3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Singleton { private static $instance = null; private function __construct() { } public static function getInstance() { if (self::$instance === null) { self::$instance = new self(); } return self::$instance; } } $singleton = Singleton::getInstance(); try { $singleton = new Singleton(); } catch (Throwable $e) { echo $e->getMessage(); }

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)
8.3.60.0120.00616.50
8.3.50.0140.00718.05
8.3.40.0140.00018.76
8.3.30.0110.00418.82
8.3.20.0000.00819.93
8.3.10.0040.00423.48
8.3.00.0090.00019.23
8.2.180.0110.00716.38
8.2.170.0070.00722.96
8.2.160.0070.01020.39
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0090.00317.63
8.2.110.0040.00822.27
8.2.100.0000.01117.92
8.2.90.0080.00019.23
8.2.80.0080.00017.97
8.2.70.0060.00317.50
8.2.60.0000.00817.93
8.2.50.0030.00618.07
8.2.40.0040.00419.34
8.2.30.0070.00020.68
8.2.20.0000.00817.73
8.2.10.0030.00518.11
8.2.00.0000.00717.98
8.1.270.0040.00423.82
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0180.00422.59
8.1.230.0040.00817.66
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0080.00017.35
8.1.190.0060.00317.13
8.1.180.0040.00418.10
8.1.170.0080.00018.58
8.1.160.0030.00521.96
8.1.150.0000.00718.82
8.1.140.0050.00319.52
8.1.130.0030.00517.68
8.1.120.0000.00817.43
8.1.110.0000.00717.40
8.1.100.0030.00517.30
8.1.90.0040.00417.34
8.1.80.0000.00717.43
8.1.70.0040.00417.45
8.1.60.0030.00617.64
8.1.50.0090.00317.42
8.1.40.0060.00317.55
8.1.30.0030.00517.61
8.1.20.0030.00517.68
8.1.10.0000.00817.63
8.1.00.0030.00617.48
8.0.300.0080.00018.77
8.0.290.0000.00716.75
8.0.280.0070.00018.45
8.0.270.0000.00717.19
8.0.260.0000.00817.20
8.0.250.0000.00716.91
8.0.240.0000.00717.01
8.0.230.0030.00316.92
8.0.220.0000.00716.89
8.0.210.0000.00716.93
8.0.200.0000.00716.88
8.0.190.0090.00016.99
8.0.180.0000.00716.94
8.0.170.0030.00616.94
8.0.160.0070.00016.80
8.0.150.0040.00416.86
8.0.140.0030.00316.95
8.0.130.0060.00013.34
8.0.120.0030.00616.75
8.0.110.0030.00316.81
8.0.100.0070.00016.90
8.0.90.0000.00716.73
8.0.80.0110.00416.91
8.0.70.0030.00516.77
8.0.60.0080.00016.72
8.0.50.0030.00516.77
8.0.30.0090.00917.10
8.0.20.0090.01217.40
8.0.10.0000.00816.86
8.0.00.0080.01016.85
7.4.330.0050.00015.08
7.4.320.0000.00616.55
7.4.300.0030.00316.46
7.4.290.0000.00716.41
7.4.280.0000.00716.40
7.4.270.0030.00316.53
7.4.260.0030.00316.61
7.4.250.0000.00716.48
7.4.240.0050.00216.59
7.4.230.0000.00716.68
7.4.220.0100.01316.52
7.4.210.0030.01216.49
7.4.200.0030.00316.70
7.4.160.0080.00816.35
7.4.150.0180.00017.40
7.4.140.0120.01117.86
7.4.130.0070.01016.57
7.4.120.0060.01116.57
7.4.110.0030.02016.69
7.4.100.0130.01016.50
7.4.90.0130.00316.44
7.4.80.0040.01319.39
7.4.70.0070.01016.48
7.4.60.0130.00416.58
7.4.50.0030.00316.30
7.4.40.0110.00516.75
7.4.30.0140.00316.36
7.4.10.0100.01015.09
7.4.00.0070.01114.86
7.3.330.0030.00313.20
7.3.320.0070.00013.32
7.3.310.0000.00816.23
7.3.300.0070.00016.41
7.3.290.0080.00816.34
7.3.280.0090.01016.33
7.3.270.0070.01017.40
7.3.260.0060.01216.37
7.3.250.0060.01116.39
7.3.240.0030.01616.53
7.3.230.0060.01316.44
7.3.210.0160.00616.40
7.3.200.0100.01016.52
7.3.190.0080.00816.41
7.3.180.0060.01216.32
7.3.170.0040.01216.37
7.3.160.0080.00816.40
7.3.130.0100.00614.67
7.3.120.0100.00914.79
7.3.110.0040.01314.63
7.3.100.0040.00914.92
7.3.90.0040.00814.74
7.3.80.0050.01014.72
7.3.70.0050.00714.68
7.3.60.0030.01314.72
7.3.50.0050.00914.81
7.3.40.0070.00714.89
7.3.30.0080.00514.85
7.3.20.0060.00816.57
7.3.10.0090.00816.49
7.3.00.0060.00616.63
7.2.330.0100.00716.68
7.2.320.0150.00316.77
7.2.310.0100.01016.83
7.2.300.0130.00316.82
7.2.290.0100.00716.64
7.2.260.0070.00915.22
7.2.250.0070.01015.09
7.2.240.0040.01315.01
7.2.230.0050.01115.12
7.2.220.0050.00714.99
7.2.210.0020.01414.95
7.2.200.0100.00315.08
7.2.190.0090.00615.04
7.2.180.0080.00815.19
7.2.170.0040.00814.97
7.2.160.0050.00815.17
7.2.150.0030.01216.84
7.2.140.0070.00416.77
7.2.130.0020.00816.98
7.2.120.0080.00516.99
7.2.110.0080.00316.91
7.2.100.0050.00616.86
7.2.90.0060.00916.90
7.2.80.0170.00516.76
7.2.70.0060.01017.08
7.2.60.0060.00916.98
7.2.50.0030.01117.00
7.2.40.0080.00517.10
7.2.30.0020.00716.89
7.2.20.0050.01117.03
7.2.10.0060.00916.91
7.2.00.0080.00517.75
7.1.330.0060.00815.80
7.1.320.0070.00615.63
7.1.310.0080.00715.58
7.1.300.0090.00615.72
7.1.290.0030.01015.60
7.1.280.0040.00815.51
7.1.270.0060.00915.51
7.1.260.0010.01015.74
7.1.250.0050.00615.53
7.1.240.0100.00215.81
7.1.230.0060.00615.72
7.1.220.0040.00715.75
7.1.210.0030.00715.76
7.1.200.0040.01215.70
7.1.190.0060.00215.75
7.1.180.0090.00415.63
7.1.170.0020.01215.74
7.1.160.0060.00615.69
7.1.150.0030.00515.71
7.1.140.0080.00615.73
7.1.130.0070.00415.70
7.1.120.0070.00515.76
7.1.110.0060.00815.73
7.1.100.0070.00816.41
7.1.90.0080.00615.59
7.1.80.0050.00715.66
7.1.70.0040.00616.14
7.1.60.0090.00917.03
7.1.50.0070.01016.06
7.1.40.0110.00515.64
7.1.30.0010.01315.56
7.1.20.0050.00915.44
7.1.10.0080.00515.50
7.1.00.0060.02917.97
7.0.330.0030.00915.33
7.0.320.0040.00815.51
7.0.310.0030.00915.44
7.0.300.0060.00515.38
7.0.290.0040.00715.21
7.0.280.0120.00215.44
7.0.270.0050.00915.54
7.0.260.0050.00915.33
7.0.250.0060.00515.42
7.0.240.0080.00415.29
7.0.230.0080.00615.48
7.0.220.0040.00915.38
7.0.210.0020.01115.38
7.0.200.0320.01015.14
7.0.190.0070.00915.38
7.0.180.0050.00815.31
7.0.170.0060.00615.34
7.0.160.0050.00715.51
7.0.150.0090.00615.29
7.0.140.0050.00915.38
7.0.130.0040.00715.44
7.0.120.0040.01015.37
7.0.110.0030.00715.46
7.0.100.0050.00715.36
7.0.90.0000.01415.32
7.0.80.0070.00715.41
7.0.70.0060.00715.40
7.0.60.0060.02416.83
7.0.50.0050.01916.20
7.0.40.0090.02215.61
7.0.30.0120.02115.71
7.0.20.0140.02915.55
7.0.10.0040.02815.70
7.0.00.0040.01815.71
5.6.400.0040.00914.35
5.6.390.0020.01114.45
5.6.380.0070.00514.21
5.6.370.0080.00614.55
5.6.360.0040.00814.53
5.6.350.0040.00714.19
5.6.340.0020.01114.26
5.6.330.0070.00414.56
5.6.320.0060.00614.37
5.6.310.0050.00814.57
5.6.300.0090.00714.40
5.6.290.0050.00714.41
5.6.280.0060.01316.54
5.6.270.0020.01214.46
5.6.260.0050.00714.16
5.6.250.0070.00714.62
5.6.240.0060.00714.49
5.6.230.0070.00814.44
5.6.220.0060.00614.48
5.6.210.0080.02216.48
5.6.200.0100.02415.61
5.6.190.0020.02516.42
5.6.180.0170.02816.27
5.6.170.0120.02216.40
5.6.160.0050.01916.51
5.6.150.0040.02615.77
5.6.140.0050.01615.65
5.6.130.0060.01715.72
5.6.120.0050.02116.68
5.6.110.0050.02916.59
5.6.100.0080.01616.43
5.6.90.0070.01816.49
5.6.80.0060.01516.40
5.6.70.0090.00414.04
5.6.60.0070.00714.23
5.6.50.0010.01114.32
5.6.40.0030.01014.34
5.6.30.0110.00314.28
5.6.20.0030.01014.51
5.6.10.0060.00714.28
5.6.00.0040.00614.13
5.5.380.0090.00614.38
5.5.370.0050.00614.28
5.5.360.0070.00714.53
5.5.350.0140.02316.48
5.5.340.0060.03315.55
5.5.330.0040.02016.33
5.5.320.0090.01916.28
5.5.310.0100.01716.38
5.5.300.0080.02815.70
5.5.290.0030.01815.65
5.5.280.0100.03016.55
5.5.270.0070.03216.44
5.5.260.0060.03016.61
5.5.250.0030.02016.31
5.5.240.0060.03016.22
5.5.230.0050.00614.23
5.5.220.0020.01014.29
5.5.210.0080.00714.22
5.5.200.0040.01014.23
5.5.190.0050.00614.07
5.5.180.0030.01214.33
5.5.170.0060.00713.89
5.5.160.0070.00614.37
5.5.150.0050.00714.19
5.5.140.0020.01414.30
5.5.130.0080.00814.23
5.5.120.0050.00714.11
5.5.110.0030.01014.39
5.5.100.0020.00914.18
5.5.90.0050.00514.34
5.5.80.0040.01014.16
5.5.70.0070.00414.05
5.5.60.0070.00214.35
5.5.50.0050.00814.28
5.5.40.0080.00714.40
5.5.30.0020.01214.19
5.5.20.0030.00814.15
5.5.10.0080.00514.45
5.5.00.0040.01014.17
5.4.450.0080.02114.14
5.4.440.0060.02214.18
5.4.430.0110.03014.20
5.4.420.0170.02814.21
5.4.410.0110.02214.13
5.4.400.0080.02114.13
5.4.390.0080.02114.18
5.4.380.0100.02314.12
5.4.370.0210.02014.02
5.4.360.0170.02114.16
5.4.350.0180.02114.20
5.4.340.0200.02114.06
5.4.330.0020.00911.61
5.4.320.0210.01914.16
5.4.310.0130.02414.03
5.4.300.0190.02014.11
5.4.290.0180.02014.06
5.4.280.0200.01914.15
5.4.270.0160.02314.16
5.4.260.0140.02314.15
5.4.250.0210.01814.09
5.4.240.0060.02514.06
5.4.230.0180.01914.15
5.4.220.0190.02014.19
5.4.210.0130.02514.16
5.4.200.0160.02414.17
5.4.190.0180.01914.12
5.4.180.0050.02414.07
5.4.170.0070.02214.15
5.4.160.0100.01914.01
5.4.150.0070.02014.11
5.4.140.0050.02313.20
5.4.130.0100.01713.18
5.4.120.0100.01713.18
5.4.110.0030.02313.29
5.4.100.0100.01813.26
5.4.90.0140.02113.14
5.4.80.0210.01513.28
5.4.70.0140.02213.16
5.4.60.0170.02013.22
5.4.50.0220.01513.25
5.4.40.0180.01813.27
5.4.30.0140.01813.13
5.4.20.0150.02213.13
5.4.10.0190.02013.13
5.4.00.0160.01813.04

preferences:
73.98 ms | 400 KiB | 5 Q