3v4l.org

run code in 300+ PHP versions simultaneously
<?php $vars = array(); function assign ($var, $value) { global $vars; $vars[$var] = $value; } $a = new stdClass; $a->x = 3; assign('a', $a); $a->x = $a->x + 1; if ($vars['a']->x == $a->x) { print 'By reference'; } else { print 'By value'; }

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)
8.3.60.0140.00318.43
8.3.50.0120.00621.21
8.3.40.0070.00718.64
8.3.30.0070.00719.98
8.3.20.0000.00820.29
8.3.10.0050.00321.13
8.3.00.0080.00022.55
8.2.180.0120.00416.38
8.2.170.0060.00822.96
8.2.160.0110.00922.11
8.2.150.0040.00424.18
8.2.140.0070.00324.66
8.2.130.0080.00026.16
8.2.120.0050.00320.68
8.2.110.0030.00719.39
8.2.100.0040.00717.78
8.2.90.0000.00719.17
8.2.80.0040.00418.05
8.2.70.0030.00517.34
8.2.60.0000.01018.04
8.2.50.0060.00318.07
8.2.40.0040.00418.21
8.2.30.0000.00719.32
8.2.20.0080.00017.72
8.2.10.0000.00817.74
8.2.00.0040.00417.62
8.1.280.0130.00625.92
8.1.270.0060.00323.99
8.1.260.0080.00026.35
8.1.250.0080.00028.09
8.1.240.0000.00922.54
8.1.230.0060.00620.89
8.1.220.0030.00618.77
8.1.210.0080.00019.11
8.1.200.0000.00917.38
8.1.190.0060.00317.43
8.1.180.0000.00818.10
8.1.170.0050.00318.40
8.1.160.0070.00018.82
8.1.150.0040.00418.68
8.1.140.0000.00817.36
8.1.130.0000.00717.75
8.1.120.0070.00017.36
8.1.110.0000.00717.46
8.1.100.0000.00717.34
8.1.90.0030.00617.46
8.1.80.0030.00617.50
8.1.70.0030.00517.36
8.1.60.0000.00917.60
8.1.50.0000.00717.52
8.1.40.0000.00817.50
8.1.30.0040.00417.52
8.1.20.0000.00817.49
8.1.10.0030.00517.57
8.1.00.0070.00017.44
8.0.300.0000.00820.03
8.0.290.0000.00817.15
8.0.280.0070.00018.43
8.0.270.0040.00417.30
8.0.260.0060.00016.83
8.0.250.0050.00316.88
8.0.240.0060.00316.89
8.0.230.0030.00316.91
8.0.220.0060.00016.91
8.0.210.0000.00716.71
8.0.200.0000.00616.77
8.0.190.0000.00716.92
8.0.180.0070.00316.86
8.0.170.0000.00716.82
8.0.160.0000.00716.71
8.0.150.0080.00016.68
8.0.140.0000.00716.65
8.0.130.0000.00613.24
8.0.120.0070.00016.77
8.0.110.0040.00416.82
8.0.100.0000.00816.79
8.0.90.0040.00416.88
8.0.80.0130.00616.84
8.0.70.0000.00816.83
8.0.60.0060.00316.88
8.0.50.0000.00717.00
8.0.30.0060.01217.18
8.0.20.0080.01217.40
8.0.10.0040.00416.90
8.0.00.0120.00916.67
7.4.330.0030.00315.02
7.4.320.0040.00416.45
7.4.300.0030.00316.64
7.4.290.0030.00316.41
7.4.280.0030.00316.58
7.4.270.0030.00316.56
7.4.260.0030.00313.32
7.4.250.0040.00416.46
7.4.240.0030.00316.61
7.4.230.0030.00316.36
7.4.220.0120.00616.42
7.4.210.0080.00716.59
7.4.200.0000.00716.36
7.4.190.0070.00016.66
7.4.160.0080.00816.34
7.4.150.0150.00417.40
7.4.140.0080.01017.86
7.4.130.0130.00616.58
7.4.120.0090.01016.53
7.4.110.0080.01316.55
7.4.100.0090.00916.43
7.4.90.0030.01516.47
7.4.80.0090.00919.39
7.4.70.0080.01216.52
7.4.60.0130.00716.41
7.4.50.0030.00616.63
7.4.40.0100.00722.77
7.4.30.0100.00616.53
7.4.00.0070.01014.92
7.3.330.0000.00613.15
7.3.320.0070.00013.13
7.3.310.0000.00716.32
7.3.300.0000.00716.41
7.3.290.0100.00316.38
7.3.280.0110.00516.38
7.3.270.0070.01117.40
7.3.260.0130.00918.24
7.3.250.0140.00816.44
7.3.240.0040.01216.29
7.3.230.0120.00616.46
7.3.210.0060.01316.40
7.3.200.0140.00719.39
7.3.190.0060.01316.53
7.3.180.0000.01616.55
7.3.170.0060.00916.42
7.3.160.0130.00416.52
7.3.120.0090.00714.98
7.3.110.0030.01414.75
7.3.100.0060.00615.04
7.3.90.0120.00615.03
7.3.80.0030.00914.52
7.3.70.0060.00914.99
7.3.60.0100.00314.88
7.3.50.0060.00614.80
7.3.40.0030.00914.86
7.3.30.0030.00914.93
7.3.20.0030.01016.63
7.3.10.0000.00916.64
7.3.00.0100.00616.85
7.2.330.0150.00416.80
7.2.320.0070.01016.49
7.2.310.0070.01116.64
7.2.300.0090.00816.78
7.2.290.0100.00716.77
7.2.250.0000.01315.29
7.2.240.0070.01315.32
7.2.230.0060.00914.97
7.2.220.0030.01315.27
7.2.210.0000.01414.78
7.2.200.0000.01015.22
7.2.190.0070.00715.20
7.2.180.0070.00714.82
7.2.170.0090.00315.14
7.2.00.0060.00619.13
7.1.330.0070.00716.09
7.1.320.0100.00715.86
7.1.310.0040.00815.77
7.1.300.0030.00715.39
7.1.290.0100.00315.88
7.1.280.0030.01015.87
7.1.270.0060.00315.82
7.1.260.0000.01215.82
7.1.100.0000.01418.15
7.1.70.0080.00617.30
7.1.60.0060.01919.17
7.1.50.0040.01416.91
7.1.00.0000.04722.37
7.0.200.0060.00316.78
7.0.140.0000.07722.07
7.0.100.0170.07020.03
7.0.90.0100.08020.03
7.0.80.0130.08019.90
7.0.70.0100.07320.14
7.0.60.0030.04719.96
7.0.50.0100.07720.22
7.0.40.0000.06020.05
7.0.30.0000.04320.09
7.0.20.0100.08020.10
7.0.10.0070.07720.03
7.0.00.0000.08020.04
5.6.280.0070.07021.04
5.6.250.0100.07720.63
5.6.240.0070.08320.61
5.6.230.0070.08020.57
5.6.220.0100.07720.55
5.6.210.0100.03720.59
5.6.200.0130.07321.00
5.6.190.0100.05721.11
5.6.180.0070.03721.03
5.6.170.0030.04720.94
5.6.160.0100.07720.95
5.6.150.0070.08321.02
5.6.140.0000.07721.09
5.6.130.0070.06721.10
5.6.120.0070.04021.08
5.6.110.0000.05321.02
5.6.100.0030.06721.08
5.6.90.0070.07321.00
5.6.80.0000.06320.39
5.6.70.0000.04320.40
5.6.60.0070.04320.42
5.6.50.0100.04320.50
5.6.40.0030.04020.45
5.6.30.0030.04020.41
5.6.20.0100.03320.41
5.6.10.0070.03320.37
5.6.00.0000.03720.30
5.5.380.0100.07320.36
5.5.370.0100.07320.52
5.5.360.0000.09020.34
5.5.350.0130.05020.35
5.5.340.0030.04720.81
5.5.330.0070.05320.74
5.5.320.0030.04020.84
5.5.310.0000.05020.82
5.5.300.0200.03720.91
5.5.290.0030.04320.88
5.5.280.0170.03720.59
5.5.270.0000.06020.81
5.5.260.0000.09020.82
5.5.250.0070.04020.62
5.5.240.0100.05320.15
5.5.230.0030.04020.27
5.5.220.0070.05020.28
5.5.210.0070.06320.18
5.5.200.0070.05320.16
5.5.190.0070.04020.00
5.5.180.0030.04020.24
5.5.160.0070.06720.19
5.5.150.0000.05020.18
5.5.140.0070.03720.26
5.5.130.0030.04720.14
5.5.120.0000.06020.23
5.5.110.0030.03720.08
5.5.100.0070.04320.07
5.5.90.0100.03320.07
5.5.80.0100.07320.17
5.5.70.0100.07719.96
5.5.60.0000.08020.15
5.5.50.0070.04720.11
5.5.40.0000.07320.16
5.5.30.0070.07720.03
5.5.20.0100.07720.08
5.5.10.0070.07720.03
5.5.00.0100.07320.04
5.4.450.0070.05319.42
5.4.440.0030.08319.20
5.4.430.0030.04019.35
5.4.420.0000.07019.20
5.4.410.0030.04019.32
5.4.400.0000.04319.23
5.4.390.0070.04018.84
5.4.380.0030.04019.21
5.4.370.0100.03319.04
5.4.360.0070.03718.88
5.4.350.0100.05019.04
5.4.340.0030.04019.13
5.4.320.0130.02319.03
5.4.310.0070.05318.91
5.4.300.0100.06019.13
5.4.290.0000.03319.10
5.4.280.0000.06718.93
5.4.270.0100.06319.09
5.4.260.0000.05319.14
5.4.250.0100.03319.02
5.4.240.0030.05318.87
5.4.230.0030.05719.02
5.4.220.0100.04719.04
5.4.210.0170.06718.87
5.4.200.0200.05719.00
5.4.190.0100.05718.92
5.4.180.0070.07319.13
5.4.170.0000.08019.15
5.4.160.0070.06719.00
5.4.150.0030.07719.14
5.4.140.0100.07316.37
5.4.130.0170.06016.45
5.4.120.0100.05016.21
5.4.110.0130.06316.41
5.4.100.0070.07016.42
5.4.90.0130.05716.47
5.4.80.0070.07316.32
5.4.70.0030.07016.26
5.4.60.0100.06316.36
5.4.50.0070.07316.25
5.4.40.0070.07316.29
5.4.30.0070.06716.24
5.4.20.0070.06716.36
5.4.10.0100.07716.48
5.4.00.0000.07715.80
5.3.290.0000.03714.80
5.3.280.0100.07314.56
5.3.270.0100.06714.53
5.3.260.0070.07314.71
5.3.250.0070.07014.71
5.3.240.0130.06314.54
5.3.230.0030.07314.57
5.3.220.0100.07014.57
5.3.210.0030.04714.54
5.3.200.0100.07714.63
5.3.190.0070.04014.68
5.3.180.0100.03714.57
5.3.170.0270.04014.49
5.3.160.0000.07314.62
5.3.150.0000.08014.49
5.3.140.0030.07014.48
5.3.130.0070.07714.61
5.3.120.0030.05314.57
5.3.110.0070.07014.53
5.3.100.0130.06314.06
5.3.90.0070.05714.03
5.3.80.0100.06714.04
5.3.70.0070.07313.96
5.3.60.0030.07714.06
5.3.50.0170.06313.98
5.3.40.0030.05713.93
5.3.30.0030.06013.97
5.3.20.0130.06313.71
5.3.10.0000.07713.68
5.3.00.0030.04713.70
5.2.170.0030.06011.32
5.2.160.0070.05711.32
5.2.150.0070.04011.32
5.2.140.0070.06011.32
5.2.130.0000.06311.32
5.2.120.0000.07011.32
5.2.110.0030.06311.32
5.2.100.0170.04711.32
5.2.90.0100.06011.32
5.2.80.0000.06711.32
5.2.70.0030.04011.32
5.2.60.0030.06311.32
5.2.50.0100.05311.32
5.2.40.0030.05711.32
5.2.30.0030.05711.32
5.2.20.0030.06011.32
5.2.10.0070.06011.32
5.2.00.0000.04011.32
5.1.60.0070.04711.32
5.1.50.0030.05711.32
5.1.40.0100.04711.32
5.1.30.0070.05311.32
5.1.20.0000.05311.32
5.1.10.0030.06011.32
5.1.00.0000.06011.32
5.0.50.0030.04011.32
5.0.40.0000.02711.32
5.0.30.0000.06711.32
5.0.20.0030.04311.32
5.0.10.0030.04311.32
5.0.00.0000.06711.32
4.4.90.0000.03311.32
4.4.80.0000.02311.32
4.4.70.0070.02011.32
4.4.60.0000.03711.32
4.4.50.0030.03711.32
4.4.40.0000.05311.32
4.4.30.0000.03711.32
4.4.20.0030.03011.32
4.4.10.0000.03011.32
4.4.00.0000.05311.32
4.3.110.0000.03711.32
4.3.100.0070.02711.32
4.3.90.0030.02311.32
4.3.80.0000.05311.32
4.3.70.0030.03011.32
4.3.60.0030.03311.32
4.3.50.0070.03011.32
4.3.40.0030.05011.32
4.3.30.0000.03711.32
4.3.20.0000.04011.32
4.3.10.0000.03711.32
4.3.00.0000.03311.32

preferences:
43.49 ms | 401 KiB | 5 Q