2.20.0000.00818.17
8.2.10.0000.00718.04
8.2.00.0040.00417.99
8.1.280.0110.00325.92
8.1.270.0040.00423.96
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0130.00020.76
8.1.230.0080.00321.04
8.1.220.0050.00317.74
8.1.210.0040.00419.16
8.1.200.0080.00017.23
8.1.190.0040.00417.35
8.1.180.0030.00618.10
8.1.170.0080.00318.42
8.1.160.0000.00818.75
8.1.150.0080.00020.80
8.1.140.0070.00017.64
8.1.130.0000.00818.98
8.1.120.0030.00417.29
8.1.110.0040.00717.45
8.1.100.0000.00717.29
8.1.90.0050.00517.36
8.1.80.0030.00317.40
8.1.70.0030.00317.34
8.1.60.0000.00817.49
8.1.50.0030.00517.39
8.1.40.0000.00817.41
8.1.30.0000.00817.55
8.1.20.0000.00817.70
8.1.10.0040.00417.39
8.1.00.0040.00417.45
8.0.300.0050.00319.98
8.0.290.0000.00716.75
8.0.280.0030.00318.32
8.0.270.0030.00317.25
8.0.260.0030.00319.05
8.0.250.0040.00417.02
8.0.240.0000.00816.83
8.0.230.0070.00016.86
8.0.220.0030.00316.76
8.0.210.0040.00416.80
8.0.200.0030.00316.99
8.0.190.0040.00416.94
8.0.180.0040.00216.92
8.0.170.0060.00316.80
8.0.160.0040.00416.97
8.0.150.0060.00616.88
8.0.140.0030.00316.85
8.0.130.0030.00313.36
8.0.120.0070.00016.91
8.0.110.0040.00416.91
8.0.100.0040.00416.79
8.0.90.0000.00716.91
8.0.80.0110.00316.86
8.0.70.0000.00716.85
8.0.60.0040.00416.84
8.0.50.0040.00416.92
8.0.30.0070.01017.02
8.0.20.0120.00717.40
8.0.10.0000.00816.82
8.0.00.0100.00816.83
7.4.330.0000.00515.55
7.4.320.0000.00616.54
7.4.300.0030.00316.60
7.4.290.0000.00616.52
7.4.280.0000.00716.57
7.4.270.0050.00216.50
7.4.260.0000.00716.56
7.4.250.0030.00416.49
7.4.240.0000.00716.47
7.4.230.0000.00716.70
7.4.220.0030.00516.39
7.4.210.0070.01116.58
7.4.200.0030.00316.40
7.4.160.0090.00816.49
7.4.140.0100.00917.86
7.4.130.0040.01616.48
7.4.120.0130.00516.48
7.4.110.0120.00316.48
7.4.100.0120.00316.67
7.4.90.0060.00916.40
7.4.80.0030.01719.39
7.4.70.0160.00716.35
7.4.60.0120.00916.33
7.4.50.0040.01116.36
7.4.40.0050.01116.59
7.4.00.0070.00914.93
7.3.330.0050.00013.13
7.3.320.0000.00513.16
7.3.310.0000.00716.19
7.3.300.0000.00716.18
7.3.290.0070.00016.16
7.3.280.0090.00716.24
7.3.260.0130.00516.48
7.3.240.0090.00716.46
7.3.230.0140.00416.59
7.3.210.0070.01116.50
7.3.200.0100.00616.20
7.3.190.0090.00616.44
7.3.180.0150.00016.44
7.3.170.0130.01016.42
7.3.160.0110.00316.51
7.3.120.0070.01014.84
7.3.110.0090.00615.04
7.3.100.0090.00614.96
7.3.90.0030.01014.80
7.3.80.0060.00915.01
7.3.70.0070.00314.74
7.3.60.0060.00614.39
7.3.50.0070.01114.59
7.3.40.0070.00414.58
7.3.30.0000.01314.70
7.3.20.0070.00416.66
7.3.10.0080.00416.34
7.3.00.0130.00016.66
7.2.330.0060.01216.62
7.2.320.0100.01316.62
7.2.310.0130.01016.74
7.2.300.0120.00916.86
7.2.290.0120.00616.70
7.2.250.0070.01114.52
7.2.240.0100.00715.18
7.2.230.0070.00315.16
7.2.220.0070.01114.94
7.2.210.0090.00614.93
7.2.200.0030.01014.90
7.2.190.0100.00314.76
7.2.180.0070.01115.00
7.2.170.0000.01614.94
7.2.60.0090.00616.59
7.2.50.0080.00816.99
7.2.40.0870.00817.93
7.2.30.1110.01517.83
7.2.20.1120.01318.05
7.2.10.1140.01117.86
7.2.00.0710.00917.79
7.1.330.0070.00715.71
7.1.320.0040.00715.81
7.1.310.0100.00315.79
7.1.300.0080.00815.68
7.1.290.0040.00815.55
7.1.280.0030.00615.43
7.1.270.0040.00815.59
7.1.260.0100.00615.76
7.1.200.0060.00915.72
7.1.160.0740.01116.87
7.1.150.0740.01116.55
7.1.140.1050.01816.73
7.1.130.0770.01216.83
7.1.120.0760.01016.75
7.1.110.1190.01216.38
7.1.100.1000.01216.16
7.1.90.1180.01516.43
7.1.80.0900.01216.36
7.1.70.0950.01115.05
7.1.60.1340.01633.21
7.1.50.1050.01333.00
7.1.40.1400.01832.43
7.1.30.1360.02232.60
7.1.20.1590.01532.53
7.1.10.1110.01514.71
7.1.00.2070.01214.68

preferences:
57.52 ms | 400 KiB | 5 Q