3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { function __isset($x) { echo '__isset: ', $x; return rand(); } } $a = new A; echo empty($a);

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)
7.4.00.0090.00914.86
7.3.120.0080.00914.56
7.3.110.0040.01414.69
7.3.100.0060.01014.73
7.3.90.0050.00914.72
7.3.80.0040.01114.87
7.3.70.0020.01014.70
7.3.60.0040.00714.53
7.3.50.0070.00714.76
7.3.40.0050.00814.69
7.3.30.0050.00714.81
7.3.20.0070.00516.40
7.3.10.0030.01216.35
7.3.00.0110.00516.45
7.2.250.0090.00715.02
7.2.240.0140.00015.07
7.2.230.0060.01014.98
7.2.220.0030.01014.97
7.2.210.0030.00914.98
7.2.200.0050.01014.90
7.2.190.0050.00715.05
7.2.180.0060.01114.97
7.2.170.0080.00714.99
7.1.330.0050.01015.70
7.1.320.0070.00515.60
7.1.310.0090.00415.44
7.1.300.0020.01215.61
7.1.290.0030.01215.65
7.1.280.0040.00715.59
7.1.270.0040.00715.52
7.1.260.0040.00915.54
7.1.70.0000.00817.08
7.1.60.0070.01719.40
7.1.50.0040.01216.61
7.1.00.0000.06322.44
7.0.200.0040.00416.49
7.0.140.0070.07021.95
7.0.70.0130.05321.80
7.0.60.0000.07721.75
7.0.50.0100.07321.96
7.0.40.0030.04020.14
7.0.30.0070.07720.14
7.0.20.0000.08720.03
7.0.10.0070.08720.13
7.0.00.0100.07720.16
5.6.280.0030.07321.11
5.6.220.0200.07320.58
5.6.210.0100.07720.49
5.6.200.0070.06021.18
5.6.190.0030.08721.04
5.6.180.0030.08320.96
5.6.170.0070.08321.11
5.6.160.0200.07021.02
5.6.150.0030.07321.16
5.6.140.0000.07321.07
5.6.130.0030.09021.07
5.6.120.0070.05721.08
5.6.110.0030.08321.03
5.6.100.0070.08021.02
5.6.90.0000.07020.99
5.6.80.0030.06320.40
5.6.70.0070.07320.44
5.6.60.0000.07720.45
5.6.50.0100.07720.31
5.6.40.0000.08020.30
5.6.30.0100.07720.32
5.6.20.0030.05320.43
5.6.10.0100.05020.41
5.6.00.0030.04320.30
5.5.360.0000.06320.45
5.5.350.0030.09320.33
5.5.340.0070.05020.86
5.5.330.0000.05720.87
5.5.320.0070.08320.93
5.5.310.0100.07320.73
5.5.300.0070.07720.88
5.5.290.0030.07020.82
5.5.280.0070.08020.92
5.5.270.0000.06720.75
5.5.260.0130.07720.75
5.5.250.0070.05720.64
5.5.240.0100.07320.21
5.5.230.0070.07720.15
5.5.220.0100.05320.29
5.5.210.0030.07720.26
5.5.200.0100.07020.28
5.5.190.0030.06320.21
5.5.180.0030.08320.23
5.5.160.0030.04720.18
5.5.150.0070.05020.19
5.5.140.0000.04320.21
5.5.130.0000.08319.99
5.5.120.0000.08020.11
5.5.110.0030.08320.20
5.5.100.0070.06019.96
5.5.90.0030.07720.09
5.5.80.0000.08320.01
5.5.70.0030.07020.12
5.5.60.0030.07320.15
5.5.50.0030.08020.16
5.5.40.0030.05720.11
5.5.30.0070.04020.06
5.5.20.0000.04720.11
5.5.10.0070.08020.12
5.5.00.0000.06020.11
5.4.450.0000.05719.46
5.4.440.0030.07719.45
5.4.430.0130.04019.50
5.4.420.0130.06719.53
5.4.410.0030.08019.38
5.4.400.0030.07019.13
5.4.390.0030.07018.91
5.4.380.0000.08019.11
5.4.370.0070.07319.13
5.4.360.0070.07318.95
5.4.350.0070.07319.18
5.4.340.0030.06019.13
5.4.320.0070.03719.05
5.4.310.0000.06719.04
5.4.300.0000.07019.04
5.4.290.0070.07719.18
5.4.280.0030.08019.15
5.4.270.0170.06019.12
5.4.260.0070.05318.87
5.4.250.0030.08019.02
5.4.240.0070.04719.09
5.4.230.0030.07019.19
5.4.220.0070.05719.17
5.4.210.0100.05318.94
5.4.200.0070.05319.20
5.4.190.0070.07718.84
5.4.180.0070.05018.88
5.4.170.0030.08019.16
5.4.160.0000.06318.93
5.4.150.0070.08019.16
5.4.140.0000.08016.33
5.4.130.0030.07316.40
5.4.120.0000.07316.42
5.4.110.0030.06316.27
5.4.100.0070.06716.42
5.4.90.0170.05716.39
5.4.80.0030.08016.50
5.4.70.0030.07016.49
5.4.60.0100.07016.42
5.4.50.0030.04716.47
5.4.40.0030.05016.45
5.4.30.0030.04716.47
5.4.20.0070.04716.43
5.4.10.0070.05016.36
5.4.00.0070.03715.88
5.3.290.0030.04314.80
5.3.280.0030.04714.56
5.3.270.0030.06714.60
5.3.260.0070.04314.71
5.3.250.0000.05014.71
5.3.240.0030.04314.63
5.3.230.0030.05014.58
5.3.220.0030.05714.59
5.3.210.0100.06714.65
5.3.200.0030.07714.64
5.3.190.0070.05014.62
5.3.180.0000.08314.49
5.3.170.0070.07014.59
5.3.160.0000.08014.59
5.3.150.0030.05714.58
5.3.140.0030.06714.56
5.3.130.0100.06714.51
5.3.120.0030.06714.52
5.3.110.0070.04314.56
5.3.100.0070.07014.09
5.3.90.0030.07014.12
5.3.80.0030.07714.02
5.3.70.0030.07713.99
5.3.60.0000.07313.99
5.3.50.0030.06713.97
5.3.40.0030.07713.86
5.3.30.0030.07313.82
5.3.20.0000.05013.75
5.3.10.0030.04713.77
5.3.00.0070.07013.59
5.2.170.0030.06012.20
5.2.160.0000.06312.20
5.2.150.0000.04712.20
5.2.140.0070.04712.20
5.2.130.0030.03712.20
5.2.120.0130.05012.20
5.2.110.0000.06312.20
5.2.100.0030.06012.20
5.2.90.0100.05312.20
5.2.80.0000.06312.20
5.2.70.0000.07012.20
5.2.60.0070.06012.20
5.2.50.0000.06712.20
5.2.40.0100.04712.20
5.2.30.0030.05712.20
5.2.20.0030.07012.20
5.2.10.0030.06012.20
5.2.00.0030.06012.20
5.1.60.0030.05312.20
5.1.50.0030.03012.20
5.1.40.0000.03012.20
5.1.30.0000.06012.20
5.1.20.0030.05012.20
5.1.10.0030.05712.20
5.1.00.0000.04312.20
5.0.50.0030.04712.20
5.0.40.0000.04012.20
5.0.30.0070.06312.20
5.0.20.0030.02312.20
5.0.10.0030.04312.20
5.0.00.0030.06312.20
4.4.90.0000.03012.20
4.4.80.0030.02712.20
4.4.70.0100.03012.20
4.4.60.0000.03012.20
4.4.50.0030.03312.20
4.4.40.0030.04012.20
4.4.30.0030.01312.20
4.4.20.0030.03012.20
4.4.10.0000.02012.20
4.4.00.0000.04312.20
4.3.110.0030.03312.20
4.3.100.0000.03012.20
4.3.90.0000.03312.20
4.3.80.0000.04712.20
4.3.70.0030.03312.20
4.3.60.0030.03012.20
4.3.50.0000.03312.20
4.3.40.0000.03712.20
4.3.30.0000.01712.20
4.3.20.0070.02012.20
4.3.10.0030.01312.20
4.3.00.0000.01712.20

preferences:
56.06 ms | 401 KiB | 5 Q