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 $obj->{123}; //echo "\n",$obj->123; // Parse error: ...unexpected '123' (T_LNUMBER), expecting identifier (T_STRING) or variable (T_VARIABLE) or '{' or '$' echo "\n..............................\n"; $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: $obj = (object)array('123' => '456'); // '123' => 123 and identifers must be strings print_r($obj); echo $obj->{'123'},"\n"; // so "Undefined property: stdClass::$123" if (!property_exists($obj,'123')) echo 'property 123 does not exist',"\n"; $obj = new stdClass; $obj->name = "blabe"; echo "The rain in {$obj->name} ...";

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)
8.3.40.0120.00618.98
8.3.30.0060.00819.04
8.3.20.0000.00720.18
8.3.10.0080.00020.48
8.3.00.0050.00319.51
8.2.170.0040.01122.96
8.2.160.0090.00920.54
8.2.150.0030.00524.18
8.2.140.0050.00324.66
8.2.130.0000.00826.16
8.2.120.0040.00422.11
8.2.110.0060.00320.39
8.2.100.0040.00718.09
8.2.90.0050.00319.17
8.2.80.0000.00817.97
8.2.70.0030.00617.71
8.2.60.0060.00318.05
8.2.50.0040.00418.07
8.2.40.0080.00019.94
8.2.30.0040.00418.02
8.2.20.0040.00417.75
8.2.10.0000.00718.14
8.2.00.0000.00717.75
8.1.270.0060.00323.88
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0060.00323.92
8.1.230.0110.00019.08
8.1.220.0050.00317.80
8.1.210.0000.00818.77
8.1.200.0060.00317.36
8.1.190.0000.00917.35
8.1.180.0040.00418.10
8.1.170.0000.00918.56
8.1.160.0000.00822.09
8.1.150.0000.00718.89
8.1.140.0050.00317.39
8.1.130.0000.00717.75
8.1.120.0030.00417.42
8.1.110.0040.00417.38
8.1.100.0000.00717.35
8.1.90.0040.00417.51
8.1.80.0050.00217.50
8.1.70.0040.00417.30
8.1.60.0080.00017.65
8.1.50.0000.00817.56
8.1.40.0040.00417.52
8.1.30.0050.00317.59
8.1.20.0000.00817.54
8.1.10.0040.00417.63
8.1.00.0040.00417.58
8.0.300.0000.00718.77
8.0.290.0000.00716.63
8.0.280.0030.00318.46
8.0.270.0030.00317.15
8.0.260.0000.00617.15
8.0.250.0000.00717.00
8.0.240.0030.00316.92
8.0.230.0070.00016.99
8.0.220.0000.00716.98
8.0.210.0000.00716.87
8.0.200.0000.00617.07
8.0.190.0030.00317.03
8.0.180.0070.00016.94
8.0.170.0080.00017.00
8.0.160.0040.00417.01
8.0.150.0070.00016.82
8.0.140.0070.00016.95
8.0.130.0060.00013.36
8.0.120.0080.00016.88
8.0.110.0000.00716.97
8.0.100.0040.00417.02
8.0.90.0040.00417.00
8.0.80.0030.01216.93
8.0.70.0060.00317.03
8.0.60.0040.00416.88
8.0.50.0040.00416.92
8.0.30.0120.01417.03
8.0.20.0080.01117.42
8.0.10.0000.00717.09
8.0.00.0090.00916.82
7.4.330.0000.00615.02
7.4.320.0000.00616.57
7.4.300.0000.00616.61
7.4.290.0000.00716.52
7.4.280.0040.00416.52
7.4.270.0000.00716.44
7.4.260.0000.00716.60
7.4.250.0030.00616.45
7.4.240.0040.00416.48
7.4.230.0000.00716.43
7.4.220.0110.00716.41
7.4.210.0090.00616.39
7.4.200.0070.00016.44
7.4.160.0140.01016.66
7.4.150.0090.01217.40
7.4.140.0090.00917.86
7.4.130.0120.00516.62
7.4.120.0130.00716.52
7.4.110.0130.00316.56
7.4.100.0070.01716.65
7.4.90.0080.01116.48
7.4.80.0080.01219.39
7.4.70.0110.00816.40
7.4.60.0100.00716.63
7.4.50.0030.00616.68
7.4.40.0090.00916.51
7.4.30.0090.01216.42
7.4.00.0030.00715.04
7.3.330.0030.00313.10
7.3.320.0030.00313.15
7.3.310.0040.00416.39
7.3.300.0050.00216.19
7.3.290.0110.00616.39
7.3.280.0090.00816.38
7.3.270.0120.00917.40
7.3.260.0040.01416.33
7.3.250.0110.00616.64
7.3.240.0090.00916.24
7.3.230.0030.01416.39
7.3.210.0080.01116.54
7.3.200.0090.01419.39
7.3.190.0140.00316.24
7.3.180.0100.00716.47
7.3.170.0080.01616.32
7.3.160.0070.01016.39
7.2.330.0130.00416.66
7.2.320.0060.01116.91
7.2.310.0030.01316.76
7.2.300.0100.00716.83
7.2.290.0100.01316.60
7.2.60.0090.00617.03
7.2.00.0090.00919.55
7.1.200.0070.00716.00
7.1.100.0040.00718.03
7.1.70.0040.00417.12
7.1.60.0140.01019.32
7.1.50.0070.01716.80
7.1.00.0000.07722.35
7.0.200.0040.00716.88
7.0.140.0030.07321.96
7.0.60.0200.07319.96
7.0.50.0030.08317.90
7.0.40.0070.08720.05
7.0.30.0330.07020.24
7.0.20.0230.06720.15
7.0.10.0170.08020.08
7.0.00.0070.08020.22
5.6.280.0070.07020.83
5.6.210.0000.04320.47
5.6.200.0170.07018.15
5.6.190.0030.08720.61
5.6.180.0270.04320.55
5.6.170.0430.07320.52
5.6.160.0000.07320.54
5.6.150.0100.05318.19
5.6.140.0030.08718.24
5.6.130.0070.03718.16
5.6.120.0000.04720.93
5.6.110.0100.07021.11
5.6.100.0130.06720.96
5.6.90.0130.05021.08
5.6.80.0130.04720.54
5.5.350.0230.07320.36
5.5.340.0030.04318.02
5.5.330.0070.04720.21
5.5.320.0300.05020.51
5.5.310.0130.04320.29
5.5.300.0030.08018.01
5.5.290.0130.05018.03
5.5.280.0030.05020.88
5.5.270.0100.03720.86
5.5.260.0070.08320.77
5.5.250.0030.07020.55
5.5.240.0170.08020.20
5.4.450.0500.04719.46
5.4.440.0170.04719.30
5.4.430.0300.03719.40
5.4.420.0670.00019.45
5.4.410.0630.00019.32
5.4.400.0600.00019.16
5.4.390.0630.00019.13
5.4.380.0770.00019.21
5.4.370.0600.00019.15
5.4.360.0630.00019.06
5.4.350.0630.00019.24
5.4.340.0600.00019.11
5.4.320.0080.03512.49
5.4.310.0060.03812.49
5.4.300.0070.04312.49
5.4.290.0040.04012.49
5.4.280.0070.03612.39
5.4.270.0060.03912.39
5.4.260.0080.03612.38
5.4.250.0050.03912.38
5.4.240.0050.03712.39
5.4.230.0120.05312.38
5.4.220.0060.03912.38
5.4.210.0080.04012.38
5.4.200.0050.03912.38
5.4.190.0090.03412.38
5.4.180.0090.03612.37
5.4.170.0090.03412.39
5.4.160.0080.03512.38
5.4.150.0080.03412.38
5.4.140.0060.04412.06
5.4.130.0080.03612.05
5.4.120.0060.04212.00
5.4.110.0090.03712.00
5.4.100.0090.03212.00
5.4.90.0030.04012.00
5.4.80.0060.03812.00
5.4.70.0060.03812.00
5.4.60.0040.03912.00
5.4.50.0060.03612.00
5.4.40.0050.03711.98
5.4.30.0070.03511.98
5.4.20.0040.03711.99
5.4.10.0060.03511.98
5.4.00.0030.03911.48
5.3.290.0030.04412.80
5.3.280.0060.04212.71
5.3.270.0060.03912.73
5.3.260.0070.03812.72
5.3.250.0080.03612.72
5.3.240.0070.03712.72
5.3.230.0090.03612.71
5.3.220.0050.04312.68
5.3.210.0060.03912.68
5.3.200.0070.03612.68
5.3.190.0060.03712.68
5.3.180.0070.03912.68
5.3.170.0090.03512.67
5.3.160.0070.03612.68
5.3.150.0100.03312.68
5.3.140.0070.03712.66
5.3.130.0040.04112.66
5.3.120.0070.03912.66
5.3.110.0070.03912.65
5.3.100.0050.03812.12
5.3.90.0090.03312.10
5.3.80.0050.03712.09
5.3.70.0070.03612.09
5.3.60.0070.03512.08
5.3.50.0040.03812.02
5.3.40.0050.03912.03
5.3.30.0100.03711.98
5.3.20.0080.03711.76
5.3.10.0070.03511.73
5.3.00.0050.03811.72
5.2.170.0040.0319.22
5.2.160.0020.0329.22
5.2.150.0030.0349.22
5.2.140.0050.0319.21
5.2.130.0010.0339.18
5.2.120.0050.0299.18
5.2.110.0060.0289.18
5.2.100.0020.0319.18
5.2.90.0080.0389.18
5.2.80.0070.0329.18
5.2.70.0020.0349.18
5.2.60.0010.0349.13
5.2.50.0030.0339.10
5.2.40.0050.0359.07
5.2.30.0090.0259.05
5.2.20.0040.0319.04
5.2.10.0050.0298.95
5.2.00.0050.0298.81
5.1.60.0060.0248.10
5.1.50.0040.0348.09
5.1.40.0060.0248.07
5.1.30.0050.0258.42
5.1.20.0030.0288.45
5.1.10.0050.0268.17
5.1.00.0060.0248.17
5.0.50.0020.0236.65
5.0.40.0040.0196.51
5.0.30.0030.0326.32
5.0.20.0030.0206.29
5.0.10.0040.0216.27
5.0.00.0030.0326.26
4.4.90.0040.0154.78
4.4.80.0030.0154.75
4.4.70.0050.0134.75
4.4.60.0030.0154.75
4.4.50.0060.0124.77
4.4.40.0020.0264.71
4.4.30.0030.0154.76
4.4.20.0020.0164.85
4.4.10.0040.0144.85
4.4.00.0030.0264.75
4.3.110.0020.0174.67
4.3.100.0020.0224.67
4.3.90.0040.0164.64
4.3.80.0020.0264.59
4.3.70.0020.0154.63
4.3.60.0030.0144.63
4.3.50.0060.0124.63
4.3.40.0020.0304.54
4.3.30.0020.0173.28
4.3.20.0040.0153.25
4.3.10.0040.0143.21
4.3.00.0070.01713.60

preferences:
39.83 ms | 400 KiB | 5 Q