3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = NULL; if (is_null($x)) { echo "x is null\n"; } else { echo "x is not null\n"; } if (isset($x)) { echo "x is set\n"; } else { echo "x is not set\n"; } if (is_null($y)) { echo "y is null\n"; } else { echo "y is not null\n"; } if (isset($y)) { echo "y is set\n"; } else { echo "y is not set\n"; } if (compact('y') != array()) { echo "y is set to null"; }

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)
8.3.60.0120.00318.30
8.3.50.0070.00717.84
8.3.40.0110.00418.57
8.3.30.0060.00918.67
8.3.20.0060.00319.00
8.3.10.0040.00421.78
8.3.00.0000.00720.69
8.2.180.0150.00018.29
8.2.170.0110.00322.96
8.2.160.0060.00922.09
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00419.70
8.2.120.0080.00026.35
8.2.110.0060.00319.17
8.2.100.0000.01118.22
8.2.90.0040.00417.75
8.2.80.0060.00318.92
8.2.70.0000.00817.93
8.2.60.0040.00418.09
8.2.50.0040.00418.10
8.2.40.0030.00619.34
8.2.30.0000.00719.30
8.2.20.0040.00418.09
8.2.10.0030.00518.11
8.2.00.0000.00817.63
8.1.280.0070.00725.92
8.1.270.0000.00820.65
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0090.00020.39
8.1.230.0030.00718.83
8.1.220.0030.00517.74
8.1.210.0000.01018.77
8.1.200.0040.00417.35
8.1.190.0000.00817.22
8.1.180.0000.00818.10
8.1.170.0020.00518.46
8.1.160.0030.00518.88
8.1.150.0070.00018.92
8.1.140.0040.00322.19
8.1.130.0000.00720.25
8.1.120.0030.00317.45
8.1.110.0070.00017.46
8.1.100.0030.00517.44
8.1.90.0000.00817.40
8.1.80.0070.00017.43
8.1.70.0000.00717.35
8.1.60.0000.01117.46
8.1.50.0030.00517.49
8.1.40.0040.00417.49
8.1.30.0050.00317.56
8.1.20.0020.00517.49
8.1.10.0080.00017.40
8.1.00.0060.00317.37
8.0.300.0000.00818.77
8.0.290.0040.00416.75
8.0.280.0030.00318.43
8.0.270.0070.00017.18
8.0.260.0000.00618.35
8.0.250.0030.00416.88
8.0.240.0000.00717.03
8.0.230.0050.00216.90
8.0.220.0030.00316.84
8.0.210.0030.00616.83
8.0.200.0000.00716.89
8.0.190.0000.00717.04
8.0.180.0050.00216.85
8.0.170.0060.00316.85
8.0.160.0050.00216.95
8.0.150.0030.00316.86
8.0.140.0030.00316.91
8.0.130.0070.00013.41
8.0.120.0070.00016.96
8.0.110.0040.00416.82
8.0.100.0000.00816.88
8.0.90.0000.00817.05
8.0.80.0110.00716.94
8.0.70.0040.00416.96
8.0.60.0000.00816.93
8.0.50.0000.00816.76
8.0.30.0050.01217.10
8.0.20.0140.00617.40
8.0.10.0000.00716.86
8.0.00.0080.01016.79
7.4.330.0000.00515.55
7.4.320.0030.00316.48
7.4.300.0070.00016.48
7.4.290.0000.00716.60
7.4.280.0060.00316.50
7.4.270.0040.00416.51
7.4.260.0000.00716.41
7.4.250.0030.00316.53
7.4.240.0070.00016.42
7.4.230.0000.00716.49
7.4.220.0060.00316.42
7.4.210.0080.00716.50
7.4.200.0000.00716.49
7.4.160.0050.01216.62
7.4.140.0100.00817.86
7.4.130.0120.00616.44
7.4.120.0090.01016.54
7.4.110.0110.01216.52
7.4.100.0120.01216.37
7.4.90.0110.01116.50
7.4.80.0200.00319.39
7.4.70.0060.01216.51
7.4.60.0040.01216.48
7.4.50.0040.01116.57
7.4.40.0120.00416.50
7.4.10.0070.01315.07
7.4.00.0060.01214.93
7.3.330.0050.00012.93
7.3.320.0030.00313.16
7.3.310.0090.00016.21
7.3.300.0070.00016.21
7.3.290.0020.00516.27
7.3.280.0050.01216.23
7.3.260.0110.01016.38
7.3.240.0080.01016.39
7.3.230.0000.01716.33
7.3.210.0090.00916.38
7.3.200.0060.01616.29
7.3.190.0080.01116.33
7.3.180.0000.01616.47
7.3.170.0070.01416.40
7.3.160.0060.01016.31
7.3.130.0100.00714.86
7.3.120.0060.00914.95
7.3.110.0090.00914.66
7.3.100.0000.01514.77
7.3.90.0080.00814.70
7.3.80.0080.00414.71
7.3.70.0070.00714.84
7.3.60.0030.01014.82
7.3.50.0070.00414.54
7.3.40.0130.00314.44
7.3.30.0040.00714.75
7.3.20.0090.00316.56
7.3.10.0070.00716.29
7.3.00.0030.01016.54
7.2.330.0030.01616.52
7.2.320.0000.01816.58
7.2.310.0100.00716.69
7.2.300.0070.01016.67
7.2.290.0070.01016.40
7.2.260.0030.01614.65
7.2.250.0090.00914.86
7.2.240.0000.01714.97
7.2.230.0030.01314.87
7.2.220.0070.01315.08
7.2.210.0040.00715.10
7.2.200.0070.00715.01
7.2.190.0050.00814.98
7.2.180.0100.00314.82
7.2.170.0030.01314.89
7.2.160.0130.00314.52
7.2.150.0030.01217.02
7.2.140.0060.00917.07
7.2.130.0070.00716.87
7.2.120.0100.00316.66
7.2.110.0000.01216.79
7.2.100.0000.01516.58
7.2.90.0000.01217.08
7.2.80.0030.01416.79
7.2.70.0040.01116.68
7.2.60.0000.01316.67
7.2.50.0080.00416.81
7.2.40.0060.01217.00
7.2.30.0060.00316.70
7.2.20.0000.01416.88
7.2.10.0100.00016.88
7.2.00.0040.00816.93
7.1.330.0090.00915.64
7.1.320.0130.00615.84
7.1.310.0040.00715.53
7.1.300.0060.00915.93
7.1.290.0030.01115.84
7.1.280.0040.01115.80
7.1.270.0090.00015.83
7.1.260.0060.00615.53
7.1.250.0100.00315.79
7.1.240.0060.00915.59
7.1.230.0120.00315.72
7.1.220.0050.00515.83
7.1.210.0070.00715.53
7.1.200.0070.00415.52
7.1.190.0060.00315.70
7.1.180.0000.01215.72
7.1.170.0070.00715.59
7.1.160.0000.01315.77
7.1.150.0060.00615.45
7.1.140.0060.00915.91
7.1.130.0000.01615.70
7.1.120.0040.00715.70
7.1.110.0060.00315.52
7.1.100.0110.00415.77
7.1.90.0030.01015.75
7.1.80.0070.01015.86
7.1.70.0030.00915.84
7.1.60.0030.00915.67
7.1.50.0000.01015.52
7.1.40.0030.00915.55
7.1.30.0060.00615.70
7.1.20.0040.00415.89
7.1.10.0000.01315.76
7.1.00.0120.00315.48
7.0.330.0030.01215.31
7.0.320.0100.00015.13
7.0.310.0070.00715.53
7.0.300.0040.01115.43
7.0.290.0100.00615.41
7.0.280.0070.00715.43
7.0.270.0000.01515.53
7.0.260.0090.00615.17
7.0.250.0030.01215.35
7.0.240.0070.00415.19
7.0.230.0040.00815.27
7.0.220.0030.01015.44
7.0.210.0030.00915.47
7.0.200.0040.00715.48
7.0.190.0030.01015.38
7.0.180.0070.00715.49
7.0.170.0110.00315.39
7.0.160.0040.00415.54
7.0.150.0070.00715.44
7.0.140.0040.00715.45
7.0.130.0080.00615.43
7.0.120.0080.00315.44
7.0.110.0060.00615.38
7.0.100.0030.00715.47
7.0.90.0040.00415.34
7.0.80.0000.00815.39
7.0.70.0040.01115.37
7.0.60.0070.00715.48
7.0.50.0080.00615.34
7.0.40.0080.00613.70
7.0.30.0060.00613.52
7.0.20.0040.00813.43
7.0.10.0040.00713.24
7.0.00.0070.00313.46
5.6.400.0070.00714.09
5.6.390.0070.00414.28
5.6.380.0040.00914.50
5.6.370.0030.01014.55
5.6.360.0070.01113.97
5.6.350.0030.01014.14
5.6.340.0070.00414.25
5.6.330.0100.00613.90
5.6.320.0000.01514.07
5.6.310.0040.00714.23
5.6.300.0070.00713.84
5.6.290.0070.00714.34
5.6.280.0030.01014.31
5.6.270.0070.00714.42
5.6.260.0000.01414.19
5.6.250.0090.00314.60
5.6.240.0000.01514.35
5.6.230.0090.00614.46
5.6.220.0110.00014.17
5.6.210.0060.00614.43
5.6.200.0120.00314.18
5.6.190.0060.00614.18
5.6.180.0070.00714.18
5.6.170.0000.01314.20
5.6.160.0060.00614.54
5.6.150.0070.00714.29
5.6.140.0040.01114.46
5.6.130.0120.00314.09
5.6.120.0070.00714.30
5.6.110.0040.00714.37
5.6.100.0070.00314.21
5.6.90.0080.00314.51
5.6.80.0080.00614.48
5.6.70.0070.00414.38
5.6.60.0040.01114.18
5.6.50.0070.00714.53
5.6.40.0030.01214.41
5.6.30.0070.00714.45
5.6.20.0070.00714.02
5.6.10.0030.01014.07
5.6.00.0030.01414.27

preferences:
63.9 ms | 401 KiB | 5 Q