3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(-1); // show all possible errors $obj = new stdclass(); $arr = array(); echo '$arr = array(); var_dump($arr[\'foo\']);'; var_dump($arr['foo']); echo "\n"; echo '$arr = array(); $obj = new stdclass(); var_dump($arr[$obj]);'; var_dump($arr[$obj]); echo "\n"; $arr = null; echo '$arr = null; var_dump($arr[\'foo\']);'; var_dump($arr['foo']); echo "\n"; echo '$arr = null; $obj = new stdclass(); var_dump($arr[$obj]);'; var_dump($arr[$obj]); echo "\n"; echo '$arr = null; $arr[\'i\'] = $arr[\'i\'] + 1;'; $arr['i'] = $arr['i'] + 1; echo "\n"; echo '$arr = null; $arr[\'i\']++;'; $arr = null; $arr['i']++; ?>

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)
8.3.60.0130.00618.30
8.3.50.0110.00521.99
8.3.40.0070.01418.79
8.3.30.0000.01519.07
8.3.20.0040.00420.35
8.3.10.0000.00822.09
8.3.00.0040.00422.39
8.2.180.0060.01216.88
8.2.170.0150.00022.96
8.2.160.0080.00620.89
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0050.00226.16
8.2.120.0040.00419.36
8.2.110.0060.00322.09
8.2.100.0040.00719.44
8.2.90.0060.00319.05
8.2.80.0080.00017.97
8.2.70.0030.00617.75
8.2.60.0040.00417.93
8.2.50.0080.00018.07
8.2.40.0000.00818.22
8.2.30.0040.00418.13
8.2.20.0070.00017.71
8.2.10.0000.00819.59
8.2.00.0000.00717.75
8.1.280.0120.00325.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.89
8.1.230.0090.00319.12
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0040.00417.53
8.1.180.0040.00418.67
8.1.170.0030.00518.50
8.1.160.0030.00621.92
8.1.150.0000.00818.51
8.1.140.0000.00717.27
8.1.130.0000.00717.79
8.1.120.0000.00817.41
8.1.110.0040.00417.29
8.1.100.0040.00417.39
8.1.90.0070.00017.30
8.1.80.0070.00017.30
8.1.70.0070.00017.36
8.1.60.0040.00417.42
8.1.50.0000.00717.59
8.1.40.0040.00417.55
8.1.30.0040.00417.63
8.1.20.0040.00417.68
8.1.10.0000.00717.51
8.1.00.0030.00517.56
8.0.300.0040.00418.77
8.0.290.0000.00717.05
8.0.280.0070.00018.35
8.0.270.0030.00517.27
8.0.260.0030.00316.89
8.0.250.0070.00016.98
8.0.240.0070.00016.98
8.0.230.0000.00716.97
8.0.220.0030.00316.87
8.0.210.0000.00816.86
8.0.200.0040.00416.85
8.0.190.0040.00416.90
8.0.180.0030.00516.95
8.0.170.0000.00716.89
8.0.160.0070.00017.02
8.0.150.0040.00416.92
8.0.140.0070.00016.90
8.0.130.0060.00013.34
8.0.120.0080.00016.91
8.0.110.0070.00016.86
8.0.100.0000.00717.01
8.0.90.0040.00416.79
8.0.80.0030.01116.84
8.0.70.0040.00416.85
8.0.60.0080.00016.73
8.0.50.0000.00816.76
8.0.30.0080.01317.21
8.0.20.0160.00717.40
8.0.10.0030.00516.91
8.0.00.0080.01116.72
7.4.330.0000.00615.08
7.4.320.0060.00016.38
7.4.300.0030.00316.44
7.4.290.0000.00816.44
7.4.280.0040.00416.55
7.4.270.0070.00016.46
7.4.260.0050.00316.43
7.4.250.0080.00016.55
7.4.240.0000.00716.44
7.4.230.0030.00316.50
7.4.220.0060.01216.55
7.4.210.0080.00616.52
7.4.200.0000.00716.35
7.4.190.0050.00216.31
7.4.160.0060.01516.58
7.4.150.0070.01117.40
7.4.140.0100.00717.86
7.4.130.0070.01116.51
7.4.120.0130.00516.37
7.4.110.0100.00716.55
7.4.100.0060.01516.45
7.4.90.0130.00716.43
7.4.80.0100.00719.39
7.4.70.0100.00716.50
7.4.60.0130.00616.51
7.4.50.0040.00416.60
7.4.40.0060.00922.77
7.4.30.0080.00816.52
7.4.00.0040.01214.89
7.3.330.0050.00013.16
7.3.320.0030.00313.15
7.3.310.0000.00716.26
7.3.300.0070.00016.14
7.3.290.0050.01016.43
7.3.280.0050.01116.33
7.3.270.0120.01217.40
7.3.260.0040.01616.57
7.3.250.0120.00516.54
7.3.240.0080.00816.44
7.3.230.0070.01016.48
7.3.210.0150.00316.37
7.3.200.0040.01219.39
7.3.190.0180.00416.57
7.3.180.0130.00316.50
7.3.170.0100.00616.59
7.3.160.0040.01216.36
7.3.120.0080.00315.09
7.2.330.0050.01416.59
7.2.320.0080.00816.78
7.2.310.0110.00616.64
7.2.300.0110.00816.61
7.2.290.0100.00616.74
7.2.80.0060.00316.71
7.2.00.0030.01019.18
7.1.200.0030.00315.66
7.1.100.0080.00317.86
7.1.70.0040.00417.13
7.1.60.0090.01619.82
7.1.50.0030.01716.94
7.1.00.0070.06722.33
7.0.200.0000.00716.70
7.0.140.0030.07322.18
7.0.60.0170.07320.02
7.0.50.0030.08717.89
7.0.40.0030.09320.24
7.0.30.0270.05320.30
7.0.20.0170.04720.13
7.0.10.0270.05720.17
7.0.00.0000.09020.13
5.6.280.0100.06721.06
5.6.210.0030.04020.69
5.6.200.0000.04318.16
5.6.190.0070.05020.43
5.6.180.4100.04720.49
5.6.170.0300.07720.48
5.6.160.0100.08320.63
5.6.150.0130.07718.12
5.6.140.0070.08318.19
5.6.130.0000.04718.18
5.6.120.0100.08321.09
5.6.110.0070.08321.14
5.6.100.0030.04320.95
5.6.90.0130.07720.91
5.6.80.0030.07020.47
5.6.70.0300.06320.36
5.5.350.0070.06020.32
5.5.340.0100.03717.88
5.5.330.0030.05320.40
5.5.320.0200.06320.21
5.5.310.0300.07320.30
5.5.300.0030.07317.96
5.5.290.0170.07317.92
5.5.280.0100.07720.86
5.5.270.0070.08020.75
5.5.260.0100.05320.76
5.5.250.0130.06720.79
5.5.240.0070.07020.18
5.4.450.0630.05019.11
5.4.440.0570.04719.10
5.4.430.0230.06319.45
5.4.420.0230.04319.46
5.4.410.0100.06019.19
5.4.400.0770.00018.75
5.4.390.1030.00018.80
5.4.380.0170.05018.45
5.4.370.0470.04318.65
5.4.360.0270.05718.70
5.4.350.0230.05018.68
5.4.340.0300.05718.71
5.4.320.0060.03612.45
5.4.310.0070.03712.45
5.4.300.0040.03812.46
5.4.290.0060.03712.45
5.4.280.0120.03012.35
5.4.270.0070.03412.35
5.4.260.0170.04318.74
5.4.250.0170.06718.69
5.4.240.0130.07018.85
5.4.230.0130.05018.95
5.4.220.0070.05718.99
5.4.210.0170.04318.79
5.4.200.0170.04718.86
5.4.190.0130.05318.76
5.4.180.0030.05718.99
5.4.170.0170.06318.76
5.4.160.0070.05318.85
5.4.150.0100.05018.72
5.4.140.0030.05716.50
5.4.130.0100.04716.51
5.4.120.0100.07016.27
5.4.110.0130.04316.34
5.4.100.0200.04016.49
5.4.90.0300.03016.31
5.4.80.0100.04716.34
5.4.70.0070.05016.38
5.4.60.0200.06316.43
5.4.50.0030.05016.36
5.4.40.0030.05716.52
5.4.30.0070.05016.14
5.4.20.0030.05316.28
5.4.10.0030.05716.43
5.4.00.0000.05315.86
5.3.290.0100.03912.80
5.3.280.0130.06314.61
5.3.270.0200.07314.61
5.3.260.0130.05714.45
5.3.250.0130.06014.47
5.3.240.0100.04714.62
5.3.230.0070.07314.61
5.3.220.0170.06014.36
5.3.210.0100.05714.26
5.3.200.0100.04714.27
5.3.190.0000.05714.57
5.3.180.0100.05714.57
5.3.170.0070.05314.57
5.3.160.0170.04014.34
5.3.150.0130.05014.48
5.3.140.0100.06714.44
5.3.130.0100.04714.56
5.3.120.0100.04714.24
5.3.110.0000.06014.41
5.3.100.0200.04713.96
5.3.90.0170.06313.86
5.3.80.0100.05014.04
5.3.70.0130.04313.87
5.3.60.0200.03714.01
5.3.50.0070.04714.04
5.3.40.0200.05014.04
5.3.30.0030.05013.95
5.3.20.0030.05013.84
5.3.10.0070.07013.56
5.3.00.0070.05013.68
5.2.170.0030.04711.14
5.2.160.0000.06311.14
5.2.150.0030.04011.14
5.2.140.0130.05311.14
5.2.130.0070.03711.11
5.2.120.0070.04311.11
5.2.110.0030.04311.10
5.2.100.0100.05310.87
5.2.90.0070.03711.01
5.2.80.0030.04311.08
5.2.70.0030.05010.97
5.2.60.0070.03711.07
5.2.50.0100.05311.17
5.2.40.0070.03710.93
5.2.30.0100.04010.80
5.2.20.0070.03710.98
5.2.10.0070.04710.84
5.2.00.0030.06010.89
5.1.60.0030.03310.23
5.1.50.0070.0439.91
5.1.40.0070.03310.06
5.1.30.0030.03710.41
5.1.20.0030.04010.43
5.1.10.0030.03710.07
5.1.00.0070.05010.25
5.0.50.0030.0308.53
5.0.40.0070.0278.40
5.0.30.0000.0438.20
5.0.20.0070.0338.15
5.0.10.0000.0308.26
5.0.00.0130.0338.16
4.4.90.0000.0235.90
4.4.80.0030.0205.90
4.4.70.0000.0305.90
4.4.60.0000.0235.90
4.4.50.0000.0235.90
4.4.40.0030.0335.90
4.4.30.0030.0205.90
4.4.20.0030.0205.90
4.4.10.0030.0205.98
4.4.00.0000.0375.90
4.3.110.0070.0175.85
4.3.100.0070.0235.82
4.3.90.0000.0235.83
4.3.80.0070.0335.79
4.3.70.0000.0235.77
4.3.60.0000.0235.75
4.3.50.0030.0205.87
4.3.40.0000.0475.72
4.3.30.0000.0235.72
4.3.20.0000.0235.72
4.3.10.0030.0205.72
4.3.00.0000.0237.46

preferences:
32.4 ms | 401 KiB | 5 Q