3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = ''; $$x = 'empty'; var_dump( ${''} ); $x = 'red'; $$x = 'empty'; var_dump( ${'red'} );

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)
8.3.40.0120.00318.53
8.3.30.0090.00919.01
8.3.20.0040.00420.16
8.3.10.0040.00423.71
8.3.00.0030.00717.11
8.2.170.0070.00722.96
8.2.160.0000.01420.37
8.2.150.0090.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00422.18
8.2.110.0090.00020.32
8.2.100.0030.00717.97
8.2.90.0080.00019.18
8.2.80.0090.00017.97
8.2.70.0000.00817.50
8.2.60.0030.00517.90
8.2.50.0030.00618.07
8.2.40.0040.00319.95
8.2.30.0030.00518.17
8.2.20.0000.00717.87
8.2.10.0050.00318.04
8.2.00.0050.00217.54
8.1.270.0060.00324.01
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0090.00023.83
8.1.230.0040.00819.16
8.1.220.0000.00917.74
8.1.210.0080.00018.77
8.1.200.0000.00817.22
8.1.190.0040.00417.22
8.1.180.0080.00018.10
8.1.170.0000.00818.50
8.1.160.0040.00421.92
8.1.150.0040.00418.95
8.1.140.0050.00217.38
8.1.130.0000.00717.73
8.1.120.0000.00717.52
8.1.110.0040.00417.34
8.1.100.0040.00417.47
8.1.90.0060.00317.40
8.1.80.0030.00417.34
8.1.70.0040.00417.47
8.1.60.0080.00017.56
8.1.50.0000.00917.48
8.1.40.0040.00417.50
8.1.30.0000.00917.55
8.1.20.0070.00017.63
8.1.10.0000.00717.45
8.1.00.0030.00617.39
8.0.300.0000.00718.77
8.0.290.0070.00016.75
8.0.280.0030.00318.36
8.0.270.0030.00516.88
8.0.260.0000.00817.13
8.0.250.0070.00016.84
8.0.240.0030.00516.95
8.0.230.0000.00716.92
8.0.220.0030.00316.77
8.0.210.0030.00316.80
8.0.200.0000.00716.82
8.0.190.0000.00716.99
8.0.180.0000.00716.80
8.0.170.0060.00316.79
8.0.160.0070.00016.84
8.0.150.0040.00416.87
8.0.140.0020.00516.73
8.0.130.0000.00613.32
8.0.120.0040.00416.81
8.0.110.0040.00416.83
8.0.100.0070.00016.92
8.0.90.0040.00416.88
8.0.80.0070.01016.88
8.0.70.0040.00416.91
8.0.60.0000.00716.77
8.0.50.0070.00016.68
8.0.30.0170.00317.21
8.0.20.0130.00917.40
8.0.10.0040.00416.99
8.0.00.0100.00716.83
7.4.330.0000.00415.00
7.4.320.0030.00316.60
7.4.300.0080.00016.50
7.4.290.0040.00416.55
7.4.280.0080.00016.50
7.4.270.0070.00016.55
7.4.260.0090.00016.59
7.4.250.0040.00416.44
7.4.240.0050.00216.49
7.4.230.0000.00716.42
7.4.220.0070.01116.45
7.4.210.0070.00716.50
7.4.200.0050.00216.39
7.4.160.0100.00616.43
7.4.150.0140.00317.40
7.4.140.0110.00717.86
7.4.130.0070.01316.48
7.4.120.0120.01116.45
7.4.110.0070.01416.49
7.4.100.0060.01216.39
7.4.90.0090.00816.50
7.4.80.0070.01019.39
7.4.70.0060.01616.58
7.4.60.0060.01016.45
7.4.50.0030.00516.53
7.4.40.0100.00716.36
7.4.30.0070.01016.52
7.4.00.0060.00915.12
7.3.330.0020.00212.88
7.3.320.0030.00313.04
7.3.310.0040.00416.03
7.3.300.0070.00016.16
7.3.290.0060.01116.23
7.3.280.0090.00916.17
7.3.270.0090.00917.40
7.3.260.0130.01016.35
7.3.250.0100.00916.24
7.3.240.0070.01016.23
7.3.230.0100.00716.48
7.3.210.0140.00416.54
7.3.200.0060.01219.39
7.3.190.0110.00816.38
7.3.180.0040.01216.52
7.3.170.0040.01116.27
7.3.160.0170.00316.14
7.3.10.0000.01416.72
7.3.00.0130.00416.56
7.2.330.0100.00716.59
7.2.320.0090.00616.29
7.2.310.0110.00716.54
7.2.300.0120.00816.51
7.2.290.0110.00516.52
7.2.130.0090.00716.73
7.2.120.0110.00416.81
7.2.110.0070.01316.86
7.2.100.0020.01316.74
7.2.90.0090.00616.53
7.2.80.0080.00516.44
7.2.70.0040.00916.66
7.2.60.0050.00816.71
7.2.50.0120.00516.71
7.2.40.0060.00716.63
7.2.30.0010.01216.66
7.2.20.0080.00716.64
7.2.10.0060.00716.84
7.2.00.0110.00717.65
7.1.250.0110.00915.66
7.1.240.0140.00615.84
7.1.230.0200.00015.68
7.1.220.0050.00715.77
7.1.210.0060.00615.80
7.1.200.0080.00415.91
7.1.190.0070.00715.75
7.1.180.0030.01015.80
7.1.170.0070.00715.65
7.1.160.0050.00815.62
7.1.150.0040.00415.68
7.1.140.0100.00315.82
7.1.130.0110.00415.82
7.1.120.0060.00615.57
7.1.110.0030.00615.63
7.1.100.0020.01016.73
7.1.90.0060.00315.78
7.1.80.0030.00915.75
7.1.70.0030.00816.16
7.1.60.0120.00717.62
7.1.50.0060.01116.24
7.1.40.0070.01015.72
7.1.30.0070.00715.70
7.1.20.0060.00615.51
7.1.10.0030.00715.50
7.1.00.0050.04319.14
7.0.330.0090.01215.10
7.0.320.0070.00715.36
7.0.310.0060.01015.43
7.0.300.0090.00615.26
7.0.290.0040.00815.05
7.0.280.0030.00915.44
7.0.270.0030.01015.29
7.0.260.0130.00315.44
7.0.250.0040.00415.50
7.0.240.0060.00915.51
7.0.230.0030.00915.08
7.0.220.0030.00715.16
7.0.210.0040.00415.36
7.0.200.0020.01015.99
7.0.190.0090.00915.11
7.0.180.0100.00315.16
7.0.170.0030.00615.32
7.0.160.0030.00715.29
7.0.150.0070.00715.39
7.0.140.0030.04118.73
7.0.130.0060.00315.51
7.0.120.0040.00415.55
7.0.110.0040.01115.36
7.0.100.0030.01215.04
7.0.90.0100.00615.31
7.0.80.0100.00315.45
7.0.70.0110.00015.45
7.0.60.0000.02817.52
7.0.50.0020.04016.67
7.0.40.0050.04716.70
7.0.30.0100.02816.89
7.0.20.0230.03916.68
7.0.10.0120.02316.69
7.0.00.0040.02616.68
5.6.380.0160.00414.28
5.6.370.0030.00914.25
5.6.360.0060.00913.91
5.6.350.0070.00714.26
5.6.340.0040.00714.25
5.6.330.0040.00714.28
5.6.320.0030.00614.16
5.6.310.0040.01114.52
5.6.300.0040.00814.03
5.6.290.0130.00014.02
5.6.280.0020.04317.37
5.6.270.0030.00914.10
5.6.260.0000.01413.85
5.6.250.0110.00314.23
5.6.240.0110.00414.21
5.6.230.0000.01314.02
5.6.220.0030.01013.98
5.6.210.0050.04517.40
5.6.200.0080.02816.25
5.6.190.0070.02617.42
5.6.180.0150.01817.13
5.6.170.0230.02517.30
5.6.160.0060.03117.28
5.6.150.0100.04016.27
5.6.140.0030.03516.05
5.6.130.0050.02316.35
5.6.120.0060.04417.61
5.6.110.0100.04317.63
5.6.100.0150.04117.57
5.6.90.0150.03817.36
5.6.80.0120.03017.20
5.6.70.0080.00414.24
5.6.60.0030.00713.90
5.6.50.0110.00313.96
5.6.40.0110.00314.41
5.6.30.0000.01414.11
5.6.20.0100.00713.86
5.6.10.0040.01514.07
5.6.00.0070.01014.17
5.5.380.0040.00811.06
5.5.370.0070.00310.87
5.5.360.0090.00310.97
5.5.350.0100.02915.57
5.5.340.0030.02414.39
5.5.330.0070.04515.44
5.5.320.0270.03515.66
5.5.310.0120.04815.51
5.5.300.0050.04214.49
5.5.290.0080.03714.36
5.5.280.0080.03815.95
5.5.270.0100.04015.76
5.5.260.0120.04015.97
5.5.250.0050.03815.69
5.5.240.0120.02515.66
5.5.230.0000.00910.77
5.5.220.0080.00010.80
5.5.210.0030.01010.74
5.5.200.0040.00810.80
5.5.190.0080.00310.71
5.5.180.0000.00610.60
5.5.170.0110.00010.95
5.5.160.0030.00610.92
5.5.150.0000.00610.92
5.5.140.0040.00810.86
5.5.130.0030.00910.45
5.5.120.0070.00310.66
5.5.110.0080.00810.89
5.5.100.0090.00610.96
5.5.90.0030.00710.92
5.5.80.0000.01111.00
5.5.70.0050.00510.78
5.5.60.0060.00610.88
5.5.50.0000.01010.80
5.5.40.0070.00310.96
5.5.30.0070.00310.90
5.5.20.0060.00310.65
5.5.10.0030.00310.96
5.5.00.0090.00611.03
5.4.450.0460.03915.36
5.4.440.0120.03915.09
5.4.430.0630.03615.07
5.4.420.0370.00315.18
5.4.410.0360.00115.02
5.4.400.0340.00114.79
5.4.390.0330.00314.89
5.4.380.0350.00514.87
5.4.370.0340.00414.92
5.4.360.0320.00614.93
5.4.350.0320.00614.96
5.4.340.0050.02111.43
5.4.330.0040.00410.79
5.4.320.0020.02411.63
5.4.310.0050.02411.65
5.4.300.0020.02111.74
5.4.290.0080.01911.74
5.4.280.0050.01711.60
5.4.270.0060.02011.57
5.4.260.0020.02411.45
5.4.250.0070.02211.71
5.4.240.0050.02211.62
5.4.230.0040.02311.59
5.4.220.0020.02111.55
5.4.210.0070.01811.54
5.4.200.0040.02511.62
5.4.190.0090.01711.73
5.4.180.0050.02211.49
5.4.170.0030.02311.65
5.4.160.0060.02211.72
5.4.150.0060.02011.61
5.4.140.0020.02311.49
5.4.130.0070.01811.43
5.4.120.0060.01911.59
5.4.110.0070.01911.57
5.4.100.0040.02411.35
5.4.90.0080.02711.49
5.4.80.0050.02211.36
5.4.70.0070.02011.21
5.4.60.0050.02111.38
5.4.50.0070.01511.22
5.4.40.0060.01811.34
5.4.30.0030.02211.43
5.4.20.0060.02011.41
5.4.10.0080.01511.41
5.4.00.0050.02411.21
5.3.290.0050.02111.52
5.3.280.0020.02311.47
5.3.270.0040.02311.55
5.3.260.0040.02411.48
5.3.250.0040.02111.48
5.3.240.0040.02311.48
5.3.230.0060.02111.53
5.3.220.0020.02411.46
5.3.210.0090.01911.53
5.3.200.0060.01911.46
5.3.190.0060.02111.46
5.3.180.0070.02011.57
5.3.170.0050.02411.61
5.3.160.0090.01911.56
5.3.150.0050.02011.60
5.3.140.0070.01811.56
5.3.130.0050.02311.45
5.3.120.0040.02211.48
5.3.110.0050.02111.45
5.3.100.0040.02211.22
5.3.90.0030.02111.23
5.3.80.0070.01911.18
5.3.70.0040.02011.16
5.3.60.0040.02011.28
5.3.50.0070.01911.12
5.3.40.0050.02111.18
5.3.30.0050.01911.12
5.3.20.0040.02111.09
5.3.10.0070.01610.96
5.3.00.0040.02310.96
5.2.170.0060.0159.71
5.2.160.0030.0169.71
5.2.150.0020.0209.71
5.2.140.0020.0199.70
5.2.130.0060.0149.68
5.2.120.0060.0169.68
5.2.110.0040.0179.69
5.2.100.0040.0189.68
5.2.90.0020.0199.68
5.2.80.0040.0179.68
5.2.70.0080.0169.68
5.2.60.0030.0189.66
5.2.50.0070.0159.65
5.2.40.0020.0169.63
5.2.30.0040.0189.62
5.2.20.0060.0169.62
5.2.10.0050.0179.58
5.2.00.0040.0179.50
5.1.60.0020.0159.15
5.1.50.0030.0139.14
5.1.40.0010.0179.14
5.1.30.0020.0179.31
5.1.20.0040.0159.32
5.1.10.0030.0159.18
5.1.00.0050.0169.18
5.0.50.0010.0138.43
5.0.40.0050.0108.35
5.0.30.0030.0188.26
5.0.20.0020.0128.24
5.0.10.0060.0118.23
5.0.00.0040.0178.23
4.4.90.0060.0077.51
4.4.80.0030.0097.49
4.4.70.0030.0087.49
4.4.60.0030.0107.50
4.4.50.0040.0097.50
4.4.40.0010.0147.47
4.4.30.0020.0097.50
4.4.20.0020.0107.54
4.4.10.0030.0087.54
4.4.00.0010.0167.50
4.3.110.0030.0097.45
4.3.100.0030.0097.45
4.3.90.0020.0097.43
4.3.80.0030.0147.41
4.3.70.0020.0097.43
4.3.60.0030.0077.43
4.3.50.0020.0097.43
4.3.40.0010.0147.38
4.3.30.0020.0106.76
4.3.20.0040.0096.75
4.3.10.0010.0116.73
4.3.00.0030.0148.90

preferences:
43.08 ms | 400 KiB | 5 Q