3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); $a['x'] = 1; if ( !empty($a['y']) ) { echo 'not empty'; } else { echo 'empty'; }

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)
8.3.40.0040.01118.88
8.3.30.0130.00019.22
8.3.20.0050.00320.13
8.3.10.0080.00022.04
8.3.00.0040.00422.40
8.2.170.0070.01422.96
8.2.160.0110.00420.39
8.2.150.0040.00424.18
8.2.140.0090.00024.66
8.2.130.0090.00026.16
8.2.120.0040.00419.48
8.2.110.0050.00322.10
8.2.100.0040.00719.64
8.2.90.0030.00619.35
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0030.00617.92
8.2.50.0080.00018.07
8.2.40.0040.00418.16
8.2.30.0030.00518.00
8.2.20.0000.00717.78
8.2.10.0040.00419.41
8.2.00.0000.00717.75
8.1.270.0040.00422.24
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0030.00623.74
8.1.230.0090.00319.14
8.1.220.0000.00817.79
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0050.00317.53
8.1.180.0060.00318.10
8.1.170.0030.00618.50
8.1.160.0040.00421.88
8.1.150.0000.00818.75
8.1.140.0040.00417.50
8.1.130.0030.00317.83
8.1.120.0070.00017.43
8.1.110.0050.00217.46
8.1.100.0070.00017.45
8.1.90.0080.00017.45
8.1.80.0040.00417.33
8.1.70.0000.00717.38
8.1.60.0030.00617.55
8.1.50.0040.00417.48
8.1.40.0070.00017.44
8.1.30.0040.00417.59
8.1.20.0000.00817.71
8.1.10.0030.00617.60
8.1.00.0030.00617.34
8.0.300.0000.00718.77
8.0.290.0000.00717.18
8.0.280.0070.00018.45
8.0.270.0030.00317.28
8.0.260.0000.00618.36
8.0.250.0000.00716.97
8.0.240.0000.00716.84
8.0.230.0000.00716.85
8.0.220.0030.00316.82
8.0.210.0050.00216.91
8.0.200.0040.00416.97
8.0.190.0050.00316.91
8.0.180.0000.00716.88
8.0.170.0000.00816.94
8.0.160.0000.00816.86
8.0.150.0050.00216.92
8.0.140.0040.00416.87
8.0.130.0070.00013.32
8.0.120.0080.00016.80
8.0.110.0040.00416.84
8.0.100.0000.00716.79
8.0.90.0030.00316.92
8.0.80.0130.00316.87
8.0.70.0000.00716.95
8.0.60.0000.00816.91
8.0.50.0050.00316.68
8.0.30.0060.01217.05
8.0.20.0140.00717.40
8.0.10.0040.00417.12
8.0.00.0120.00616.77
7.4.330.0060.00015.00
7.4.320.0030.00316.52
7.4.300.0060.00016.49
7.4.290.0060.00316.61
7.4.280.0030.00316.49
7.4.270.0030.00316.58
7.4.260.0040.00416.58
7.4.250.0000.00816.51
7.4.240.0030.00516.47
7.4.230.0070.00016.35
7.4.220.0070.01016.57
7.4.210.0060.00916.47
7.4.200.0000.00716.49
7.4.190.0070.00016.50
7.4.160.0060.01416.32
7.4.150.0040.02017.40
7.4.140.0130.01117.86
7.4.130.0110.00716.61
7.4.120.0110.01016.56
7.4.110.0080.00816.57
7.4.100.0140.00616.46
7.4.90.0070.01016.51
7.4.80.0140.00419.39
7.4.70.0080.00816.42
7.4.60.0080.00816.43
7.4.50.0040.00416.39
7.4.40.0080.00322.77
7.4.30.0040.01216.43
7.4.00.0070.01114.89
7.3.330.0000.00613.17
7.3.320.0000.00613.00
7.3.310.0000.00716.20
7.3.300.0030.00316.07
7.3.290.0060.00916.30
7.3.280.0080.00816.29
7.3.270.0120.01217.40
7.3.260.0070.01016.50
7.3.250.0070.01216.27
7.3.240.0030.01416.63
7.3.230.0060.01016.39
7.3.210.0050.01116.50
7.3.200.0060.01019.39
7.3.190.0080.01416.34
7.3.180.0080.00816.21
7.3.170.0100.00716.30
7.3.160.0000.01516.46
7.3.120.0060.00914.86
7.2.330.0090.00916.75
7.2.320.0090.00916.55
7.2.310.0170.00016.37
7.2.300.0060.01216.45
7.2.290.0130.00316.56
7.2.00.0030.00919.16
7.1.100.0000.01317.91
7.1.70.0030.00616.90
7.1.60.0110.01419.82
7.1.50.0060.00616.77
7.1.00.0070.07322.43
7.0.200.0040.00416.67
7.0.140.0000.07321.97
7.0.100.0230.07019.96
7.0.90.0230.05319.93
7.0.80.0200.04019.92
7.0.70.0100.08019.94
7.0.60.0100.08020.07
7.0.50.0070.08320.25
7.0.40.0030.05720.19
7.0.30.0030.08320.13
7.0.20.0130.08320.19
7.0.10.0100.08720.18
7.0.00.0000.08320.06
5.6.280.0100.06721.07
5.6.250.0070.07720.59
5.6.240.0070.08320.50
5.6.230.0070.07720.59
5.6.220.0130.08020.58
5.6.210.0130.04020.65
5.6.200.0070.05721.05
5.6.190.0170.06321.04
5.6.180.0000.09021.06
5.6.170.0130.07321.07
5.6.160.0130.07021.12
5.6.150.0070.05020.96
5.6.140.0030.08321.00
5.6.130.0130.08021.04
5.6.120.0100.08021.04
5.6.110.0070.08320.93
5.6.100.0070.05021.12
5.6.90.0070.07021.05
5.6.80.0130.06720.49
5.6.70.0070.06320.40
5.6.60.0170.03720.45
5.6.50.0200.07020.49
5.6.40.0030.08020.40
5.6.30.0030.05720.36
5.6.20.0130.07020.43
5.6.10.0030.07720.40
5.6.00.0030.08320.42
5.5.380.0100.07020.39
5.5.370.0170.04320.34
5.5.360.0030.05720.33
5.5.350.0100.08020.47
5.5.340.0030.08320.80
5.5.330.0030.07320.83
5.5.320.0070.07020.73
5.5.310.0100.07020.91
5.5.300.0100.07720.90
5.5.290.0100.04320.73
5.5.280.0100.08020.78
5.5.270.0170.07020.79
5.5.260.0030.05320.83
5.5.250.0070.08320.69
5.5.240.0100.07320.21
5.5.230.0000.09320.29
5.5.220.0100.07320.23
5.5.210.0070.05020.29
5.5.200.0070.07020.13
5.5.190.0070.08320.12
5.5.180.0070.08020.24
5.5.160.0070.07720.11
5.5.150.0070.07020.09
5.5.140.0070.08320.25
5.5.130.0130.03720.23
5.5.120.0030.07720.19
5.5.110.0070.07720.24
5.5.100.0130.07720.16
5.5.90.0030.08020.07
5.5.80.0070.06020.14
5.5.70.0130.07320.05
5.5.60.0100.04019.94
5.5.50.0030.07320.04
5.5.40.0070.07720.03
5.5.30.0130.07020.12
5.5.20.0170.06720.13
5.5.10.0070.08020.04
5.5.00.0170.07020.01
5.4.450.0100.07719.12
5.4.440.0170.07019.40
5.4.430.0070.05019.35
5.4.420.0030.08019.42
5.4.410.0030.08019.15
5.4.400.0030.08019.11
5.4.390.0170.03319.06
5.4.380.0130.05019.12
5.4.370.0100.06318.96
5.4.360.0070.07319.04
5.4.350.0000.07018.82
5.4.340.0100.07319.06
5.4.320.0070.08019.10
5.4.310.0070.07719.03
5.4.300.0030.08018.96
5.4.290.0000.07718.81
5.4.280.0100.04019.10
5.4.270.0130.06718.79
5.4.260.0100.07019.16
5.4.250.0030.07719.09
5.4.240.0030.07319.05
5.4.230.0070.07719.07
5.4.220.0100.07319.13
5.4.210.0130.03719.11
5.4.200.0000.08019.07
5.4.190.0070.08018.95
5.4.180.0100.07319.02
5.4.170.0200.06319.06
5.4.160.0100.07019.13
5.4.150.0070.04318.96
5.4.140.0100.07716.22
5.4.130.0070.06316.22
5.4.120.0130.06716.21
5.4.110.0070.07316.23
5.4.100.0030.07016.24
5.4.90.0030.05716.45
5.4.80.0100.03716.42
5.4.70.0000.06316.25
5.4.60.0070.07316.23
5.4.50.0100.07316.36
5.4.40.0070.07716.24
5.4.30.0030.06016.27
5.4.20.0030.05016.41
5.4.10.0070.04316.20
5.4.00.0030.03715.77
5.3.290.0070.07014.61
5.3.280.0070.08014.57
5.3.270.0170.06714.56
5.3.260.0000.07314.42
5.3.250.0100.07314.57
5.3.240.0030.04314.46
5.3.230.0070.07314.45
5.3.220.0030.07314.51
5.3.210.0070.08014.50
5.3.200.0200.05314.42
5.3.190.0100.07714.55
5.3.180.0030.07714.51
5.3.170.0100.07314.57
5.3.160.0100.07314.43
5.3.150.0030.07314.42
5.3.140.0130.03014.57
5.3.130.0070.06714.52
5.3.120.0030.05314.37
5.3.110.0000.05314.46
5.3.100.0030.04014.03
5.3.90.0030.04013.86
5.3.80.0030.03713.99
5.3.70.0100.03014.00
5.3.60.0070.03713.99
5.3.50.0000.04313.90
5.3.40.0030.03713.85
5.3.30.0100.05713.66
5.3.20.0030.04013.54
5.3.10.0030.03713.59
5.3.00.0030.03313.55
5.2.170.0000.03311.11
5.2.160.0000.03011.14
5.2.150.0000.03311.00
5.2.140.0070.03311.13
5.2.130.0000.02710.95
5.2.120.0070.03010.89
5.2.110.0070.02710.89
5.2.100.0000.03011.01
5.2.90.0070.02311.10
5.2.80.0070.07310.96
5.2.70.0030.03711.09
5.2.60.0070.02310.91
5.2.50.0070.05711.00
5.2.40.0100.05310.84
5.2.30.0070.04710.80
5.2.20.0000.05310.88
5.2.10.0070.03010.89
5.2.00.0000.03010.80
5.1.60.0000.04010.80
5.1.50.0000.03710.80
5.1.40.0000.02710.80
5.1.30.0000.02710.80
5.1.20.0070.02310.80
5.1.10.0070.02310.80
5.1.00.0070.02010.80
5.0.50.0030.02010.80
5.0.40.0000.02310.80
5.0.30.0130.02310.80
5.0.20.0070.01710.80
5.0.10.0000.02010.80
5.0.00.0030.02710.80
4.4.90.0000.01710.80
4.4.80.0030.03010.80
4.4.70.0000.03010.80
4.4.60.0030.03310.80
4.4.50.0000.01710.80
4.4.40.0030.02710.80
4.4.30.0000.01710.80
4.4.20.0000.01710.80
4.4.10.0030.01310.80
4.4.00.0000.03310.80
4.3.110.0000.01710.80
4.3.100.0030.01310.80
4.3.90.0000.01710.80
4.3.80.0000.02310.80
4.3.70.0000.01710.80
4.3.60.0070.01010.80
4.3.50.0030.01310.80
4.3.40.0000.02310.80
4.3.30.0000.01710.80
4.3.20.0000.01710.80
4.3.10.0000.02010.80
4.3.00.0000.01710.80

preferences:
42.93 ms | 400 KiB | 5 Q