3v4l.org

run code in 300+ PHP versions simultaneously
<?php $instance = new stdClass(); $assigned = $instance; $reference =& $instance; $instance->var = '$assigned будет иметь это значение'; //$instance = null; // $instance и $reference становятся null var_dump($instance); var_dump($reference); var_dump($assigned);

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)
8.3.60.0110.00718.18
8.3.50.0120.00521.09
8.3.40.0090.00918.54
8.3.30.0070.00720.39
8.3.20.0060.00320.29
8.3.10.0000.00820.96
8.3.00.0040.00423.51
8.2.180.0070.00716.75
8.2.170.0110.00422.96
8.2.160.0040.01120.52
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0000.00719.64
8.2.110.0060.00320.58
8.2.100.0070.00417.59
8.2.90.0050.00319.05
8.2.80.0040.00419.40
8.2.70.0030.00617.63
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0000.00818.09
8.2.30.0000.00719.56
8.2.20.0000.00717.66
8.2.10.0080.00017.50
8.2.00.0080.00017.63
8.1.280.0070.01425.92
8.1.270.0050.00323.99
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00322.53
8.1.230.0080.00420.91
8.1.220.0050.00318.77
8.1.210.0050.00518.90
8.1.200.0000.00917.36
8.1.190.0000.00917.53
8.1.180.0050.00318.10
8.1.170.0000.00918.46
8.1.160.0030.00518.71
8.1.150.0000.00818.63
8.1.140.0040.00417.32
8.1.130.0030.00617.85
8.1.120.0070.00017.31
8.1.110.0050.00317.41
8.1.100.0040.00417.43
8.1.90.0070.00017.31
8.1.80.0030.00517.43
8.1.70.0030.00317.29
8.1.60.0060.00317.51
8.1.50.0030.00617.46
8.1.40.0030.00517.47
8.1.30.0040.00417.54
8.1.20.0040.00417.58
8.1.10.0030.00617.55
8.1.00.0080.00017.46
8.0.300.0070.00020.02
8.0.290.0040.00417.18
8.0.280.0000.00718.39
8.0.270.0030.00317.21
8.0.260.0000.00616.68
8.0.250.0000.00816.89
8.0.240.0040.00416.92
8.0.230.0000.00716.77
8.0.220.0030.00316.75
8.0.210.0000.00716.85
8.0.200.0030.00316.87
8.0.190.0000.00716.80
8.0.180.0040.00416.79
8.0.170.0040.00416.79
8.0.160.0040.00416.87
8.0.150.0040.00416.81
8.0.140.0040.00416.77
8.0.130.0030.00313.20
8.0.120.0000.00716.73
8.0.110.0070.00016.74
8.0.100.0040.00416.68
8.0.90.0040.00416.84
8.0.80.0060.00916.84
8.0.70.0000.00816.76
8.0.60.0000.00716.90
8.0.50.0000.00716.74
8.0.30.0130.00617.02
8.0.20.0120.01117.40
8.0.10.0000.00717.00
8.0.00.0100.00816.74
7.4.330.0060.00016.83
7.4.320.0030.00316.53
7.4.300.0070.00016.38
7.4.290.0060.00316.56
7.4.280.0040.00416.36
7.4.270.0070.00016.46
7.4.260.0030.00313.22
7.4.250.0040.00416.42
7.4.240.0030.00316.57
7.4.230.0040.00416.34
7.4.220.0100.01716.44
7.4.210.0080.00816.55
7.4.200.0070.00016.36
7.4.190.0030.00316.50
7.4.160.0100.00616.33
7.4.150.0060.01917.40
7.4.140.0150.01617.86
7.4.130.0120.00616.42
7.4.120.0110.00716.43
7.4.110.0130.00716.49
7.4.100.0140.01016.43
7.4.90.0100.00716.63
7.4.80.0100.00919.39
7.4.70.0080.00816.46
7.4.60.0130.00916.28
7.4.50.0030.00516.55
7.4.40.0060.00922.77
7.4.30.0110.00616.24
7.4.00.0110.00315.04
7.3.330.0000.00613.11
7.3.320.0020.00212.98
7.3.310.0000.00716.35
7.3.300.0000.00716.26
7.3.290.0130.00716.35
7.3.280.0060.01316.29
7.3.270.0100.00717.40
7.3.260.0130.01118.24
7.3.250.0080.01116.35
7.3.240.0100.01016.53
7.3.230.0080.00816.50
7.3.210.0140.00316.41
7.3.200.0130.00619.39
7.3.190.0110.01216.33
7.3.180.0100.00616.58
7.3.170.0120.00416.31
7.3.160.0030.01316.22
7.3.120.0000.01314.77
7.2.330.0050.01316.72
7.2.320.0040.01816.54
7.2.310.0060.01116.54
7.2.300.0150.00716.38
7.2.290.0170.00716.39
7.2.110.0160.00516.45
7.2.100.0150.00616.57
7.2.90.0220.00616.60
7.2.80.0180.01216.35
7.2.70.0160.01216.68
7.2.60.0170.01116.84
7.2.50.0150.01516.68
7.2.40.0160.01616.79
7.2.30.0210.00416.82
7.2.20.0190.00716.65
7.2.10.0120.01616.57
7.2.00.0050.01118.05
7.1.230.0220.00415.76
7.1.220.0180.00715.43
7.1.210.0160.01115.27
7.1.200.0150.01115.48
7.1.190.0180.00815.39
7.1.180.0180.01115.68
7.1.170.0150.00915.83
7.1.160.0210.00415.60
7.1.150.0140.01415.84
7.1.140.0140.00915.35
7.1.130.0210.00715.86
7.1.120.0090.01715.68
7.1.110.0170.01015.74
7.1.100.0080.01016.81
7.1.90.0150.01015.93
7.1.80.0130.01315.75
7.1.70.0110.00616.42
7.1.60.0170.01017.53
7.1.50.0120.01216.38
7.1.40.0130.00615.65
7.1.30.0220.01115.93
7.1.20.0130.01615.95
7.1.10.0090.01715.78
7.1.00.0110.04119.09
7.0.310.0150.01015.25
7.0.300.0130.00815.14
7.0.290.0130.00615.01
7.0.280.0220.00015.31
7.0.270.0210.00315.37
7.0.260.0150.01015.39
7.0.250.0250.00015.40
7.0.240.0200.00315.26
7.0.230.0160.00815.15
7.0.220.0250.00015.14
7.0.210.0150.01015.44
7.0.200.0100.00616.03
7.0.190.0140.01015.46
7.0.180.0140.01015.49
7.0.170.0140.00715.10
7.0.160.0200.00415.13
7.0.150.0200.00415.22
7.0.140.0090.03918.63
7.0.130.0200.00615.38
7.0.120.0180.00715.22
7.0.110.0080.01615.24
7.0.100.0210.00415.29
7.0.90.0250.00015.21
7.0.80.0060.01815.48
7.0.70.0200.00015.25
7.0.60.0110.03818.63
7.0.50.0220.04416.67
7.0.40.0170.03216.65
7.0.30.0340.02416.81
7.0.20.0270.04816.69
7.0.10.0260.02416.63
7.0.00.0240.04216.66
5.6.380.0110.01214.14
5.6.370.0230.00314.61
5.6.360.0170.00713.93
5.6.350.0130.01014.09
5.6.340.0160.01214.12
5.6.330.0150.01214.49
5.6.320.0140.00814.43
5.6.310.0220.00514.15
5.6.300.0180.00414.10
5.6.290.0230.00014.48
5.6.280.0110.03917.70
5.6.270.0090.01314.43
5.6.260.0200.00614.51
5.6.250.0220.00414.44
5.6.240.0140.01114.41
5.6.230.0120.01514.31
5.6.220.0160.00414.47
5.6.210.0180.03217.37
5.6.200.0140.02716.15
5.6.190.0300.04417.32
5.6.180.0280.02717.39
5.6.170.0350.02017.29
5.6.160.0180.04017.37
5.6.150.0220.02416.26
5.6.140.0280.04016.06
5.6.130.0220.04016.10
5.6.120.0210.04217.64
5.6.110.0130.05017.73
5.6.100.0170.03417.60
5.6.90.0140.03917.70
5.6.80.0110.04717.17
5.6.70.0100.01514.00
5.6.60.0110.01514.13
5.6.50.0190.00613.93
5.6.40.0180.00714.25
5.6.30.0150.00714.14
5.6.20.0000.02314.35
5.6.10.0210.00314.14
5.6.00.0160.01214.23
5.5.380.0100.00710.89
5.5.370.0080.00810.97
5.5.360.0150.00010.96
5.5.350.0180.01515.67
5.5.340.0130.02714.40
5.5.330.0140.04315.84
5.5.320.0360.03915.56
5.5.310.0300.03515.87
5.5.300.0090.03714.42
5.5.290.0110.03614.40
5.5.280.0150.04415.79
5.5.270.0040.02715.90
5.5.260.0160.02116.04
5.5.250.0090.03315.81
5.5.240.0090.03815.64
5.5.230.0080.00411.00
5.5.220.0090.00610.95
5.5.210.0120.00411.18
5.5.200.0080.00811.06
5.5.190.0080.00811.10
5.5.180.0080.01011.05
5.5.170.0160.00914.31
5.5.160.0050.01011.08
5.5.150.0100.00710.83
5.5.140.0080.00810.77
5.5.130.0130.00310.89
5.5.120.0120.00310.92
5.5.110.0100.00810.68
5.5.100.0140.00011.07
5.5.90.0120.00410.88
5.5.80.0140.00310.98
5.5.70.0170.00010.67
5.5.60.0110.00610.48
5.5.50.0050.01011.04
5.5.40.0130.00311.04
5.5.30.0110.00710.98
5.5.20.0120.00010.84
5.5.10.0080.00811.01
5.5.00.0110.00410.74
5.4.450.2110.02015.10
5.4.440.1920.02415.25
5.4.430.2100.02414.92
5.4.420.2340.02315.27
5.4.410.1960.02215.11
5.4.400.1870.02114.93
5.4.390.1960.02014.95
5.4.380.2250.02115.03
5.4.370.1930.02315.06
5.4.360.1940.02015.07
5.4.350.2380.02114.94
5.4.340.2110.02315.05
5.4.330.0040.00810.80
5.4.320.2030.01914.90
5.4.310.2080.01914.95
5.4.300.2250.02015.14
5.4.290.2180.02514.85
5.4.280.2160.02315.10
5.4.270.1130.01815.04
5.4.260.0060.03314.89
5.4.250.2010.02014.94
5.4.240.1880.02115.09
5.4.230.2120.02014.76
5.4.220.1940.02214.96
5.4.210.2020.02314.97
5.4.200.1890.02515.08
5.4.190.1620.02114.97
5.4.180.1850.02015.12
5.4.170.1000.02214.88
5.4.160.0090.01815.08
5.4.150.1870.01715.07
5.4.140.1810.02013.59
5.4.130.1890.01713.77
5.4.120.1850.01613.65
5.4.110.1930.02113.68
5.4.100.2340.01913.60
5.4.90.2330.02013.64
5.4.80.2140.02413.68
5.4.70.2270.01813.69
5.4.60.2330.01713.49
5.4.50.1690.01713.71
5.4.40.1830.01813.58
5.4.30.1800.02013.48
5.4.20.2030.01913.56
5.4.10.1960.01813.58
5.4.00.1850.01813.41
5.3.290.1750.02112.57
5.3.280.1970.02312.38
5.3.270.1850.02012.58
5.3.260.0100.01812.49
5.3.250.1660.01912.49
5.3.240.1850.01812.45
5.3.230.1820.02112.54
5.3.220.1930.02112.41
5.3.210.1840.01912.41
5.3.200.2240.02112.37
5.3.190.2370.01912.41
5.3.180.2260.01812.46
5.3.170.2190.02512.41
5.3.160.2400.01512.49
5.3.150.2100.02312.50
5.3.140.1940.01912.45
5.3.130.2110.02212.51
5.3.120.1950.02012.44
5.3.110.1920.02512.44
5.3.100.1990.01712.18
5.3.90.1950.02112.18
5.3.80.2030.02312.16
5.3.70.1960.02012.12
5.3.60.2030.02412.17
5.3.50.2010.01812.16
5.3.40.1980.02112.15
5.3.30.1940.02412.13
5.3.20.1880.02012.08
5.3.10.1790.01911.99
5.3.00.1850.02011.92
5.2.170.1680.01510.73
5.2.160.1520.01910.76
5.2.150.1770.01910.75
5.2.140.1650.01810.76
5.2.130.1700.01310.70
5.2.120.1330.01810.67
5.2.110.1780.01010.73
5.2.100.2170.01710.74
5.2.90.1580.02210.68
5.2.80.1470.01910.65
5.2.70.1500.01610.73
5.2.60.1850.01810.70
5.2.50.1790.02010.67
5.2.40.1400.01310.63
5.2.30.1320.01710.75
5.2.20.1300.01710.67
5.2.10.1300.02010.55
5.2.00.1180.01710.54
5.1.60.1390.01210.16
5.1.50.1320.01510.14
5.1.40.1250.01810.17
5.1.30.1660.01210.32
5.1.20.1510.01510.45
5.1.10.1350.01510.25
5.1.00.1340.01510.23
5.0.50.0730.0139.50
5.0.40.0780.0149.40
5.0.30.0860.0199.25
5.0.20.0830.0129.32
5.0.10.0710.0169.28
5.0.00.0640.0179.31
4.4.90.0790.0098.31
4.4.80.0700.0108.31
4.4.70.0650.0118.31
4.4.60.0740.0088.31
4.4.50.0750.0128.31
4.4.40.0740.0158.31
4.4.30.0580.0118.31
4.4.20.0800.0088.31
4.4.10.0670.0128.31
4.4.00.0620.0168.31
4.3.110.0930.0068.31
4.3.100.0850.0108.31
4.3.90.0680.0138.31
4.3.80.0670.0148.31
4.3.70.0610.0088.31
4.3.60.0780.0118.31
4.3.50.0700.0108.31
4.3.40.0750.0168.31
4.3.30.0500.0148.31
4.3.20.0430.0148.31
4.3.10.0520.0128.31
4.3.00.0380.0128.31

preferences:
27.61 ms | 401 KiB | 5 Q