3v4l.org

run code in 300+ PHP versions simultaneously
<?php //Source: https://bugs.php.net/bug.php?id=64896 class bad { private $_private = array(); public function __construct() { $this->_private[] = 'oh noes'; } public function __destruct() { //echo "bad::destructor\n"; global $bar; $bar = $this->_private; } } $foo = new stdclass; $foo->foo = $foo; $foo->bad = new bad; print_r($foo); gc_disable(); for ($i=0; true; $i++) { //$deep_clone = unserialize(serialize($foo)); $deep_clone = clone $foo; gc_collect_cycles(); var_dump($i); }

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)
8.3.60.0170.02118.19
8.3.50.0190.01121.09
8.3.40.0160.01918.57
8.3.30.0120.00920.39
8.3.20.0070.00720.29
8.3.10.0140.00020.91
8.3.00.0080.00422.38
8.2.180.0230.00316.50
8.2.170.0420.01422.96
8.2.160.0200.01722.13
8.2.150.0110.00024.18
8.2.140.0130.00324.66
8.2.130.0260.00026.16
8.2.120.0100.00020.81
8.2.110.0200.01219.32
8.2.100.0150.01117.91
8.2.90.0100.00018.98
8.2.80.0070.00719.40
8.2.70.0060.00617.63
8.2.60.0030.00617.93
8.2.50.0070.00318.07
8.2.40.0040.00918.17
8.2.30.0110.00019.49
8.2.20.0030.00717.66
8.2.10.0090.00317.69
8.2.00.0040.01317.73
8.1.280.0160.01625.92
8.1.270.0200.00523.99
8.1.260.0120.00026.35
8.1.250.0130.00328.09
8.1.240.0350.00324.00
8.1.230.0070.01020.96
8.1.220.0030.00618.77
8.1.210.0070.00319.02
8.1.200.0070.00717.36
8.1.190.0070.00717.51
8.1.180.0080.00418.10
8.1.170.0070.01018.48
8.1.160.0130.00618.76
8.1.150.0060.00618.50
8.1.140.0070.00717.32
8.1.130.0070.00317.88
8.1.120.0080.00417.37
8.1.110.0120.00617.47
8.1.100.0090.00417.34
8.1.90.0030.01017.47
8.1.80.0070.00417.34
8.1.70.0030.00717.42
8.1.60.0030.00717.59
8.1.50.0060.00617.47
8.1.40.0060.00617.56
8.1.30.0040.01317.62
8.1.20.0070.00417.71
8.1.10.0110.00317.61
8.1.00.0030.01417.36
8.0.300.0070.00319.90
8.0.290.0090.00016.93
8.0.280.0080.00318.38
8.0.270.0070.01017.18
8.0.260.0100.00316.74
8.0.250.0030.00616.85
8.0.240.0000.01116.85
8.0.230.0070.00316.79
8.0.220.0050.00516.79
8.0.210.0090.00016.78
8.0.200.0070.00316.81
8.0.190.0040.00816.93
8.0.180.0040.00716.78
8.0.170.0110.00016.77
8.0.160.0030.00916.70
8.0.150.0070.00316.89
8.0.140.0000.00916.80
8.0.130.0070.00313.32
8.0.120.0070.00316.82
8.0.110.0040.00716.78
8.0.100.0000.00916.62
8.0.90.0100.00016.66
8.0.80.0210.02816.77
8.0.70.0000.01116.64
8.0.60.0110.00416.72
8.0.50.0130.00016.87
8.0.30.0400.02617.09
8.0.20.0360.02617.40
8.0.10.0050.00516.94
8.0.00.0580.02316.71
7.4.330.0060.00616.79
7.4.320.0000.00916.41
7.4.300.0100.00316.39
7.4.290.0030.00616.31
7.4.280.0040.00716.25
7.4.270.0030.00716.34
7.4.260.0070.00313.38
7.4.250.0030.00616.39
7.4.240.0040.00816.28
7.4.230.0060.00316.41
7.4.220.0060.02516.34
7.4.210.0170.01516.33
7.4.200.0080.00816.29
7.4.190.0030.00616.37
7.4.160.0470.02416.34
7.4.150.0550.04017.40
7.4.140.0400.02717.86
7.4.130.0440.03516.44
7.4.120.0430.03416.43
7.4.110.0370.03516.15
7.4.100.0970.04616.41
7.4.90.0430.04816.34
7.4.80.0270.04819.39
7.4.70.0270.06016.37
7.4.60.1000.03316.52
7.4.50.0070.01416.27
7.4.40.0030.01722.77
7.4.30.0160.04216.39
7.3.330.0000.01113.34
7.3.320.0150.00513.36
7.3.310.0030.01016.10
7.3.300.0100.00016.16
7.3.290.0130.02816.38
7.3.280.0200.02216.26
7.3.270.0150.01817.40
7.3.260.0310.02818.24
7.3.250.0480.03416.30
7.3.240.0470.03516.38
7.3.230.0480.03516.45
7.3.210.0340.02416.20
7.3.200.0160.03519.39
7.3.190.0400.02116.18
7.3.180.0170.01616.32
7.3.170.0750.04116.35
7.3.160.0770.03416.36
7.2.330.0230.01316.63
7.2.320.0320.04716.62
7.2.310.0360.03516.28
7.2.300.0250.01816.51
7.2.290.0410.02516.57
7.2.90.1350.01314.64
7.2.80.0310.00914.36
7.2.70.1690.00915.01
7.2.60.0410.02114.49
7.2.50.0220.02414.78
7.2.40.1820.01714.77
7.2.30.0330.01114.75
7.2.20.0610.02114.96
7.2.10.0660.01315.19
7.2.00.0860.02614.81
7.1.210.1000.02213.93
7.1.200.1440.02013.61
7.1.190.1740.01713.89
7.1.180.0610.01813.45
7.1.170.1150.01013.74
7.1.160.0460.01013.63
7.1.150.0300.02214.06
7.1.140.0340.01413.83
7.1.130.0430.00413.58
7.1.120.0480.01313.93
7.1.110.1470.00913.84
7.1.100.1220.01313.80
7.1.90.0630.02613.78
7.1.80.1670.01414.08
7.1.70.0650.03313.73
7.1.60.1500.02531.41
7.1.50.1500.01332.07
7.1.40.0480.02131.41
7.1.30.1850.02431.89
7.1.20.1930.01432.06
7.1.10.0590.01314.01
7.1.00.0310.01913.38
7.0.310.0950.01913.48
7.0.300.0440.01913.32
7.0.290.0490.02913.68
7.0.280.0470.02213.58
7.0.270.0380.02113.59
7.0.260.0500.01413.67
7.0.250.1610.02313.62
7.0.240.0320.02213.77
7.0.230.1350.02413.51
7.0.220.0360.02313.61
7.0.210.1380.02613.37
7.0.200.0320.02913.28
7.0.190.1200.01713.31
7.0.180.0270.00313.61
7.0.170.0990.02813.38
7.0.160.0280.02013.69
7.0.150.0500.02213.43
7.0.140.1180.00813.50
7.0.130.0660.02113.56
7.0.120.1830.02313.77
7.0.110.1430.02313.46
7.0.100.1670.01313.45
7.0.90.1210.02113.68
7.0.80.1520.01313.57
7.0.70.1230.02913.55
7.0.60.1160.00313.59
7.0.50.1080.02213.73
7.0.40.0990.02113.67
7.0.30.0940.01713.75
7.0.20.0350.01613.54
7.0.10.0950.02213.69
7.0.00.1180.01613.49
5.6.300.0290.03614.54
5.6.290.0260.02314.60
5.6.280.0300.03114.30
5.6.270.0360.02014.56
5.6.260.0570.02114.46
5.6.250.0350.02814.74
5.6.240.0290.02314.61
5.6.230.0300.02714.39
5.6.220.0270.01914.58
5.6.210.0320.01414.61
5.6.200.0450.02014.63
5.6.190.0250.03314.58
5.6.180.0200.01014.10
5.6.170.0430.03014.59
5.6.160.0230.02314.43
5.6.150.0170.01314.33
5.6.140.0170.03114.45
5.6.130.0290.02214.57
5.6.120.0230.02114.17
5.6.110.0450.01714.36
5.6.100.0300.02314.72
5.6.90.0140.01814.48
5.6.80.0270.02714.56
5.6.70.0410.01814.23
5.6.60.0320.02714.53
5.6.50.0170.02014.42
5.6.40.0320.01714.29
5.5.380.0220.02511.29
5.5.370.0190.02311.18
5.5.360.0370.01911.25
5.5.350.0310.01411.09
5.5.340.0240.02111.18
5.5.330.0290.02611.23
5.5.320.0340.01711.27
5.5.310.0200.02411.36
5.5.300.0180.02811.50
5.5.290.0240.03811.35
5.5.280.0270.01811.36
5.5.270.0200.02411.18
5.5.260.0160.03211.45
5.5.250.0370.02311.11
5.5.240.0410.01811.24
5.5.230.0290.02011.21
5.5.220.0330.01411.21
5.5.210.0240.02711.04
5.5.200.0120.02811.36
5.4.450.0170.03710.84
5.4.440.0210.02811.27
5.4.430.0280.03210.89
5.4.420.0390.02511.53
5.4.410.0290.01511.19
5.4.400.0190.01011.04
5.4.390.0370.01411.15
5.4.380.0150.01111.33
5.4.370.0230.02310.90
5.4.360.0320.01411.09

preferences:
45.16 ms | 401 KiB | 5 Q