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['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)
8.3.60.0100.01018.12
8.3.50.0100.00822.05
8.3.40.0070.00719.02
8.3.30.0090.00618.80
8.3.20.0070.00020.29
8.3.10.0060.00321.93
8.3.00.0000.00822.46
8.2.180.0170.00316.88
8.2.170.0110.00422.96
8.2.160.0140.00020.99
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0040.00419.41
8.2.110.0000.00822.04
8.2.100.0080.00419.64
8.2.90.0040.00419.36
8.2.80.0050.00318.04
8.2.70.0050.00317.63
8.2.60.0080.00017.93
8.2.50.0050.00318.07
8.2.40.0040.00418.22
8.2.30.0040.00417.98
8.2.20.0050.00317.63
8.2.10.0000.00819.59
8.2.00.0040.00417.63
8.1.280.0040.01525.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0060.00323.73
8.1.230.0070.00419.05
8.1.220.0000.00917.74
8.1.210.0040.00418.77
8.1.200.0030.00717.23
8.1.190.0040.00417.50
8.1.180.0050.00318.66
8.1.170.0000.00918.50
8.1.160.0050.00221.87
8.1.150.0090.00018.50
8.1.140.0040.00417.46
8.1.130.0030.00317.76
8.1.120.0030.00317.33
8.1.110.0000.00817.38
8.1.100.0040.00417.28
8.1.90.0040.00417.40
8.1.80.0030.00317.37
8.1.70.0030.00317.38
8.1.60.0000.00917.41
8.1.50.0040.00417.52
8.1.40.0040.00417.47
8.1.30.0000.00817.61
8.1.20.0030.00617.57
8.1.10.0040.00417.65
8.1.00.0040.00417.45
8.0.300.0040.00418.77
8.0.290.0000.00717.05
8.0.280.0000.00718.52
8.0.270.0080.00017.14
8.0.260.0000.00716.95
8.0.250.0000.00616.97
8.0.240.0000.00716.98
8.0.230.0070.00016.96
8.0.220.0040.00416.86
8.0.210.0000.00716.77
8.0.200.0000.00716.88
8.0.190.0000.00716.99
8.0.180.0070.00016.91
8.0.170.0040.00416.79
8.0.160.0070.00016.79
8.0.150.0040.00416.86
8.0.140.0070.00016.86
8.0.130.0050.00013.37
8.0.120.0050.00316.88
8.0.110.0000.00716.91
8.0.100.0000.00716.87
8.0.90.0080.00016.88
8.0.80.0070.00716.81
8.0.70.0000.00816.93
8.0.60.0000.00716.96
8.0.50.0040.00416.90
8.0.30.0120.00717.09
8.0.20.0080.01017.40
8.0.10.0000.00816.98
8.0.00.0110.01116.74
7.4.330.0020.00215.00
7.4.320.0030.00316.35
7.4.300.0000.00616.52
7.4.290.0000.00716.43
7.4.280.0070.00016.49
7.4.270.0070.00016.38
7.4.260.0030.00516.54
7.4.250.0080.00016.55
7.4.240.0020.00616.53
7.4.230.0030.00416.46
7.4.220.0090.00916.57
7.4.210.0140.00416.54
7.4.200.0070.00016.45
7.4.190.0000.00716.35
7.4.160.0140.00516.46
7.4.150.0030.01417.40
7.4.140.0140.00517.86
7.4.130.0130.00416.61
7.4.120.0090.01216.48
7.4.110.0110.00516.55
7.4.100.0090.01316.45
7.4.90.0110.00816.45
7.4.80.0090.01219.39
7.4.70.0210.00316.59
7.4.60.0080.01116.51
7.4.50.0000.00816.18
7.4.40.0070.01122.77
7.4.30.0100.00616.43
7.4.00.0030.01314.70
7.3.330.0050.00013.20
7.3.320.0000.00513.07
7.3.310.0030.00316.18
7.3.300.0050.00216.34
7.3.290.0130.00316.32
7.3.280.0100.00616.32
7.3.270.0040.01917.40
7.3.260.0100.00716.55
7.3.250.0150.00616.53
7.3.240.0120.00616.51
7.3.230.0100.00716.47
7.3.210.0030.01316.32
7.3.200.0070.01119.39
7.3.190.0090.00916.52
7.3.180.0100.00616.32
7.3.170.0130.00316.48
7.3.160.0050.01116.50
7.3.120.0060.01214.51
7.3.10.0030.01116.35
7.3.00.0040.00916.40
7.2.330.0100.01016.82
7.2.320.0120.00416.63
7.2.310.0120.00416.44
7.2.300.0130.01016.65
7.2.290.0060.00916.61
7.2.130.0050.00916.79
7.2.120.0010.01416.71
7.2.110.0100.00516.92
7.2.100.0060.01016.90
7.2.90.0080.00616.84
7.2.80.0090.00616.80
7.2.70.0020.01216.87
7.2.60.0070.00716.89
7.2.50.0030.01316.71
7.2.40.0090.00916.91
7.2.30.0100.00916.87
7.2.20.0090.01016.63
7.2.10.0070.01016.75
7.2.00.0060.00917.74
7.1.250.0030.00815.75
7.1.200.0000.01415.66
7.1.100.0060.00318.30
7.1.70.0000.00917.16
7.1.60.0030.01319.82
7.1.50.0060.01516.63
7.1.00.0100.07022.27
7.0.200.0000.00716.57
7.0.140.0030.07321.93
7.0.60.0000.09319.91
7.0.50.0100.08017.91
7.0.40.0170.07020.23
7.0.30.0530.06720.13
7.0.20.0230.05020.09
7.0.10.0030.07720.01
7.0.00.0130.07319.99
5.6.280.0000.07721.09
5.6.210.0130.08320.71
5.6.200.0070.06718.08
5.6.190.0070.07720.33
5.6.180.0200.04020.77
5.6.170.0130.04320.33
5.6.160.0070.04320.52
5.6.150.0030.04018.13
5.6.140.0130.07718.12
5.6.130.0100.06718.15
5.6.120.0170.06320.97
5.6.110.0070.06321.01
5.6.100.0000.04720.88
5.6.90.0100.04020.95
5.6.80.0130.07720.53
5.6.70.4670.03720.37
5.5.350.0030.09320.33
5.5.340.0000.07018.02
5.5.330.0100.07720.28
5.5.320.0330.06720.29
5.5.310.0170.04720.41
5.5.300.0070.07717.97
5.5.290.0070.07717.91
5.5.280.0070.05320.85
5.5.270.0030.05320.88
5.5.260.0070.06320.83
5.5.250.0100.08020.78
5.5.240.0070.07720.11
5.4.450.0130.06019.61
5.4.440.0630.05719.24
5.4.430.0100.05719.32
5.4.420.0200.04719.30
5.4.410.0170.05719.24
5.4.400.1070.00018.74
5.4.390.0870.00018.77
5.4.380.0270.05318.74
5.4.370.0130.05318.56
5.4.360.0200.04318.74
5.4.350.0200.05718.71
5.4.340.0200.05718.63
5.4.320.0080.03312.45
5.4.310.0050.03812.46
5.4.300.0060.03512.45
5.4.290.0100.04312.45
5.4.280.0050.03612.35
5.4.270.0070.03812.35
5.4.260.0200.04318.71
5.4.250.0100.05018.84
5.4.240.0070.05718.99
5.4.230.0170.05319.00
5.4.220.0070.06018.90
5.4.210.0200.04718.99
5.4.200.0000.07018.66
5.4.190.0030.05718.69
5.4.180.0100.06718.86
5.4.170.0000.08318.70
5.4.160.0070.07718.70
5.4.150.0100.05318.98
5.4.140.0000.06016.48
5.4.130.0030.05316.25
5.4.120.0170.05316.25
5.4.110.0030.05316.49
5.4.100.0070.05316.45
5.4.90.0100.04716.41
5.4.80.0030.05016.15
5.4.70.0070.07316.24
5.4.60.0100.05316.29
5.4.50.0070.04716.39
5.4.40.0100.06316.34
5.4.30.0030.07316.36
5.4.20.0030.05716.19
5.4.10.0170.04716.45
5.4.00.0100.04315.73
5.3.290.0060.03912.80
5.3.280.0100.05014.74
5.3.270.0100.04714.49
5.3.260.0170.04014.30
5.3.250.0070.05014.47
5.3.240.0030.05314.62
5.3.230.0170.05014.47
5.3.220.0070.05014.48
5.3.210.0070.05314.43
5.3.200.0070.05014.58
5.3.190.0130.04714.61
5.3.180.0100.04714.40
5.3.170.0070.05014.58
5.3.160.0130.04714.57
5.3.150.0200.06714.34
5.3.140.0170.05014.57
5.3.130.0100.05014.54
5.3.120.0000.08014.56
5.3.110.0130.05014.32
5.3.100.0030.05313.96
5.3.90.0070.05014.02
5.3.80.0000.06013.79
5.3.70.0030.05313.79
5.3.60.0130.04313.93
5.3.50.0030.05313.95
5.3.40.0270.05013.84
5.3.30.0070.07013.85
5.3.20.0130.05013.73
5.3.10.0030.05313.48
5.3.00.0030.07313.41
5.2.170.0000.05311.24
5.2.160.0100.04311.15
5.2.150.0100.04011.09
5.2.140.0000.04311.07
5.2.130.0070.03711.01
5.2.120.0030.04010.86
5.2.110.0070.04011.11
5.2.100.0000.05011.19
5.2.90.0070.03710.93
5.2.80.0100.03711.09
5.2.70.0100.03711.02
5.2.60.0000.04710.98
5.2.50.0130.04310.91
5.2.40.0100.03710.98
5.2.30.0100.04711.12
5.2.20.0100.05010.97
5.2.10.0100.05010.91
5.2.00.0100.05010.70
5.1.60.0070.0479.94
5.1.50.0100.0409.83
5.1.40.0070.03310.02
5.1.30.0130.03710.41
5.1.20.0070.03310.57
5.1.10.0030.0479.89
5.1.00.0000.04010.03
5.0.50.0070.0278.49
5.0.40.0000.0308.38
5.0.30.0070.0408.17
5.0.20.0000.0308.15
5.0.10.0100.0378.15
5.0.00.0100.0508.21
4.4.90.0030.0235.80
4.4.80.0000.0275.91
4.4.70.0070.0175.80
4.4.60.0000.0235.98
4.4.50.0000.0235.98
4.4.40.0070.0375.78
4.4.30.0000.0305.89
4.4.20.0030.0235.83
4.4.10.0030.0235.88
4.4.00.0000.0375.89
4.3.110.0030.0205.71
4.3.100.0030.0305.71
4.3.90.0030.0205.80
4.3.80.0000.0336.96
4.3.70.0030.0276.96
4.3.60.0000.0236.96
4.3.50.0070.0206.96
4.3.40.0070.0306.96
4.3.30.0030.0276.96
4.3.20.0030.0306.96
4.3.10.0000.0236.96
4.3.00.0100.0237.46

preferences:
35.58 ms | 401 KiB | 5 Q