3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace One { function strlen($s) { return '-NS-'; } var_dump(\strlen('HELLO')); var_dump(strlen('HELLO')); var_dump(namespace\strlen('HELLO')); } namespace Two { var_dump(\strlen('HELLO')); var_dump(strlen('HELLO')); var_dump(namespace\strlen('HELLO')); }

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)
8.3.40.0100.00718.76
8.3.30.0150.00018.72
8.3.20.0050.00220.20
8.3.10.0080.00021.73
8.3.00.0080.00017.93
8.2.170.0060.00922.96
8.2.160.0100.00320.34
8.2.150.0080.00024.18
8.2.140.0090.00024.66
8.2.130.0000.00826.16
8.2.120.0110.00017.50
8.2.110.0060.00320.50
8.2.100.0070.00717.84
8.2.90.0080.00019.22
8.2.80.0000.00817.97
8.2.70.0030.00517.36
8.2.60.0040.00417.93
8.2.50.0030.00518.07
8.2.40.0040.00419.38
8.2.30.0030.00320.61
8.2.20.0000.00717.68
8.2.10.0040.00418.13
8.2.00.0000.00717.93
8.1.270.0000.00823.96
8.1.260.0080.00026.35
8.1.250.0030.00728.09
8.1.240.0000.00923.86
8.1.230.0080.00323.86
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0080.00017.35
8.1.190.0080.00017.13
8.1.180.0070.00018.10
8.1.170.0080.00018.49
8.1.160.0070.00021.99
8.1.150.0030.00618.79
8.1.140.0000.00817.36
8.1.130.0000.00717.60
8.1.120.0040.00417.43
8.1.110.0000.00717.39
8.1.100.0070.00017.34
8.1.90.0000.00817.31
8.1.80.0000.00717.27
8.1.70.0000.00717.36
8.1.60.0030.00517.57
8.1.50.0030.00517.36
8.1.40.0030.00617.36
8.1.30.0030.00517.45
8.1.20.0000.00817.57
8.1.10.0050.00317.43
8.1.00.0040.00417.51
8.0.300.0000.00818.77
8.0.290.0040.00416.75
8.0.280.0000.00718.29
8.0.270.0030.00317.22
8.0.260.0030.00517.13
8.0.250.0030.00516.97
8.0.240.0050.00316.97
8.0.230.0060.00317.02
8.0.220.0080.00016.92
8.0.210.0030.00316.84
8.0.200.0060.00016.91
8.0.190.0050.00316.98
8.0.180.0040.00416.90
8.0.170.0050.00316.97
8.0.160.0000.00816.86
8.0.150.0030.00516.77
8.0.140.0030.00316.86
8.0.130.0060.00013.30
8.0.120.0050.00316.87
8.0.110.0030.00516.90
8.0.100.0080.00016.93
8.0.90.0070.00016.95
8.0.80.0130.00316.84
8.0.70.0050.00316.80
8.0.60.0000.00716.89
8.0.50.0050.00216.80
8.0.30.0100.00617.06
8.0.20.0130.00717.40
8.0.10.0050.00317.10
8.0.00.0100.00916.61
7.4.330.0000.00515.08
7.4.320.0000.00616.55
7.4.300.0000.00616.52
7.4.290.0030.00316.55
7.4.280.0000.00716.56
7.4.270.0000.00716.49
7.4.260.0000.00716.44
7.4.250.0040.00416.42
7.4.240.0040.00416.42
7.4.230.0030.00316.31
7.4.220.0030.01416.59
7.4.210.0090.00616.68
7.4.200.0000.00716.60
7.4.160.0080.00816.45
7.4.150.0190.00017.40
7.4.140.0100.01217.86
7.4.130.0060.01016.60
7.4.120.0080.01016.51
7.4.110.0120.00616.53
7.4.100.0120.01216.53
7.4.90.0120.00616.63
7.4.80.0090.01519.39
7.4.70.0120.00916.50
7.4.60.0120.00316.57
7.4.50.0040.00416.26
7.4.40.0100.00716.49
7.4.30.0150.00816.46
7.4.00.0090.00614.97
7.3.330.0050.00013.29
7.3.320.0000.00513.12
7.3.310.0030.00316.34
7.3.300.0030.00316.35
7.3.290.0050.01316.30
7.3.280.0070.01116.32
7.3.270.0140.00317.40
7.3.260.0170.00716.53
7.3.250.0080.00816.35
7.3.240.0140.00816.45
7.3.230.0080.00916.50
7.3.210.0140.00316.54
7.3.200.0100.00716.21
7.3.190.0110.00616.45
7.3.180.0120.01216.39
7.3.170.0100.00716.28
7.3.160.0110.00616.57
7.3.10.0030.01016.54
7.3.00.0090.00516.54
7.2.330.0180.00316.58
7.2.320.0150.00316.53
7.2.310.0030.01416.50
7.2.300.0110.00516.75
7.2.290.0030.01516.77
7.2.130.0040.00916.62
7.2.120.0080.00516.62
7.2.110.0210.00416.61
7.2.100.0050.00816.86
7.2.90.0100.00316.60
7.2.80.0030.00916.70
7.2.70.0070.00516.74
7.2.60.0090.00616.74
7.2.50.0040.00916.77
7.2.40.0070.00516.68
7.2.30.0060.00616.61
7.2.20.0090.00516.69
7.2.10.0030.00916.62
7.2.00.0090.00517.57
7.1.250.0050.00915.49
7.1.240.0060.01015.32
7.1.230.0040.01115.40
7.1.220.0060.00615.47
7.1.210.0090.00615.47
7.1.200.0040.01015.62
7.1.190.0090.00615.56
7.1.180.0090.00615.40
7.1.170.0040.01115.48
7.1.160.0060.00615.51
7.1.150.0060.00915.39
7.1.140.0060.00615.38
7.1.130.0040.00715.01
7.1.120.0070.00715.46
7.1.110.0070.00415.39
7.1.100.0050.00616.72
7.1.90.0040.00715.50
7.1.80.0080.00315.54
7.1.70.0040.00516.33
7.1.60.0100.00817.38
7.1.50.0060.01316.23
7.1.40.0030.00715.44
7.1.30.0110.00415.55
7.1.20.0100.01015.69
7.1.10.0110.00415.62
7.1.00.0050.03818.96
7.0.330.0100.00315.24
7.0.320.0070.00714.91
7.0.310.0030.01015.12
7.0.300.0120.00415.16
7.0.290.0030.00915.14
7.0.280.0040.00814.98
7.0.270.0030.01015.08
7.0.260.0110.00414.71
7.0.250.0080.00615.08
7.0.240.0100.00714.75
7.0.230.0070.01014.72
7.0.220.0100.00314.68
7.0.210.0080.00414.98
7.0.200.0040.00815.74
7.0.190.0090.00314.86
7.0.180.0070.01015.08
7.0.170.0070.00715.16
7.0.160.0090.00315.21
7.0.150.0040.01115.15
7.0.140.0110.00415.15
7.0.130.0160.00015.26
7.0.120.0100.00314.79
7.0.110.0040.01115.32
7.0.100.0040.00814.95
7.0.90.0100.00314.91
7.0.80.0120.00015.23
7.0.70.0070.00714.98
7.0.60.0100.04517.29
7.0.50.0060.04716.57
7.0.40.0080.04516.61
7.0.30.0150.03516.57
7.0.20.0170.03816.65
7.0.10.0020.02916.58
7.0.00.0030.04616.67
5.6.380.0150.00014.31
5.6.370.0070.00714.30
5.6.360.0000.00813.69
5.6.350.0000.01013.72
5.6.340.0000.00914.11
5.6.330.0080.00314.12
5.6.320.0080.00414.08
5.6.310.0000.01114.14
5.6.300.0060.00613.93
5.6.290.0110.00014.09
5.6.280.0050.03317.38
5.6.270.0070.00314.03
5.6.260.0000.00813.93
5.6.250.0100.00013.70
5.6.240.0090.00313.98
5.6.230.0000.01413.90
5.6.220.0060.00613.98
5.6.210.0050.04317.14
5.6.200.0030.02716.01
5.6.190.0060.04317.08
5.6.180.0120.02917.38
5.6.170.0180.02617.10
5.6.160.0100.03517.14
5.6.150.0060.02015.92
5.6.140.0070.03716.07
5.6.130.0070.04516.21
5.6.120.0060.04317.52
5.6.110.0100.02817.43
5.6.100.0060.02717.30
5.6.90.0100.02317.50
5.6.80.0070.02217.25
5.6.70.0130.00014.07
5.6.60.0030.01013.88
5.6.50.0060.00313.84
5.6.40.0030.00613.79
5.6.30.0030.01013.65
5.6.20.0030.00713.60
5.6.10.0000.01313.94
5.6.00.0030.01013.80
5.5.380.0050.00210.90
5.5.370.0000.00810.90
5.5.360.0030.00310.90
5.5.350.0120.03115.65
5.5.340.0030.04114.47
5.5.330.0080.03515.65
5.5.320.0080.02015.64
5.5.310.0100.02515.64
5.5.300.0070.02014.47
5.5.290.0080.02114.58
5.5.280.0070.04315.84
5.5.270.0100.03915.93
5.5.260.0070.04215.84
5.5.250.0060.02015.79
5.5.240.0040.04415.57
5.5.230.0030.00310.90
5.5.220.0040.00410.90
5.5.210.0000.00710.90
5.5.200.0000.00710.90
5.5.190.0060.00311.07
5.5.180.0070.00710.90
5.5.170.0030.00610.90
5.5.160.0080.00010.90
5.5.150.0030.00610.90
5.5.140.0000.00710.93
5.5.130.0060.00310.90
5.5.120.0000.00910.90
5.5.110.0040.00410.90
5.5.100.0030.00311.02
5.5.90.0070.00011.00
5.5.80.0030.00710.90
5.5.70.0080.00010.90
5.5.60.0030.00510.90
5.5.50.0060.00310.90
5.5.40.0000.01010.93
5.5.30.0030.00710.90
5.5.20.0040.00410.91
5.5.10.0000.00810.90
5.5.00.0110.00010.92
5.4.450.0170.03315.29
5.4.440.0160.03515.14
5.4.430.0230.02615.12
5.4.420.0210.04215.28
5.4.410.0150.03615.05
5.4.400.0240.02414.88
5.4.390.0230.03514.88
5.4.380.0170.03715.09
5.4.370.0180.02815.09
5.4.360.0190.02915.08
5.4.350.0200.02914.87
5.4.340.0210.02715.08
5.4.330.0000.01110.90
5.4.320.0130.03514.87
5.4.310.0200.02615.08
5.4.300.0200.02715.08
5.4.290.0130.03215.09
5.4.280.0150.03114.88
5.4.270.0240.03415.09
5.4.260.0190.02714.95
5.4.250.0180.02715.02
5.4.240.0190.02915.10
5.4.230.0230.02514.97
5.4.220.0220.02815.06
5.4.210.0220.03715.00
5.4.200.0190.03815.09
5.4.190.0280.02215.10
5.4.180.0230.02214.86
5.4.170.0270.03215.10
5.4.160.0150.03315.07
5.4.150.0190.03115.18
5.4.140.0240.03613.82
5.4.130.0130.03213.76
5.4.120.0280.03013.78
5.4.110.0200.03513.68
5.4.100.0240.03113.75
5.4.90.0180.03013.79
5.4.80.0180.03213.76
5.4.70.0220.02813.61
5.4.60.0180.01913.69
5.4.50.0200.03613.73
5.4.40.0110.02113.66
5.4.30.0250.02613.73
5.4.20.0120.02913.71
5.4.10.0130.02413.74
5.4.00.0100.00610.90

preferences:
50.85 ms | 400 KiB | 5 Q