3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'abc'; var_dump($str['1']); var_dump(isset($str['1'])); var_dump($str['1.0']); var_dump(isset($str['1.0'])); var_dump($str['x']); var_dump(isset($str['x'])); var_dump($str['1x']); var_dump(isset($str['1x']));

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)
8.3.60.0070.00716.49
8.3.50.0080.01216.45
8.3.40.0040.01118.69
8.3.30.0040.01218.67
8.3.20.0080.00018.52
8.3.10.0080.00018.86
8.3.00.0030.00619.17
8.2.180.0070.01517.00
8.2.170.0100.00722.96
8.2.160.0080.00818.96
8.2.150.0040.00424.18
8.2.140.0030.00524.66
8.2.130.0040.00426.16
8.2.120.0070.00020.95
8.2.110.0030.00621.19
8.2.100.0060.00617.78
8.2.90.0000.00819.08
8.2.80.0000.00717.97
8.2.70.0040.00417.50
8.2.60.0030.00517.93
8.2.50.0000.00818.16
8.2.40.0000.00819.35
8.2.30.0030.00617.63
8.2.20.0030.00617.56
8.2.10.0030.00617.80
8.2.00.0000.00717.81
8.1.280.0070.00725.92
8.1.270.0080.00023.99
8.1.260.0000.00826.35
8.1.250.0070.00028.09
8.1.240.0100.00020.91
8.1.230.0090.00317.89
8.1.220.0030.00517.79
8.1.210.0000.00818.77
8.1.200.0030.00617.35
8.1.190.0080.00017.22
8.1.180.0050.00318.10
8.1.170.0040.00417.62
8.1.160.0000.00719.00
8.1.150.0000.00718.45
8.1.140.0040.00417.38
8.1.130.0040.00419.04
8.1.120.0040.00417.30
8.1.110.0040.00417.39
8.1.100.0070.00017.36
8.1.90.0040.00417.45
8.1.80.0000.00717.36
8.1.70.0030.00317.38
8.1.60.0030.00517.41
8.1.50.0050.00217.35
8.1.40.0090.00017.47
8.1.30.0060.00317.68
8.1.20.0000.00917.61
8.1.10.0000.00717.48
8.1.00.0040.00417.37
8.0.300.0050.00318.77
8.0.290.0000.01016.75
8.0.280.0030.00318.63
8.0.270.0030.00317.21
8.0.260.0030.00316.77
8.0.250.0000.00716.93
8.0.240.0000.00716.96
8.0.230.0030.00316.85
8.0.220.0000.00716.86
8.0.210.0040.00416.79
8.0.200.0030.00316.84
8.0.190.0040.00416.82
8.0.180.0040.00816.98
8.0.170.0090.00016.80
8.0.160.0040.00416.87
8.0.150.0040.00416.80
8.0.140.0000.00816.87
8.0.130.0030.00313.30
8.0.120.0040.00416.91
8.0.110.0000.00816.89
8.0.100.0000.00816.87
8.0.90.0020.00516.75
8.0.80.0040.01116.91
8.0.70.0040.00416.80
8.0.60.0000.00916.86
8.0.50.0030.00616.73
8.0.30.0080.01116.94
8.0.20.0130.00916.87
8.0.10.0070.00016.95
8.0.00.0120.00716.77
7.4.330.0000.00512.91
7.4.320.0000.00716.53
7.4.300.0030.00316.30
7.4.290.0000.00716.34
7.4.280.0060.00316.45
7.4.270.0050.00216.55
7.4.260.0030.00313.32
7.4.250.0060.00316.32
7.4.240.0000.00716.50
7.4.230.0030.00716.41
7.4.220.0240.01016.59
7.4.210.0040.01016.38
7.4.200.0000.00716.56
7.4.190.0000.00816.34
7.4.160.0090.00616.25
7.4.150.0120.00616.43
7.4.140.0120.00716.38
7.4.130.0110.00716.43
7.4.120.0140.00316.34
7.4.110.0090.00916.52
7.4.100.0070.01116.57
7.4.90.0110.00816.52
7.4.80.0110.00619.39
7.4.70.0070.01016.41
7.4.60.0100.00616.43
7.4.50.0050.00016.53
7.4.40.0030.00816.35
7.4.30.0080.00816.30
7.4.00.0060.00914.63
7.3.330.0030.00413.08
7.3.320.0050.00013.16
7.3.310.0000.00716.32
7.3.300.0030.00316.38
7.3.290.0090.00716.28
7.3.280.0060.01116.29
7.3.270.0090.00916.41
7.3.260.0130.01016.41
7.3.250.0080.01116.25
7.3.240.0060.01216.28
7.3.230.0110.00616.63
7.3.210.0080.00816.18
7.3.200.0030.01416.38
7.3.190.0060.01216.24
7.3.180.0120.00316.31
7.3.170.0080.00816.41
7.3.160.0120.00416.38
7.3.120.0080.00814.81
7.2.330.0130.00516.38
7.2.320.0090.01616.58
7.2.310.0040.01316.39
7.2.300.0070.01016.38
7.2.290.0110.01116.46
7.2.00.0000.01419.08
7.1.150.0180.01616.81
7.1.100.0240.00317.41
7.1.70.0020.00517.03
7.1.60.0120.01219.30
7.1.50.0100.01316.75
7.1.00.0070.04322.35
7.0.200.0040.00416.55
7.0.140.0030.07721.99
7.0.120.0100.07021.96
7.0.60.0100.07320.00
7.0.50.0030.09017.86
7.0.40.0070.06020.05
7.0.30.0200.04320.16
7.0.20.0170.06020.02
7.0.10.0030.09320.01
7.0.00.0030.05720.17
5.6.280.0070.07021.04
5.6.210.0030.08720.62
5.6.200.0130.07018.22
5.6.190.0170.07320.79
5.6.180.0430.05720.32
5.6.170.0270.05020.44
5.6.160.0130.07720.48
5.6.150.0130.06718.12
5.6.140.0030.08318.20
5.6.130.0000.05718.15
5.6.120.0070.07721.14
5.6.110.0030.08021.11
5.6.100.0000.04321.01
5.6.90.0170.07721.12
5.6.80.0030.06020.35
5.5.350.0170.05720.50
5.5.340.0100.04317.91
5.5.330.0030.04320.41
5.5.320.0370.07320.32
5.5.310.0230.04020.27
5.5.300.0130.07317.95
5.5.290.0030.04717.96
5.5.280.0230.07020.80
5.5.270.0070.08020.85
5.5.260.0100.05720.79
5.5.250.0070.03720.51
5.5.240.0030.07020.12
5.4.450.0030.08019.47
5.4.440.0030.04319.50
5.4.430.0030.04019.27
5.4.420.0000.05019.32
5.4.410.0070.04019.00
5.4.400.0100.04719.11
5.4.390.0100.04019.16
5.4.380.0070.03319.18
5.4.370.0100.07019.04
5.4.360.0070.04018.79
5.4.350.0000.04019.14
5.4.340.0070.04718.79
5.4.320.0130.05318.92
5.4.310.0070.07019.14
5.4.300.0030.07719.20
5.4.290.0130.07319.14
5.4.280.0100.07018.80
5.4.270.0030.06718.80
5.4.260.0070.03718.88
5.4.250.0030.04018.78
5.4.240.0030.04019.07
5.4.230.0030.04318.90
5.4.220.0130.03019.17
5.4.210.0130.04019.17
5.4.200.0070.05019.07
5.4.190.0200.02719.07
5.4.180.0100.03318.99
5.4.170.0100.07719.11
5.4.160.0100.07319.15
5.4.150.0030.04319.09
5.4.140.0070.07016.29
5.4.130.0030.07316.25
5.4.120.0100.07016.47
5.4.110.0100.05316.24
5.4.100.0100.06716.39
5.4.90.0100.03716.30
5.4.80.0030.04016.13
5.4.70.0070.03316.29
5.4.60.0070.07016.32
5.4.50.0030.05316.30
5.4.40.0070.07316.36
5.4.30.0030.03716.30
5.4.20.0030.05716.22
5.4.10.0130.03716.32
5.4.00.0070.06315.66
5.3.290.0130.07314.56
5.3.280.0000.04714.49
5.3.270.0030.05714.50
5.3.260.0100.05714.53
5.3.250.0070.04714.56
5.3.240.0130.04014.54
5.3.230.0070.07714.52
5.3.220.0100.07714.45
5.3.210.0070.06314.48
5.3.200.0000.06714.50
5.3.190.0100.06014.38
5.3.180.0130.07014.65
5.3.170.0070.07314.49
5.3.160.0000.04014.53
5.3.150.0130.06714.50
5.3.140.0000.04014.57
5.3.130.0030.05314.63
5.3.120.0070.05714.47
5.3.110.0100.07314.47
5.3.100.0030.05013.96
5.3.90.0070.07014.13
5.3.80.0130.03714.10
5.3.70.0070.03313.85
5.3.60.0030.07013.95
5.3.50.0000.05313.89
5.3.40.0070.07313.87
5.3.30.0100.06713.89
5.3.20.0100.06713.63
5.3.10.0170.06313.49
5.3.00.0030.04013.72
5.2.170.0030.04011.09
5.2.160.0100.05711.13
5.2.150.0100.04711.09
5.2.140.0030.03711.12
5.2.130.0070.06010.98
5.2.120.0030.04010.98
5.2.110.0000.04010.99
5.2.100.0030.06011.08
5.2.90.0070.06310.96
5.2.80.0030.04710.98
5.2.70.0000.06711.08
5.2.60.0000.05011.13
5.2.50.0030.03311.00
5.2.40.0130.02010.97
5.2.30.0030.03011.12
5.2.20.0070.03710.89
5.2.10.0030.03010.81
5.2.00.0000.06710.70
5.1.60.0030.05310.04
5.1.50.0030.04310.06
5.1.40.0030.0539.95
5.1.30.0070.04710.49
5.1.20.0000.03710.30
5.1.10.0030.04310.13
5.1.00.0070.05010.21
5.0.50.0130.0378.54
5.0.40.0000.0338.48
5.0.30.0070.0278.21
5.0.20.0030.0278.16
5.0.10.0000.0438.18
5.0.00.0000.0438.13
4.4.90.0000.0377.87
4.4.80.0030.0207.87
4.4.70.0030.0377.87
4.4.60.0070.0237.87
4.4.50.0000.0207.87
4.4.40.0000.0537.87
4.4.30.0100.0137.87
4.4.20.0030.0337.87
4.4.10.0070.0307.87
4.4.00.0000.0477.87
4.3.110.0000.0277.87
4.3.100.0030.0237.87
4.3.90.0030.0277.87
4.3.80.0000.0307.87
4.3.70.0100.0277.87
4.3.60.0000.0307.87
4.3.50.0000.0377.87
4.3.40.0000.0337.87
4.3.30.0000.0337.87
4.3.20.0000.0207.87
4.3.10.0000.0137.87
4.3.00.0030.0337.87

preferences:
86.74 ms | 401 KiB | 5 Q