3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test{ const AB♥ = "alphabet"; } $rc = new ReflectionClass("Test"); $bad = "♥"; $key = array_keys( $rc->getConstants())[0]; //$substr = substr( $key, -1,1 ); $substr = mb_substr( $key, -1,1 ); // 5.6 if ( $substr === $bad ) { trigger_error( "'$bad' in '$key'" ); } // Notice: '♥' in 'AB♥' ...

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)
8.3.60.0120.00316.47
8.3.50.0110.00922.77
8.3.40.0070.00718.94
8.3.30.0170.00019.04
8.3.20.0040.00420.33
8.3.10.0070.00023.84
8.3.00.0040.00417.38
8.2.180.0120.00918.41
8.2.170.0160.00622.96
8.2.160.0070.01420.55
8.2.150.0060.00324.18
8.2.140.0000.00824.66
8.2.130.0150.00326.16
8.2.120.0080.00020.88
8.2.110.0070.00322.21
8.2.100.0030.00717.84
8.2.90.0000.00919.17
8.2.80.0060.00317.97
8.2.70.0040.00417.75
8.2.60.0040.00417.93
8.2.50.0030.00618.07
8.2.40.0000.00919.95
8.2.30.0030.00518.04
8.2.20.0040.00417.73
8.2.10.0000.00718.19
8.2.00.0040.00417.86
8.1.280.0040.01125.92
8.1.270.0030.00623.96
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0060.00323.87
8.1.230.0030.00919.16
8.1.220.0060.00317.74
8.1.210.0030.00518.77
8.1.200.0160.00216.88
8.1.190.0080.00017.00
8.1.180.0040.00418.10
8.1.170.0060.00318.46
8.1.160.0070.00321.94
8.1.150.0040.00418.88
8.1.140.0040.00417.39
8.1.130.0000.00717.68
8.1.120.0020.00517.43
8.1.110.0030.00517.40
8.1.100.0040.00417.44
8.1.90.0050.00317.30
8.1.80.0030.00317.40
8.1.70.0000.00717.38
8.1.60.0030.00517.60
8.1.50.0060.00317.57
8.1.40.0030.00617.57
8.1.30.0030.00517.62
8.1.20.0000.00717.61
8.1.10.0000.00717.64
8.1.00.0000.00717.57
8.0.300.0000.00718.77
8.0.290.0070.00016.88
8.0.280.0000.00718.55
8.0.270.0030.00317.33
8.0.260.0000.00617.30
8.0.250.0030.00417.09
8.0.240.0070.00016.98
8.0.230.0040.00417.10
8.0.220.0000.00716.90
8.0.210.0040.00416.96
8.0.200.0030.00317.05
8.0.190.0000.00817.09
8.0.180.0070.00017.06
8.0.170.0040.00416.93
8.0.160.0000.00717.00
8.0.150.0070.00416.97
8.0.140.0070.00017.04
8.0.130.0050.00213.55
8.0.120.0000.00816.89
8.0.110.0070.00016.94
8.0.100.0040.00417.00
8.0.90.0070.00017.13
8.0.80.0120.00617.00
8.0.70.0040.00417.08
8.0.60.0030.00517.07
8.0.50.0000.00716.90
8.0.30.0140.00516.97
8.0.20.0110.01117.40
8.0.10.0040.00416.86
8.0.00.0170.00516.89
7.4.330.0050.00015.00
7.4.320.0030.00316.49
7.4.300.0000.00616.52
7.4.290.0070.00016.41
7.4.280.0040.00416.51
7.4.270.0030.00316.50
7.4.260.0000.00816.48
7.4.250.0040.00416.54
7.4.240.0040.00416.55
7.4.230.0070.00016.41
7.4.220.0090.00916.63
7.4.210.0030.01416.54
7.4.200.0080.00016.55
7.4.160.0070.01116.68
7.4.150.0100.00717.40
7.4.140.0140.00317.86
7.4.130.0140.00316.54
7.4.120.0060.01116.57
7.4.110.0140.00316.60
7.4.100.0120.01216.66
7.4.90.0060.01616.77
7.4.80.0090.00919.39
7.4.70.0070.01316.52
7.4.60.0070.01016.70
7.4.50.0000.00716.59
7.4.40.0030.01816.57
7.4.30.0060.00916.55
7.4.00.0000.01614.93
7.3.330.0030.00513.37
7.3.320.0030.00513.30
7.3.310.0030.00316.19
7.3.300.0030.00316.30
7.3.290.0040.01116.27
7.3.280.0130.00416.33
7.3.270.0070.01417.40
7.3.260.0000.01716.26
7.3.250.0100.00816.53
7.3.240.0160.00016.34
7.3.230.0060.01016.63
7.3.210.0080.01216.37
7.3.200.0090.01219.39
7.3.190.0100.01016.50
7.3.180.0060.00916.34
7.3.170.0140.00716.60
7.3.160.0070.01416.41
7.3.10.0060.00916.78
7.3.00.0070.00716.80
7.2.330.0110.00916.47
7.2.320.0120.00916.53
7.2.310.0110.00616.57
7.2.300.0120.00916.34
7.2.290.0100.00616.49
7.2.130.0030.00716.89
7.2.120.0000.01416.79
7.2.110.0080.01116.82
7.2.100.0080.01416.87
7.2.90.0060.00916.92
7.2.80.0060.00816.50
7.2.70.0120.00316.70
7.2.60.0050.00916.65
7.2.50.0140.00617.03
7.2.40.0040.01116.89
7.2.30.0030.00916.67
7.2.20.0060.00317.00
7.2.10.0080.00317.00
7.2.00.0070.00716.68
7.1.250.0030.00615.95
7.1.200.0060.00615.58
7.1.70.0060.00616.97
7.1.60.0140.01019.40
7.1.50.0030.02116.99
7.1.00.0000.08022.36
7.0.200.0150.00414.67
7.0.140.0030.07722.13
7.0.60.0030.05719.92
7.0.50.0100.04717.86
7.0.40.0070.04020.04
7.0.30.0530.07020.20
7.0.20.0300.08020.26
7.0.10.0000.04320.06
7.0.00.0170.06020.15
5.6.280.0070.07020.99
5.6.210.0030.08020.56
5.6.200.0130.07318.25
5.6.190.0070.07720.50
5.6.180.3370.04320.67
5.6.170.0330.07720.53
5.6.160.0000.09320.50
5.6.150.0070.06018.18
5.6.140.0100.05318.24
5.6.130.0000.05318.23
5.6.120.0030.04321.06
5.6.110.0130.07321.11
5.6.100.0070.03720.97
5.6.90.0000.04721.10
5.6.80.0030.03720.53
5.6.70.3730.03720.37
5.5.350.0000.08720.33
5.5.340.0070.03718.02
5.5.330.0130.05020.56
5.5.320.0200.04320.35
5.5.310.0400.07020.26
5.5.300.0170.07318.00
5.5.290.0030.07018.09
5.5.280.0070.04320.87
5.5.270.0070.06020.64
5.5.260.0130.08020.84
5.5.250.0030.09320.57
5.5.240.0270.07320.26
5.4.450.0370.05719.45
5.4.440.0030.06719.48
5.4.430.0100.07019.23
5.4.420.0030.06019.51
5.4.410.0070.07318.86
5.4.400.0100.05318.76
5.4.390.0170.07018.63
5.4.380.0100.05018.53
5.4.370.0070.04018.82
5.4.360.0200.04018.77
5.4.350.0120.03812.01
5.4.340.0070.04012.02
5.4.320.0070.03412.50
5.4.310.0060.03912.49
5.4.300.0080.03412.50
5.4.290.0070.03612.49
5.4.280.0040.03712.39
5.4.270.0060.03612.39
5.4.260.0070.03512.39
5.4.250.0040.03812.39
5.4.240.0060.03512.39
5.4.230.0070.03612.38
5.4.220.0070.03312.38
5.4.210.0060.03412.38
5.4.200.0060.03812.39
5.4.190.0070.03412.38
5.4.180.0070.04312.38
5.4.170.0070.03412.39
5.4.160.0060.03712.39
5.4.150.0050.03612.38
5.4.140.0060.04012.07
5.4.130.0050.03512.05
5.4.120.0080.03112.02
5.4.110.0040.04012.00
5.4.100.0050.03612.01
5.4.90.0050.04312.01
5.4.80.0050.03712.00
5.4.70.0040.03412.00
5.4.60.0050.03412.01
5.4.50.0070.03312.00
5.4.40.0050.03512.00
5.4.30.0110.03311.99
5.4.20.0050.03611.99
5.4.10.0050.03511.99
5.4.00.0060.03611.48
5.3.290.0050.04012.80
5.3.280.0100.03412.71
5.3.270.0110.03712.72
5.3.260.0090.03712.72
5.3.250.0060.03712.71
5.3.240.0070.03612.72
5.3.230.0050.03812.71
5.3.220.0090.03512.68
5.3.210.0080.04612.68
5.3.200.0060.03712.68
5.3.190.0040.03812.68
5.3.180.0050.03612.67
5.3.170.0100.03112.67
5.3.160.0050.03512.68
5.3.150.0050.04112.67
5.3.140.0070.03412.66
5.3.130.0050.03912.66
5.3.120.0080.03712.66
5.3.110.0050.04212.66
5.3.100.0070.03512.12
5.3.90.0090.03312.10
5.3.80.0030.03912.09
5.3.70.0030.03812.09
5.3.60.0040.04412.08
5.3.50.0090.03712.03
5.3.40.0090.03212.02
5.3.30.0060.03511.98
5.3.20.0040.03711.76
5.3.10.0060.03311.73
5.3.00.0060.03811.71
5.2.170.0050.0309.22
5.2.160.0060.0279.22
5.2.150.0040.0309.22
5.2.140.0050.0319.21
5.2.130.0040.0299.18
5.2.120.0040.0289.18
5.2.110.0060.0279.18
5.2.100.0070.0259.18
5.2.90.0040.0289.18
5.2.80.0040.0319.16
5.2.70.0110.0269.16
5.2.60.0030.0319.13
5.2.50.0090.0399.10
5.2.40.0080.0319.07
5.2.30.0080.0279.05
5.2.20.0060.0269.04
5.2.10.0040.0368.94
5.2.00.0050.0348.80
5.1.60.0010.0278.09
5.1.50.0050.0338.09
5.1.40.0040.0258.07
5.1.30.0020.0278.41
5.1.20.0030.0378.44
5.1.10.0020.0348.16
5.1.00.0010.0288.17
5.0.50.0040.0196.64
5.0.40.0050.0176.50
5.0.30.0020.0326.31
5.0.20.0060.0166.27
5.0.10.0030.0206.26
5.0.00.0030.0306.25
4.4.90.0020.0164.78
4.4.80.0040.0134.75
4.4.70.0020.0164.76
4.4.60.0020.0164.76
4.4.50.0020.0164.77
4.4.40.0010.0264.71
4.4.30.0030.0154.76
4.4.20.0030.0224.85
4.4.10.0020.0164.85
4.4.00.0000.0274.76
4.3.110.0050.0134.67
4.3.100.0040.0134.67
4.3.90.0020.0154.63
4.3.80.0040.0244.59
4.3.70.0020.0164.63
4.3.60.0020.0154.63
4.3.50.0030.0154.63
4.3.40.0040.0234.54
4.3.30.0010.0173.30
4.3.20.0010.0183.28
4.3.10.0010.0173.24
4.3.00.0030.0206.84

preferences:
39.36 ms | 401 KiB | 5 Q