3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ''; var_dump(isset($a->b)); $a = 'a'; var_dump(isset($a->b)); $a = '0'; var_dump(isset($a->b)); $a = ''; var_dump(isset($a['b'])); $a = 'a'; var_dump(isset($a['b'])); $a = '0'; var_dump(isset($a['b'])); $simpleString = "Bogus String Text"; echo isset($simpleString->wrong)?"bug\n":"ok\n"; echo isset($simpleString["wrong"])?"ok\n":"bug\n"; echo isset($simpleString[-1])?"bug\n":"ok\n"; echo isset($simpleString[0])?"ok\n":"bug\n"; echo isset($simpleString["0"])?"ok\n":"bug\n"; echo isset($simpleString["16"])?"ok\n":"bug\n"; echo isset($simpleString["17"])?"bug\n":"ok\n"; echo isset($simpleString["wrong"][0])?"bug\n":"ok\n"; echo $simpleString->wrong === null?"ok\n":"bug\n"; echo $simpleString["wrong"] === "B"?"ok\n":"bug\n"; echo $simpleString["0"] === "B"?"ok\n":"bug\n"; $simpleString["wrong"] = "f"; echo $simpleString["0"] === "f"?"ok\n":"bug\n";

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)
8.3.60.0150.00318.31
8.3.50.0100.00821.89
8.3.40.0000.01418.84
8.3.30.0070.00719.04
8.3.20.0070.00020.16
8.3.10.0060.00323.61
8.3.00.0040.00418.95
8.2.180.0080.00818.41
8.2.170.0070.00722.96
8.2.160.0070.01020.39
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0050.00226.16
8.2.120.0040.00420.91
8.2.110.0000.01622.25
8.2.100.0150.00017.72
8.2.90.0040.00419.22
8.2.80.0040.00417.97
8.2.70.0030.00717.63
8.2.60.0060.00318.05
8.2.50.0030.00618.07
8.2.40.0050.00320.07
8.2.30.0000.00718.34
8.2.20.0080.00017.70
8.2.10.0050.00217.96
8.2.00.0050.00317.63
8.1.280.0100.00325.92
8.1.270.0050.00323.78
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0070.01022.18
8.1.230.0040.00723.89
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0080.00417.23
8.1.190.0060.00617.10
8.1.180.0090.00018.10
8.1.170.0040.00418.65
8.1.160.0020.00521.97
8.1.150.0040.00418.64
8.1.140.0060.00317.40
8.1.130.0000.00717.72
8.1.120.0050.00317.41
8.1.110.0020.00517.34
8.1.100.0070.00017.43
8.1.90.0030.00317.41
8.1.80.0000.00717.31
8.1.70.0000.00717.45
8.1.60.0000.00917.37
8.1.50.0050.00217.48
8.1.40.0000.00817.44
8.1.30.0100.00017.64
8.1.20.0040.00417.56
8.1.10.0060.00317.61
8.1.00.0090.00017.51
8.0.300.0040.00418.77
8.0.290.0080.00017.16
8.0.280.0000.00718.34
8.0.270.0030.00317.21
8.0.260.0000.00717.28
8.0.250.0000.00717.01
8.0.240.0060.00317.05
8.0.230.0000.00716.88
8.0.220.0000.00716.88
8.0.210.0030.00316.89
8.0.200.0070.00016.98
8.0.190.0050.00316.81
8.0.180.0000.00716.80
8.0.170.0000.00716.84
8.0.160.0050.00516.90
8.0.150.0000.00716.94
8.0.140.0000.00716.84
8.0.130.0030.00313.34
8.0.120.0000.00716.93
8.0.110.0040.00416.98
8.0.100.0060.00316.74
8.0.90.0070.00017.01
8.0.80.0100.01316.98
8.0.70.0000.00816.89
8.0.60.0000.00816.94
8.0.50.0050.00316.79
8.0.30.0130.00516.99
8.0.20.0100.01117.40
8.0.10.0070.00017.05
8.0.00.0110.00716.65
7.4.330.0000.00515.00
7.4.320.0050.00316.60
7.4.300.0000.00616.56
7.4.290.0030.00716.56
7.4.280.0030.00316.52
7.4.270.0040.00316.51
7.4.260.0000.00716.58
7.4.250.0000.00716.63
7.4.240.0020.00516.53
7.4.230.0030.00316.33
7.4.220.0030.01516.66
7.4.210.0100.00716.57
7.4.200.0000.00716.59
7.4.190.0030.00316.75
7.4.160.0060.01016.54
7.4.150.0040.01417.40
7.4.140.0150.00617.86
7.4.130.0080.00916.68
7.4.120.0080.00816.67
7.4.110.0110.00716.60
7.4.100.0060.01116.53
7.4.90.0030.01316.46
7.4.80.0100.01019.39
7.4.70.0070.01416.56
7.4.60.0120.00916.47
7.4.50.0000.00816.61
7.4.40.0110.01116.59
7.4.30.0170.00016.54
7.4.00.0080.00915.00
7.3.330.0070.00013.29
7.3.320.0030.00313.39
7.3.310.0040.00416.31
7.3.300.0000.00616.40
7.3.290.0100.00516.44
7.3.280.0100.00916.40
7.3.270.0110.00717.40
7.3.260.0090.00916.46
7.3.250.0090.01016.31
7.3.240.0060.01516.47
7.3.230.0130.00516.60
7.3.210.0180.00316.61
7.3.200.0090.01419.39
7.3.190.0100.01016.41
7.3.180.0080.00816.66
7.3.170.0100.00716.50
7.3.160.0100.00616.46
7.3.120.0060.00914.84
7.3.110.0070.01015.14
7.3.100.0000.01414.63
7.3.90.0040.00815.07
7.3.80.0100.00714.79
7.3.70.0030.00714.67
7.3.60.0060.00314.68
7.3.50.0040.01214.80
7.3.40.0060.00914.88
7.3.30.0000.01414.86
7.3.20.0100.00716.47
7.3.10.0100.00616.36
7.3.00.0040.01116.35
7.2.330.0030.01516.78
7.2.320.0070.01716.81
7.2.310.0120.01116.75
7.2.300.0070.01416.64
7.2.290.0140.00716.52
7.2.250.0110.00815.09
7.2.240.0060.01314.80
7.2.230.0030.01315.10
7.2.220.0090.00615.06
7.2.210.0070.00315.30
7.2.200.0070.01015.22
7.2.190.0090.00615.16
7.2.180.0110.00015.03
7.2.170.0040.00815.20
7.2.60.0090.00317.10
7.2.00.0080.00819.22
7.1.330.0040.01415.90
7.1.320.0110.00415.64
7.1.310.0090.00915.78
7.1.300.0100.00315.49
7.1.290.0100.00015.79
7.1.280.0070.00315.92
7.1.270.0000.01715.82
7.1.260.0090.00615.63
7.1.200.0070.00715.84
7.1.100.0130.00918.18
7.1.70.0030.00316.95
7.1.60.0110.01419.46
7.1.50.0150.00616.95
7.1.00.0000.08022.36
7.0.200.0050.00216.62
7.0.140.0070.07322.08
7.0.60.0030.08020.03
7.0.50.0070.05017.84
7.0.40.0070.05320.19
7.0.30.0530.07320.02
7.0.20.0200.04019.99
7.0.10.0070.05020.33
7.0.00.0100.08320.29
5.6.280.0030.06721.13
5.6.210.0000.08720.57
5.6.200.0070.07718.19
5.6.190.0070.06020.79
5.6.180.3370.04020.29
5.6.170.0230.08020.46
5.6.160.0070.08020.38
5.6.150.0100.06318.17
5.6.140.0070.08318.18
5.6.130.0000.04318.18
5.6.120.0000.04321.15
5.6.110.0100.03721.03
5.6.100.0100.04021.14
5.6.90.0100.07021.02
5.6.80.0130.03720.51
5.6.70.4330.03720.40
5.5.350.0030.06720.41
5.5.340.0100.07717.88
5.5.330.0030.06320.25
5.5.320.0200.05720.20
5.5.310.0370.06720.29
5.5.300.0100.07718.02
5.5.290.0070.05717.96
5.5.280.0070.08320.90
5.5.270.0070.04720.87
5.5.260.0070.04020.84
5.5.250.0030.05720.59
5.5.240.0270.07320.18
5.4.450.0830.04019.64
5.4.440.0600.06319.24
5.4.430.0870.06019.63
5.4.420.0630.00019.29
5.4.410.0170.05318.74
5.4.400.0230.05718.67
5.4.390.0330.07318.54
5.4.380.0300.05018.46
5.4.370.0070.05018.63
5.4.360.0130.04318.51
5.4.350.0110.04111.98
5.4.340.0060.03611.98
5.4.320.0070.03512.47
5.4.310.0080.04612.46
5.4.300.0040.03812.46
5.4.290.0070.04012.46
5.4.280.0040.03712.36
5.4.270.0060.04012.36
5.4.260.0040.04412.36
5.4.250.0040.05512.36
5.4.240.0090.05112.36
5.4.230.0080.05112.35
5.4.220.0040.04212.35
5.4.210.0080.03712.35
5.4.200.0100.04012.35
5.4.190.0100.04012.35
5.4.180.0090.04112.35
5.4.170.0080.04012.36
5.4.160.0110.03812.36
5.4.150.0110.04912.35
5.4.140.0100.05312.04
5.4.130.0070.05112.02
5.4.120.0060.06411.98
5.4.110.0160.04911.98
5.4.100.0110.04711.98
5.4.90.0060.05511.98
5.4.80.0090.05211.98
5.4.70.0080.04211.97
5.4.60.0070.05411.97
5.4.50.0090.04811.98
5.4.40.0090.04711.96
5.4.30.0120.04311.96
5.4.20.0100.04811.96
5.4.10.0100.04711.96
5.4.00.0110.04011.45
5.3.290.0060.03912.80
5.3.280.0060.05112.71
5.3.270.0070.04512.72
5.3.260.0100.05612.72
5.3.250.0070.05112.72
5.3.240.0080.04212.71
5.3.230.0090.04012.71
5.3.220.0040.04112.68
5.3.210.0100.04012.68
5.3.200.0080.03612.68
5.3.190.0060.04012.68
5.3.180.0070.03612.67
5.3.170.0080.03612.67
5.3.160.0130.03312.67
5.3.150.0100.04712.67
5.3.140.0080.05012.66
5.3.130.0090.04112.66
5.3.120.0080.04012.66
5.3.110.0090.04612.66
5.3.100.0060.04812.12
5.3.90.0080.05212.08
5.3.80.0060.03912.08
5.3.70.0060.03912.07
5.3.60.0040.03812.06
5.3.50.0060.05212.00
5.3.40.0090.05112.00
5.3.30.0070.05211.96
5.3.20.0080.05011.74
5.3.10.0080.05111.70
5.3.00.0110.05011.70
5.2.170.0090.0419.20
5.2.160.0050.0449.20
5.2.150.0160.0579.20
5.2.140.0210.0639.20
5.2.130.0110.0549.15
5.2.120.0090.0449.15
5.2.110.0110.0399.16
5.2.100.0110.0449.15
5.2.90.0080.0379.15
5.2.80.0090.0299.15
5.2.70.0070.0439.15
5.2.60.0050.0339.10
5.2.50.0020.0409.07
5.2.40.0060.0379.05
5.2.30.0050.0369.02
5.2.20.0030.0379.01
5.2.10.0080.0328.93
5.2.00.0080.0338.80
5.1.60.0080.0258.08
5.1.50.0070.0288.07
5.1.40.0080.0318.06
5.1.30.0080.0298.41
5.1.20.0040.0338.43
5.1.10.0090.0308.15
5.1.00.0080.0278.15
5.0.50.0050.0196.63
5.0.40.0050.0216.49
5.0.30.0040.0346.31
5.0.20.0040.0216.28
5.0.10.0040.0316.26
5.0.00.0020.0466.25
4.4.90.0070.0214.78
4.4.80.0040.0154.75
4.4.70.0020.0214.75
4.4.60.0020.0184.75
4.4.50.0000.0214.77
4.4.40.0040.0344.71
4.4.30.0050.0214.76
4.4.20.0040.0234.84
4.4.10.0030.0194.84
4.4.00.0040.0324.76
4.3.110.0040.0174.67
4.3.100.0050.0174.66
4.3.90.0070.0314.63
4.3.80.0030.0344.59
4.3.70.0090.0264.63
4.3.60.0080.0334.63
4.3.50.0050.0204.63
4.3.40.0050.0304.54
4.3.30.0020.0213.30
4.3.20.0020.0213.28
4.3.10.0050.0183.24
4.3.00.0170.0176.69

preferences:
41.8 ms | 401 KiB | 5 Q