3v4l.org

run code in 300+ PHP versions simultaneously
<?php $rose = "black"; ${"rose"} = "white"; $rose = "red"; print_r(${"rose"}); echo "\n\n"; /** Parse error: syntax error, unexpected '123' (T_LNUMBER), expecting variable (T_VARIABLE) or '{' or '$' $123 = 456; var_dump($123); **/ ${"123"} = "white"; var_dump(${"123"}); echo '<pre>'; var_dump(get_defined_vars()); echo "\n\n"; $arr{" "} = 99; var_dump($arr); $o = (object) $arr; var_dump($o); echo $o->{" "},"\n\n"; class x extends stdClass { public $val; function Show($n){ $this->val = $n; return $this->val; } } $s = new x(); echo $s->Show(100),"\n"; var_dump($s); var_dump($s instanceof stdClass);

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)
8.3.60.0130.00318.56
8.3.50.0100.01021.89
8.3.40.0090.00918.71
8.3.30.0070.00718.96
8.3.20.0040.00420.39
8.3.10.0070.00023.61
8.3.00.0090.00019.22
8.2.180.0080.01116.50
8.2.170.0070.00722.96
8.2.160.0110.00420.57
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0100.00026.16
8.2.120.0100.00322.11
8.2.110.0080.00822.21
8.2.100.0000.01217.78
8.2.90.0070.00019.09
8.2.80.0040.00417.97
8.2.70.0000.00817.38
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0050.00319.76
8.2.30.0080.00017.82
8.2.20.0040.00417.55
8.2.10.0040.00417.93
8.2.00.0040.00417.49
8.1.280.0070.01025.92
8.1.270.0090.00622.07
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0090.00023.71
8.1.230.0000.01119.07
8.1.220.0030.00517.74
8.1.210.0080.00018.77
8.1.200.0030.00617.10
8.1.190.0060.00317.10
8.1.180.0000.00818.10
8.1.170.0050.00618.36
8.1.160.0040.00421.95
8.1.150.0020.00518.76
8.1.140.0050.00217.24
8.1.130.0060.00017.64
8.1.120.0000.00717.40
8.1.110.0030.00617.18
8.1.100.0030.00317.34
8.1.90.0040.00417.36
8.1.80.0030.00317.31
8.1.70.0070.00017.34
8.1.60.0060.00317.46
8.1.50.0030.00517.40
8.1.40.0030.00517.27
8.1.30.0040.00417.42
8.1.20.0000.00717.52
8.1.10.0040.00417.36
8.1.00.0040.00417.21
8.0.300.0070.00018.77
8.0.290.0070.00016.63
8.0.280.0030.00318.30
8.0.270.0000.00717.20
8.0.260.0030.00317.20
8.0.250.0030.00316.91
8.0.240.0080.00016.91
8.0.230.0000.00716.82
8.0.220.0030.00616.74
8.0.210.0070.00016.80
8.0.200.0070.00016.77
8.0.190.0000.00716.80
8.0.180.0030.00516.76
8.0.170.0000.00816.91
8.0.160.0040.00416.87
8.0.150.0000.00716.81
8.0.140.0000.00716.79
8.0.130.0030.00313.35
8.0.120.0040.00416.64
8.0.110.0050.00316.80
8.0.100.0000.00716.85
8.0.90.0040.00416.68
8.0.80.0030.01216.82
8.0.70.0070.00016.71
8.0.60.0040.00416.67
8.0.50.0070.00016.79
8.0.30.0120.00616.83
8.0.20.0110.00817.40
8.0.10.0070.00016.93
8.0.00.0110.00616.64
7.4.330.0000.00615.00
7.4.320.0040.00416.63
7.4.300.0030.00316.61
7.4.290.0000.00716.65
7.4.280.0030.00616.39
7.4.270.0030.00316.44
7.4.260.0040.00416.60
7.4.250.0040.00416.56
7.4.240.0020.00616.51
7.4.230.0000.00816.57
7.4.220.0070.01416.67
7.4.210.0070.01016.68
7.4.200.0000.00716.32
7.4.160.0130.00616.43
7.4.150.0120.00817.40
7.4.140.0100.01017.86
7.4.130.0100.01216.50
7.4.120.0070.01216.60
7.4.110.0070.01116.50
7.4.100.0090.01316.53
7.4.90.0090.01216.40
7.4.80.0000.01919.39
7.4.70.0150.00316.41
7.4.60.0120.00616.29
7.4.50.0060.00816.58
7.4.40.0110.01216.25
7.4.30.0160.00516.23
7.4.20.0100.01016.57
7.4.10.0140.01416.48
7.4.00.0130.00415.67
7.3.330.0060.00013.36
7.3.320.0050.00013.23
7.3.310.0040.00316.20
7.3.300.0070.00016.18
7.3.290.0030.01316.34
7.3.280.0060.01016.28
7.3.270.0140.00317.40
7.3.260.0160.00316.37
7.3.250.0090.00916.37
7.3.240.0160.00816.49
7.3.230.0130.00716.41
7.3.210.0040.01216.39
7.3.200.0110.01419.39
7.3.190.0120.00616.60
7.3.180.0120.00816.44
7.3.170.0110.00716.52
7.3.160.0160.00816.61
7.3.150.0140.00616.43
7.3.140.0170.01116.40
7.3.130.0140.01416.46
7.3.120.0110.01116.45
7.3.110.0160.00516.56
7.3.100.0150.01016.29
7.3.90.0070.01516.56
7.3.80.0070.01416.59
7.3.70.0120.00916.28
7.3.60.0030.01616.51
7.3.50.0190.00316.46
7.3.40.0100.01016.15
7.3.30.0100.01516.21
7.3.20.0130.01016.43
7.3.10.0080.01016.54
7.3.00.0120.01316.52
7.2.330.0150.00516.88
7.2.320.0080.01116.81
7.2.310.0140.01016.75
7.2.300.0140.00716.80
7.2.290.0180.00316.81
7.2.280.0180.00316.43
7.2.270.0190.01016.86
7.2.260.0080.01516.86
7.2.250.0160.00916.88
7.2.240.0150.00716.77
7.2.230.0150.00816.71
7.2.220.0080.02016.74
7.2.210.0070.01516.85
7.2.200.0100.01016.72
7.2.190.0140.00616.52
7.2.180.0150.00816.46
7.2.170.0080.01616.57
7.2.160.0140.01416.60
7.2.150.0170.00316.68
7.2.140.0160.00616.82
7.2.130.0060.01116.94
7.2.120.0120.00516.76
7.2.110.0080.00916.86
7.2.100.0150.01116.95
7.2.90.0150.00916.69
7.2.80.0110.01116.70
7.2.70.0080.01016.85
7.2.60.0120.00616.81
7.2.50.0210.00716.85
7.2.40.0110.00716.94
7.2.30.0100.00916.89
7.2.20.0110.00716.57
7.2.10.0080.00716.90
7.2.00.0130.00417.76
7.1.330.0180.00415.63
7.1.320.0170.00315.77
7.1.310.0120.01515.62
7.1.300.0260.00015.59
7.1.290.0130.00815.58
7.1.280.0040.01515.82
7.1.270.0090.01715.62
7.1.260.0070.01615.68
7.1.250.0070.01115.62
7.1.240.0040.01615.59
7.1.230.0170.01215.55
7.1.220.0160.01015.72
7.1.210.0260.00315.53
7.1.200.0070.01115.54
7.1.190.0120.01215.46
7.1.180.0200.00415.51
7.1.170.0170.00615.40
7.1.160.0130.00615.48
7.1.150.0080.01615.44
7.1.140.0030.01715.54
7.1.130.0130.00615.44
7.1.120.0160.00515.64
7.1.110.0180.00815.64
7.1.100.0130.01016.76
7.1.90.0090.00915.56
7.1.80.0070.01215.52
7.1.70.0080.00716.38
7.1.60.0140.00817.29
7.1.50.0110.00716.27
7.1.40.0090.01215.70
7.1.30.0150.00815.68
7.1.20.0120.00915.37
7.1.10.0090.00915.63
7.1.00.0060.04318.99
7.0.330.0120.00615.06
7.0.320.0070.01715.21
7.0.310.0170.00615.37
7.0.300.0090.00915.14
7.0.290.0110.00615.17
7.0.280.0110.01215.08
7.0.270.0060.01215.30
7.0.260.0160.00415.23
7.0.250.0160.00515.47
7.0.240.0150.00615.28
7.0.230.0130.00715.34
7.0.220.0110.00915.35
7.0.210.0200.00015.47
7.0.200.0100.00515.99
7.0.190.0090.00915.36
7.0.180.0090.00915.18
7.0.170.0140.00715.43
7.0.160.0140.01115.25
7.0.150.0030.01515.01
7.0.140.0230.04318.55
7.0.130.0150.00315.06
7.0.120.0090.01015.25
7.0.110.0110.04217.57
7.0.100.0140.04217.59
7.0.90.0100.04817.68
7.0.80.0090.04317.50
7.0.70.0100.05517.56
7.0.60.0120.04017.58
7.0.50.0080.04717.83
7.0.40.0090.04717.62
7.0.30.0100.04817.67
7.0.20.0110.02817.63
7.0.10.0050.04917.59
7.0.00.0090.03517.54
5.6.400.0110.01116.00
5.6.390.0190.00215.96
5.6.380.0120.01616.02
5.6.370.0120.01216.00
5.6.360.0210.00415.92
5.6.350.0100.01016.00
5.6.340.0100.01416.08
5.6.330.0130.01316.26
5.6.320.0110.01015.98
5.6.310.0160.00916.16
5.6.300.0160.01016.27
5.6.290.0160.01015.99
5.6.280.0060.04518.52
5.6.270.0100.01015.97
5.6.260.0080.04618.44
5.6.250.0060.05118.31
5.6.240.0060.04418.26
5.6.230.0080.04418.28
5.6.220.0140.03318.32
5.6.210.0120.04918.31
5.6.200.0120.04718.67
5.6.190.0090.04618.58
5.6.180.0110.03218.59
5.6.170.0150.03818.60
5.6.160.0150.02318.56
5.6.150.0070.05118.39
5.6.140.0110.04718.50
5.6.130.0100.03318.53
5.6.120.0120.04718.45
5.6.110.0170.04118.69
5.6.100.0160.04218.58
5.6.90.0080.03318.47
5.6.80.0130.03818.29
5.6.70.0100.04418.14
5.6.60.0030.05018.30
5.6.50.0200.03318.16
5.6.40.0090.04418.18
5.6.30.0060.03218.20
5.6.20.0130.04118.18
5.6.10.0080.03018.22
5.6.00.0090.05118.17
5.5.380.0100.03818.13
5.5.370.0080.05018.20
5.5.360.0150.03618.12
5.5.350.0100.03118.09
5.5.340.0100.04918.39
5.5.330.0130.02818.50
5.5.320.0050.05218.38
5.5.310.0140.04118.40
5.5.300.0070.04818.33
5.5.290.0100.04118.43
5.5.280.0160.04318.34
5.5.270.0110.04918.47
5.5.260.0120.03618.41
5.5.250.0080.04918.36
5.5.240.0110.02718.14
5.5.230.0120.04318.16
5.5.220.0100.04618.12
5.5.210.0070.04218.13
5.5.200.0080.02818.03
5.5.190.0150.03918.11
5.5.180.0110.04118.01
5.5.170.0080.01315.92
5.5.160.0070.03218.06
5.5.150.0020.05218.07
5.5.140.0170.03618.03
5.5.130.0150.03918.03
5.5.120.0100.04118.11
5.5.110.0080.04718.01
5.5.100.0090.02717.94
5.5.90.0050.04417.99
5.5.80.0080.05018.01
5.5.70.0060.04318.14
5.5.60.0120.03517.93
5.5.50.0130.02718.05
5.5.40.0060.04717.97
5.5.30.0060.04417.98
5.5.20.0150.03818.09
5.5.10.0050.04918.01
5.5.00.0100.03218.00
5.4.450.0100.04516.09
5.4.440.0110.03616.03
5.4.430.0100.02916.13
5.4.420.0050.04416.22
5.4.410.0070.04415.93
5.4.400.0110.04116.06
5.4.390.0080.03815.99
5.4.380.0110.04016.03
5.4.370.0090.03916.01
5.4.360.0110.03615.83
5.4.350.0080.04316.03
5.4.340.0060.03815.94
5.4.330.0070.01012.86
5.4.320.0100.04116.06
5.4.310.0070.04415.83
5.4.300.0050.04415.92
5.4.290.0110.02315.98
5.4.280.0080.02615.98
5.4.270.0070.04015.81
5.4.260.0050.04115.96
5.4.250.0120.04115.79
5.4.240.0100.04515.85
5.4.230.0100.02615.92
5.4.220.0080.04015.92
5.4.210.0100.04016.02
5.4.200.0100.04215.90
5.4.190.0100.04215.78
5.4.180.0150.03515.86
5.4.170.0090.04115.92
5.4.160.0030.03415.91
5.4.150.0130.03415.90
5.4.140.0110.03614.56
5.4.130.0060.03714.57
5.4.120.0120.03614.59
5.4.110.0100.03814.71
5.4.100.0050.03714.71
5.4.90.0120.03814.55
5.4.80.0050.03914.57
5.4.70.0090.03514.59
5.4.60.0080.04014.69
5.4.50.0090.03814.67
5.4.40.0120.03814.69
5.4.30.0070.04314.58
5.4.20.0100.03614.72
5.4.10.0080.03914.58
5.4.00.0030.04514.34
5.3.290.0040.04614.00
5.3.280.0050.04013.82
5.3.270.0100.04113.91
5.3.260.0100.04113.84
5.3.250.0080.03413.92
5.3.240.0130.03813.89
5.3.230.0140.03713.82
5.3.220.0100.04613.87
5.3.210.0050.04313.93
5.3.200.0150.03713.83
5.3.190.0160.03713.87
5.3.180.0110.04213.94
5.3.170.0090.03913.85
5.3.160.0080.03713.94
5.3.150.0080.02314.01
5.3.140.0070.04713.84
5.3.130.0070.04213.82
5.3.120.0050.03913.83
5.3.110.0090.04313.92
5.3.100.0180.03213.64
5.3.90.0080.03413.69
5.3.80.0070.03413.51
5.3.70.0100.01813.55
5.3.60.0090.03513.57
5.3.50.0100.04213.47
5.3.40.0080.04113.52
5.3.30.0080.04113.63
5.3.20.0070.04213.35
5.3.10.0090.03913.25
5.3.00.0070.03713.25
5.2.170.0050.04012.21
5.2.160.0120.03312.21
5.2.150.0030.03412.21
5.2.140.0050.04112.28
5.2.130.0050.03612.20
5.2.120.0060.02812.23
5.2.110.0070.03512.34
5.2.100.0060.04212.21
5.2.90.0110.03512.33
5.2.80.0110.02412.22
5.2.70.0050.02912.22
5.2.60.0060.01912.20
5.2.50.0040.02212.22
5.2.40.0080.01912.23
5.2.30.0050.03712.22
5.2.20.0030.02712.13
5.2.10.0100.02612.07
5.2.00.0070.02212.03
5.1.60.0060.02611.85
5.1.50.0040.03211.71
5.1.40.0070.02811.80
5.1.30.0070.01711.81
5.1.20.0070.01811.79
5.1.10.0080.01611.74
5.1.00.0090.02711.73
5.0.50.0060.02611.38
5.0.40.0100.02211.32
5.0.30.0060.03011.32
5.0.20.0080.02011.32
5.0.10.0040.02611.32
5.0.00.0090.02811.32
4.4.90.0000.01411.32
4.4.80.0020.01311.32
4.4.70.0030.01711.32
4.4.60.0020.01111.32
4.4.50.0030.01011.32
4.4.40.0010.01311.32
4.4.30.0010.01011.32
4.4.20.0030.01011.32
4.4.10.0000.01311.32
4.4.00.0020.01411.32
4.3.110.0010.01911.32
4.3.100.0030.01611.32
4.3.90.0030.01711.32
4.3.80.0030.01811.32
4.3.70.0050.00511.32
4.3.60.0050.01811.32
4.3.50.0050.01611.32
4.3.40.0050.02011.32
4.3.30.0010.00811.32
4.3.20.0040.01711.32
4.3.10.0020.02011.32
4.3.00.0020.02211.32

preferences:
54.56 ms | 401 KiB | 5 Q