3v4l.org

run code in 300+ PHP versions simultaneously
<?php $obj = new stdClass; $obj->{'123'} = '456'; // defined property but unusable as obj->property; see below. print_r($obj); echo 'Via {\'123\'}: ' . $obj->{'123'},"\n"; if (isset($obj->{'123'})) { echo '123 is set',"\n";} if (property_exists($obj,'123')) echo 'property 123 exists',"\n"; echo $obj->{'123'}; // Parse error: ...unexpected '123' (T_LNUMBER), expecting identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$' $obj->{'a123'} = $obj->{'123'}; print_r($obj); echo 'Via Property a123: ' . $obj->a123,"\n"; // making a hash out of property a $obj->a["123"] = $obj->{'123'}; $obj->a["a123"] = $obj->{'a123'}; var_dump($obj); echo 'Via Property "a" and hashkey "123": ' . $obj->a["123"],"\n"; // contrast: $obj = (object)array((string)'123' => '456'); // property 123 is invalid print_r($obj); echo $obj->{'123'},"\n"; // so "Undefined property: stdClass::$123"

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)
8.3.40.0100.01018.96
8.3.30.0110.00419.21
8.3.20.0040.00420.29
8.3.10.0050.00320.41
8.3.00.0060.00319.51
8.2.170.0180.00022.96
8.2.160.0070.00720.43
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0050.00322.14
8.2.110.0060.00320.60
8.2.100.0000.01118.09
8.2.90.0040.00419.14
8.2.80.0040.00417.97
8.2.70.0030.00617.63
8.2.60.0000.00818.04
8.2.50.0030.00618.07
8.2.40.0080.00019.94
8.2.30.0080.00018.21
8.2.20.0040.00417.75
8.2.10.0000.00718.27
8.2.00.0080.00017.82
8.1.270.0050.00323.87
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0090.00023.96
8.1.230.0060.00619.00
8.1.220.0050.00317.74
8.1.210.0030.00518.77
8.1.200.0060.00317.36
8.1.190.0000.00817.23
8.1.180.0050.00218.10
8.1.170.0050.00318.50
8.1.160.0070.00022.09
8.1.150.0040.00418.93
8.1.140.0000.00717.42
8.1.130.0030.00317.89
8.1.120.0040.00417.35
8.1.110.0040.00417.42
8.1.100.0000.00717.39
8.1.90.0070.00017.48
8.1.80.0000.00717.38
8.1.70.0000.00717.30
8.1.60.0000.00817.62
8.1.50.0030.00517.49
8.1.40.0070.00017.61
8.1.30.0080.00017.54
8.1.20.0000.00817.61
8.1.10.0030.00517.64
8.1.00.0040.00417.51
8.0.300.0060.00318.77
8.0.290.0000.00716.75
8.0.280.0030.00518.37
8.0.270.0040.00417.28
8.0.260.0000.00717.24
8.0.250.0050.00216.98
8.0.240.0000.00717.11
8.0.230.0070.00016.91
8.0.220.0030.00316.86
8.0.210.0030.00516.91
8.0.200.0000.00717.05
8.0.190.0030.00517.04
8.0.180.0040.00417.04
8.0.170.0060.00317.06
8.0.160.0000.00816.95
8.0.150.0040.00416.93
8.0.140.0000.00816.93
8.0.130.0050.00013.39
8.0.120.0040.00416.90
8.0.110.0070.00016.75
8.0.100.0000.00816.79
8.0.90.0070.00016.90
8.0.80.0100.00616.80
8.0.70.0000.00816.93
8.0.60.0000.00716.75
8.0.50.0000.00816.73
8.0.30.0090.01017.29
8.0.20.0080.01317.42
8.0.10.0040.00417.13
8.0.00.0110.01216.85
7.4.330.0000.00515.15
7.4.320.0000.00616.54
7.4.300.0070.00016.63
7.4.290.0070.00016.64
7.4.280.0030.00916.65
7.4.270.0030.00316.49
7.4.260.0030.00316.54
7.4.250.0080.00016.41
7.4.240.0020.00516.61
7.4.230.0000.00716.66
7.4.220.0090.00916.57
7.4.210.0070.00716.46
7.4.200.0040.00416.38
7.4.160.0100.00716.62
7.4.150.0110.00917.40
7.4.140.0150.00217.86
7.4.130.0060.01216.47
7.4.120.0120.00516.55
7.4.110.0080.00816.38
7.4.100.0090.00916.39
7.4.90.0140.00416.58
7.4.80.0110.00719.39
7.4.70.0030.01716.69
7.4.60.0130.00316.46
7.4.50.0030.00616.53
7.4.40.0120.00616.43
7.4.30.0040.01316.68
7.4.00.0040.01215.20
7.3.330.0060.00013.18
7.3.320.0050.00013.11
7.3.310.0030.00316.19
7.3.300.0040.00416.40
7.3.290.0030.01316.34
7.3.280.0120.00816.31
7.3.270.0140.01017.40
7.3.260.0070.01016.34
7.3.250.0070.01116.28
7.3.240.0100.01016.58
7.3.230.0030.01416.55
7.3.210.0100.00716.29
7.3.200.0030.01419.39
7.3.190.0070.01416.32
7.3.180.0110.00716.44
7.3.170.0070.01016.46
7.3.160.0120.00616.51
7.2.330.0180.00016.41
7.2.320.0070.01016.71
7.2.310.0130.00316.77
7.2.300.0000.01616.65
7.2.290.0130.00316.84
7.2.60.0100.00316.83
7.2.00.0070.01419.44
7.1.200.0090.00615.64
7.1.100.0030.01018.00
7.1.70.0000.01017.23
7.1.60.0130.01319.32
7.1.50.0090.01616.89
7.1.00.0070.07322.48
7.0.200.0000.00916.80
7.0.140.0030.07022.21
7.0.70.5070.03319.91
7.0.60.0030.04020.03
7.0.50.0130.05717.87
7.0.40.0030.07020.29
7.0.30.0270.08320.11
7.0.20.0370.06320.18
7.0.10.0170.04020.09
7.0.00.0030.06320.23
5.6.280.0000.07721.14
5.6.210.0100.06320.47
5.6.200.0070.06318.19
5.6.190.0100.08020.57
5.6.180.0070.08720.44
5.6.170.0270.08320.50
5.6.160.0100.05320.57
5.6.150.0070.08018.28
5.6.140.0100.06018.23
5.6.130.0070.04718.16
5.6.120.0200.06721.02
5.6.110.0100.04021.04
5.6.100.0100.08721.02
5.6.90.0070.07320.98
5.6.80.0030.07720.29
5.6.70.0130.07720.45
5.5.350.0030.08020.41
5.5.340.0070.05317.91
5.5.330.0100.07020.33
5.5.320.0030.08320.19
5.5.310.0200.06020.26
5.5.300.0030.04017.99
5.5.290.0200.07317.94
5.5.280.0170.07720.84
5.5.270.0030.07720.75
5.5.260.0070.06720.75
5.5.250.0030.04020.57
5.5.240.0100.07720.25
5.4.450.0530.04719.16
5.4.440.0430.04319.54
5.4.430.0870.04019.41
5.4.420.0670.00019.53
5.4.410.0630.00019.42
5.4.400.0670.00019.26
5.4.390.0670.00019.08
5.4.380.0630.00019.24
5.4.370.0600.00019.24
5.4.360.0600.00019.04
5.4.350.0630.00019.15
5.4.340.0630.00018.98
5.4.320.0070.03712.48
5.4.310.0030.04212.48
5.4.300.0060.03712.48
5.4.290.0100.03912.48
5.4.280.0070.03512.38
5.4.270.0060.03612.38
5.4.260.0040.03912.38
5.4.250.0050.03912.38
5.4.240.0060.03612.38
5.4.230.0080.03512.37
5.4.220.0090.03412.37
5.4.210.0100.03312.37
5.4.200.0050.04212.37
5.4.190.0050.03912.37
5.4.180.0070.03812.37
5.4.170.0080.03612.38
5.4.160.0070.03912.38
5.4.150.0050.03812.37
5.4.140.0060.03712.05
5.4.130.0050.03712.04
5.4.120.0050.04612.00
5.4.110.0090.04812.00
5.4.100.0050.04712.00
5.4.90.0090.03511.99
5.4.80.0050.03812.00
5.4.70.0060.03511.99
5.4.60.0070.03311.99
5.4.50.0060.03511.99
5.4.40.0060.03511.98
5.4.30.0050.03711.98
5.4.20.0090.03511.97
5.4.10.0070.03511.98
5.4.00.0020.04111.46
5.3.290.0030.04212.80
5.3.280.0090.03512.71
5.3.270.0080.03812.72
5.3.260.0050.04112.72
5.3.250.0040.03912.71
5.3.240.0030.04012.72
5.3.230.0100.03412.71
5.3.220.0070.03712.68
5.3.210.0050.04212.68
5.3.200.0050.03812.68
5.3.190.0090.03612.68
5.3.180.0070.03612.67
5.3.170.0080.03512.67
5.3.160.0070.03612.68
5.3.150.0060.03712.68
5.3.140.0070.03712.66
5.3.130.0070.03912.66
5.3.120.0060.04112.66
5.3.110.0100.03612.66
5.3.100.0050.04012.12
5.3.90.0070.03712.09
5.3.80.0080.03712.08
5.3.70.0060.03812.08
5.3.60.0060.04012.06
5.3.50.0060.04012.02
5.3.40.0050.03812.02
5.3.30.0070.03511.97
5.3.20.0080.04011.75
5.3.10.0060.03811.72
5.3.00.0080.03411.71
5.2.170.0080.0289.21
5.2.160.0070.0279.21
5.2.150.0050.0319.21
5.2.140.0060.0309.20
5.2.130.0060.0289.16
5.2.120.0050.0289.17
5.2.110.0030.0329.17
5.2.100.0070.0279.17
5.2.90.0030.0329.17
5.2.80.0070.0289.16
5.2.70.0070.0299.16
5.2.60.0070.0299.12
5.2.50.0050.0309.08
5.2.40.0050.0309.05
5.2.30.0060.0299.04
5.2.20.0060.0299.03
5.2.10.0030.0308.94
5.2.00.0040.0308.80
5.1.60.0050.0258.07
5.1.50.0060.0248.07
5.1.40.0080.0218.05
5.1.30.0040.0288.39
5.1.20.0060.0258.41
5.1.10.0040.0268.14
5.1.00.0030.0278.14
5.0.50.0050.0196.64
5.0.40.0060.0176.50
5.0.30.0050.0316.30
5.0.20.0050.0186.28
5.0.10.0030.0206.26
5.0.00.0020.0326.25
4.4.90.0030.0154.78
4.4.80.0050.0134.76
4.4.70.0050.0134.76
4.4.60.0040.0144.75
4.4.50.0020.0164.77
4.4.40.0030.0254.71
4.4.30.0040.0144.76
4.4.20.0060.0124.84
4.4.10.0030.0154.85
4.4.00.0030.0264.76
4.3.110.0020.0174.66
4.3.100.0020.0164.66
4.3.90.0020.0154.63
4.3.80.0010.0264.58
4.3.70.0020.0164.63
4.3.60.0020.0154.63
4.3.50.0020.0164.63
4.3.40.0060.0224.54
4.3.30.0010.0173.30
4.3.20.0020.0163.27
4.3.10.0030.0153.23
4.3.00.0000.01313.60

preferences:
47.48 ms | 400 KiB | 5 Q