3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( 'one' => 1, 'two' => 2, 'three' => '0', 'four' => null ); var_dump(isset($a['three'])); var_dump(empty($a['three'])); var_dump(isset($a['four'])); var_dump(isset($a['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)
8.3.60.0110.00418.43
8.3.50.0130.00721.94
8.3.40.0040.01118.45
8.3.30.0100.00319.09
8.3.20.0040.00420.16
8.3.10.0080.00023.67
8.3.00.0040.00420.55
8.2.180.0100.00616.32
8.2.170.0100.00322.96
8.2.160.0100.00322.23
8.2.150.0080.00024.18
8.2.140.0070.00724.66
8.2.130.0040.00426.16
8.2.120.0080.00020.88
8.2.110.0080.00022.24
8.2.100.0090.00317.59
8.2.90.0070.00019.04
8.2.80.0000.00818.04
8.2.70.0040.00417.50
8.2.60.0000.00817.68
8.2.50.0040.00418.07
8.2.40.0040.00418.09
8.2.30.0070.00017.97
8.2.20.0000.00717.76
8.2.10.0040.00419.41
8.2.00.0000.00717.65
8.1.280.0110.00425.92
8.1.270.0060.00323.76
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0080.00023.71
8.1.230.0070.00419.16
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0060.00317.23
8.1.190.0040.00417.39
8.1.180.0040.00418.10
8.1.170.0030.00518.57
8.1.160.0040.00421.95
8.1.150.0050.00218.60
8.1.140.0000.00817.34
8.1.130.0030.00317.75
8.1.120.0000.00717.41
8.1.110.0000.00817.40
8.1.100.0070.00017.45
8.1.90.0040.00417.43
8.1.80.0030.00417.30
8.1.70.0030.00317.38
8.1.60.0030.00617.56
8.1.50.0030.00517.46
8.1.40.0040.00417.46
8.1.30.0000.00817.59
8.1.20.0000.00717.48
8.1.10.0050.00317.41
8.1.00.0000.00817.45
8.0.300.0070.00018.77
8.0.290.0040.00417.00
8.0.280.0070.00018.25
8.0.270.0070.00017.19
8.0.260.0030.00316.69
8.0.250.0000.00716.79
8.0.240.0040.00416.94
8.0.230.0070.00016.78
8.0.220.0070.00016.73
8.0.210.0030.00316.85
8.0.200.0040.00416.90
8.0.190.0000.00716.92
8.0.180.0000.00716.88
8.0.170.0070.00016.86
8.0.160.0000.00716.89
8.0.150.0030.00316.73
8.0.140.0080.00016.81
8.0.130.0030.00313.28
8.0.120.0040.00416.82
8.0.110.0030.00316.80
8.0.100.0060.00316.81
8.0.90.0000.00716.89
8.0.80.0110.00916.89
8.0.70.0030.00516.87
8.0.60.0040.00416.84
8.0.50.0000.00716.64
8.0.30.0130.00717.12
8.0.20.0140.00517.40
8.0.10.0050.00316.96
8.0.00.0090.00816.74
7.4.330.0050.00015.04
7.4.320.0000.00616.39
7.4.300.0000.00616.54
7.4.290.0080.00016.49
7.4.280.0040.00416.34
7.4.270.0030.00316.54
7.4.260.0040.00416.43
7.4.250.0040.00416.33
7.4.240.0050.00316.53
7.4.230.0070.00016.54
7.4.220.0070.01316.52
7.4.210.0120.00716.44
7.4.200.0070.00016.34
7.4.190.0030.00316.40
7.4.160.0060.01316.52
7.4.150.0100.00617.40
7.4.140.0080.01317.86
7.4.130.0090.00916.46
7.4.120.0090.00816.47
7.4.110.0150.00416.52
7.4.100.0040.01216.54
7.4.90.0100.01016.58
7.4.80.0130.00316.48
7.4.70.0110.00616.47
7.4.60.0040.01216.15
7.4.50.0050.00316.29
7.4.40.0100.00622.77
7.4.30.0060.01516.38
7.4.00.0060.01015.08
7.3.330.0030.00313.03
7.3.320.0000.00512.92
7.3.310.0080.00016.16
7.3.300.0030.00316.19
7.3.290.0030.01316.30
7.3.280.0080.00716.20
7.3.270.0110.00717.40
7.3.260.0150.00916.48
7.3.250.0050.01616.30
7.3.240.0120.00716.17
7.3.230.0170.00016.40
7.3.210.0080.00816.60
7.3.200.0130.01019.39
7.3.190.0170.00016.05
7.3.180.0000.01516.49
7.3.170.0120.00316.27
7.3.160.0000.01716.19
7.3.120.0080.00814.61
7.3.00.0100.00616.44
7.2.330.0110.00716.41
7.2.320.0060.01316.33
7.2.310.0000.01616.66
7.2.300.0060.01016.30
7.2.290.0090.00616.57
7.2.130.0090.00416.52
7.2.120.0160.00516.73
7.2.110.0090.00916.51
7.2.100.0080.00816.46
7.2.90.0080.00816.59
7.2.80.0100.00616.61
7.2.70.0060.01016.63
7.2.60.0100.01016.62
7.2.50.0090.00316.54
7.2.40.0060.00916.75
7.2.30.0110.00716.51
7.2.20.0060.00916.60
7.2.10.0090.00616.72
7.2.00.0110.01017.89
7.1.250.0090.00615.21
7.1.240.0060.00915.65
7.1.230.0140.00315.63
7.1.220.0090.00615.31
7.1.210.0110.00415.48
7.1.200.0130.00315.41
7.1.190.0090.00615.25
7.1.180.0030.00715.65
7.1.170.0030.01215.33
7.1.160.0070.00715.37
7.1.150.0090.00615.43
7.1.140.0100.00315.53
7.1.130.0070.00415.49
7.1.120.0090.00615.71
7.1.110.0090.00915.68
7.1.100.0090.00616.68
7.1.90.0070.01015.51
7.1.80.0130.00615.76
7.1.70.0050.00716.36
7.1.60.0080.01217.44
7.1.50.0100.00516.09
7.1.40.0070.00715.51
7.1.30.0160.00015.43
7.1.20.0110.00915.59
7.1.10.0120.01215.80
7.1.00.0100.03819.05
7.0.330.0090.00515.21
7.0.320.0070.00714.99
7.0.310.0100.00715.20
7.0.300.0040.00715.29
7.0.290.0100.00615.07
7.0.280.0060.00715.15
7.0.270.0040.00915.05
7.0.260.0070.00315.09
7.0.250.0110.00715.16
7.0.240.0090.00314.80
7.0.230.0030.01015.19
7.0.220.0090.00615.11
7.0.210.0100.00714.99
7.0.200.0050.00815.82
7.0.190.0060.01214.90
7.0.180.0110.00615.21
7.0.170.0130.00315.31
7.0.160.0120.01015.23
7.0.150.0140.00415.38
7.0.140.0110.04218.65
7.0.130.0130.00715.35
7.0.120.0070.01115.06
7.0.110.0110.00615.03
7.0.100.0120.02917.63
7.0.90.0120.04517.55
7.0.80.0060.04817.51
7.0.70.0130.03417.58
7.0.60.0160.04617.57
7.0.50.0170.04517.73
7.0.40.0080.04416.65
7.0.30.0130.02516.74
7.0.20.0070.04016.64
7.0.10.0050.02316.59
7.0.00.0020.04616.67
5.6.380.0070.00313.76
5.6.370.0040.00814.24
5.6.360.0050.00714.37
5.6.350.0040.00914.45
5.6.340.0040.01214.29
5.6.330.0040.01114.20
5.6.320.0080.00514.45
5.6.310.0080.00413.80
5.6.300.0100.00314.23
5.6.290.0060.00914.09
5.6.280.0080.03917.41
5.6.270.0090.00314.57
5.6.260.0060.00913.97
5.6.250.0080.03517.35
5.6.240.0080.04617.32
5.6.230.0050.03617.29
5.6.220.0050.04417.39
5.6.210.0110.03217.44
5.6.200.0030.02817.39
5.6.190.0170.03917.45
5.6.180.0080.03417.64
5.6.170.0050.04217.46
5.6.160.0050.02917.76
5.6.150.0070.05017.62
5.6.140.0080.04217.66
5.6.130.0080.04417.56
5.6.120.0050.02917.48
5.6.110.0080.03417.60
5.6.100.0050.04517.53
5.6.90.0060.04517.64
5.6.80.0030.04417.17
5.6.70.0030.03417.03
5.6.60.0050.04717.13
5.6.50.0020.02717.39
5.6.40.0080.03817.16
5.6.30.0070.03517.19
5.6.20.0050.03617.16
5.6.10.0080.03317.23
5.6.00.0100.02017.24
5.5.380.0030.04515.83
5.5.370.0030.04615.80
5.5.360.0040.04715.76
5.5.350.0120.03415.75
5.5.340.0050.04516.03
5.5.330.0060.03816.00
5.5.320.0050.02815.99
5.5.310.0080.03815.98
5.5.300.0100.02515.95
5.5.290.0080.02616.01
5.5.280.0050.02816.04
5.5.270.0040.03216.04
5.5.260.0050.04715.98
5.5.250.0060.04315.94
5.5.240.0020.02715.71
5.5.230.0040.04315.70
5.5.220.0050.03815.69
5.5.210.0080.03815.69
5.5.200.0020.04115.66
5.5.190.0090.03715.71
5.5.180.0070.04515.70
5.5.170.0040.00411.18
5.5.160.0060.02215.70
5.5.150.0080.02615.72
5.5.140.0060.02315.58
5.5.130.0050.02115.72
5.5.120.0020.02315.64
5.5.110.0010.02415.67
5.5.100.0020.02415.67
5.5.90.0070.01515.62
5.5.80.0050.03015.59
5.5.70.0050.02215.62
5.5.60.0050.02015.64
5.5.50.0030.01715.66
5.5.40.0100.01315.63
5.5.30.0060.01615.61
5.5.20.0070.03815.62
5.5.10.0030.02515.61
5.5.00.0030.03215.59
5.4.450.0030.04415.24
5.4.440.0030.03715.30
5.4.430.0060.04115.20
5.4.420.0070.02315.32
5.4.410.0050.02215.17
5.4.400.0030.02315.15
5.4.390.0120.02815.15
5.4.380.0080.01515.13
5.4.370.0030.04615.15
5.4.360.0060.03715.15
5.4.350.0010.04315.15
5.4.340.0030.03515.14
5.4.330.0040.00411.18
5.4.320.0080.02315.07
5.4.310.0020.04214.99
5.4.300.0060.02015.14
5.4.290.0100.01615.05
5.4.280.0030.02314.99
5.4.270.0050.02015.12
5.4.260.0000.02315.16
5.4.250.0020.02215.20
5.4.240.0040.02415.11
5.4.230.0000.02415.06
5.4.220.0030.02015.07
5.4.210.0000.02415.09
5.4.200.0020.02415.20
5.4.190.0050.02215.10
5.4.180.0050.02014.97
5.4.170.0030.02615.12
5.4.160.0020.02515.09
5.4.150.0040.04115.15
5.4.140.0000.03113.74
5.4.130.0040.01813.70
5.4.120.0030.02113.69
5.4.110.0100.01813.70
5.4.100.0050.01913.78
5.4.90.0020.02413.78
5.4.80.0050.02113.77
5.4.70.0020.02213.80
5.4.60.0040.01813.74
5.4.50.0080.01813.68
5.4.40.0040.01913.80
5.4.30.0070.01713.73
5.4.20.0020.02113.81
5.4.10.0080.01713.73
5.4.00.0030.02213.43
5.3.290.0090.01912.92
5.3.280.0050.01712.84
5.3.270.0010.02312.88
5.3.260.0030.04012.88
5.3.250.0030.03912.89
5.3.240.0030.02312.86
5.3.230.0070.01812.88
5.3.220.0020.02212.80
5.3.210.0000.02612.87
5.3.200.0030.02012.82
5.3.190.0070.02012.86
5.3.180.0030.03012.86
5.3.170.0050.03312.80
5.3.160.0020.02212.79
5.3.150.0030.02012.84
5.3.140.0080.01512.85
5.3.130.0040.02012.85
5.3.120.0050.01812.84
5.3.110.0000.02512.86
5.3.100.0020.02212.60
5.3.90.0050.02012.57
5.3.80.0070.01712.59
5.3.70.0000.02412.58
5.3.60.0000.02812.51
5.3.50.0080.01712.48
5.3.40.0020.02212.49
5.3.30.0040.02212.47
5.3.20.0080.01312.32
5.3.10.0030.02012.37
5.3.00.0030.02312.38
5.2.170.0020.01911.49
5.2.160.0020.01611.49
5.2.150.0040.01611.49
5.2.140.0060.01511.49
5.2.130.0030.01711.49
5.2.120.0030.01511.49
5.2.110.0080.01111.49
5.2.100.0000.02011.49
5.2.90.0010.01611.49
5.2.80.0010.02011.49
5.2.70.0000.02011.49
5.2.60.0030.01511.49
5.2.50.0020.01811.49
5.2.40.0020.01811.49
5.2.30.0060.01311.49
5.2.20.0040.01311.49
5.2.10.0020.01711.49
5.2.00.0030.01811.49
5.1.60.0020.01711.49
5.1.50.0030.01411.49
5.1.40.0020.01511.49
5.1.30.0020.01811.49
5.1.20.0000.02111.49
5.1.10.0030.02711.49
5.1.00.0040.02811.49
5.0.50.0030.01511.49
5.0.40.0010.02611.49
5.0.30.0000.02411.49
5.0.20.0020.01211.49
5.0.10.0050.02011.49
5.0.00.0000.03611.49
4.4.90.0050.00711.49
4.4.80.0020.01011.49
4.4.70.0050.00811.49
4.4.60.0030.01011.49
4.4.50.0000.01111.49
4.4.40.0010.01511.49
4.4.30.0080.00311.49
4.4.20.0030.01811.49
4.4.10.0030.01511.49
4.4.00.0020.02611.49
4.3.110.0020.01811.49
4.3.100.0020.01511.49
4.3.90.0000.02211.49
4.3.80.0050.02011.49
4.3.70.0050.01511.49
4.3.60.0030.02011.49
4.3.50.0040.01711.49
4.3.40.0020.02711.49
4.3.30.0030.00811.49
4.3.20.0000.02011.49
4.3.10.0010.01611.49
4.3.00.0000.02111.49

preferences:
51.98 ms | 401 KiB | 5 Q