3v4l.org

run code in 300+ PHP versions simultaneously
<?php class B { public function __toString() { return 'b'; } } $a = 'a'; $b = new B(); $c = $a . $b;

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)
8.3.70.0100.00618.18
8.3.60.0090.00918.55
8.3.50.0090.00922.11
8.3.40.0140.00018.65
8.3.30.0160.00618.59
8.3.20.0040.00418.60
8.3.10.0070.00021.09
8.3.00.0040.00421.77
8.2.180.0070.01116.35
8.2.170.0070.01022.96
8.2.160.0110.00420.35
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00319.36
8.2.110.0040.00420.25
8.2.100.0070.00417.72
8.2.90.0060.00319.05
8.2.80.0080.00017.97
8.2.70.0040.00417.63
8.2.60.0000.00918.04
8.2.50.0040.00418.07
8.2.40.0100.00018.16
8.2.30.0040.00419.82
8.2.20.0000.00817.57
8.2.10.0050.00217.79
8.2.00.0030.00517.69
8.1.280.0230.00025.92
8.1.270.0070.00023.99
8.1.260.0120.00626.35
8.1.250.0080.00028.09
8.1.240.0000.00922.42
8.1.230.0000.01120.88
8.1.220.0000.00818.77
8.1.210.0000.00818.97
8.1.200.0000.00917.23
8.1.190.0040.00417.53
8.1.180.0030.00618.10
8.1.170.0080.00018.59
8.1.160.0000.00818.94
8.1.150.0070.00318.55
8.1.140.0020.00517.48
8.1.130.0030.00317.74
8.1.120.0000.00717.48
8.1.110.0040.00417.39
8.1.100.0000.00717.46
8.1.90.0070.00017.42
8.1.80.0030.00517.42
8.1.70.0000.00717.46
8.1.60.0040.00417.61
8.1.50.0030.00517.49
8.1.40.0000.00717.54
8.1.30.0000.00717.66
8.1.20.0050.00317.70
8.1.10.0000.00717.48
8.1.00.0030.00517.55
8.0.300.0040.00419.93
8.0.290.0030.00317.04
8.0.280.0050.00318.32
8.0.270.0030.00317.18
8.0.260.0000.00718.36
8.0.250.0040.00417.02
8.0.240.0000.00716.83
8.0.230.0030.00316.99
8.0.220.0000.00716.82
8.0.210.0000.00816.84
8.0.200.0030.00516.91
8.0.190.0040.00417.04
8.0.180.0040.00416.81
8.0.170.0030.00416.95
8.0.160.0000.00716.83
8.0.150.0080.00016.79
8.0.140.0030.00316.82
8.0.130.0000.00613.29
8.0.120.0040.00416.86
8.0.110.0070.00016.88
8.0.100.0000.00716.84
8.0.90.0070.00016.81
8.0.80.0090.00616.88
8.0.70.0080.00016.86
8.0.60.0050.00316.96
8.0.50.0000.00716.96
8.0.30.0130.00616.97
8.0.20.0080.01117.40
8.0.10.0000.00816.87
8.0.00.0030.01516.82
7.4.330.0050.00013.43
7.4.320.0040.00416.54
7.4.300.0060.00016.57
7.4.290.0040.00416.57
7.4.280.0040.00416.60
7.4.270.0000.00716.50
7.4.260.0030.00313.38
7.4.250.0050.00316.47
7.4.240.0070.00016.62
7.4.230.0000.00716.36
7.4.220.0070.00916.61
7.4.210.0100.00516.55
7.4.200.0030.00516.49
7.4.190.0030.00316.77
7.4.160.0030.01416.48
7.4.150.0100.00917.40
7.4.140.0080.00917.86
7.4.130.0050.01216.49
7.4.120.0070.00916.50
7.4.110.0120.00316.63
7.4.100.0100.00716.60
7.4.90.0180.00016.62
7.4.80.0140.00319.37
7.4.70.0100.00616.41
7.4.60.0070.01016.54
7.4.50.0050.00016.34
7.4.40.0070.01022.27
7.4.30.0000.01616.45
7.4.10.0060.00915.02
7.4.00.0090.00714.85
7.3.330.0000.00513.15
7.3.320.0020.00213.30
7.3.310.0070.00016.26
7.3.300.0060.00016.31
7.3.290.0050.01016.15
7.3.280.0070.00816.21
7.3.270.0070.01017.40
7.3.260.0090.01018.24
7.3.250.0120.00616.42
7.3.240.0100.00716.56
7.3.230.0160.00016.39
7.3.210.0060.00916.24
7.3.200.0140.00819.39
7.3.190.0090.00616.22
7.3.180.0130.00616.50
7.3.170.0080.01516.34
7.3.160.0100.00616.31
7.3.130.0040.01414.68
7.3.120.0060.00914.65
7.3.110.0080.00914.69
7.3.100.0080.00814.54
7.3.90.0050.00614.65
7.3.80.0030.01014.45
7.3.70.0060.00914.76
7.3.60.0080.00714.64
7.3.50.0060.00614.65
7.3.40.0050.01014.67
7.3.30.0050.01014.61
7.3.20.0060.00716.52
7.3.10.0080.00316.58
7.3.00.0080.00816.57
7.2.330.0060.01216.70
7.2.320.0160.00316.53
7.2.310.0060.01316.45
7.2.300.0080.00816.32
7.2.290.0060.01016.40
7.2.260.0070.00714.82
7.2.250.0100.00714.95
7.2.240.0080.00815.04
7.2.230.0040.00814.86
7.2.220.0010.01315.00
7.2.210.0050.00714.91
7.2.200.0080.00614.72
7.2.190.0050.01114.79
7.2.180.0010.01314.91
7.2.170.0030.01314.83
7.2.160.0030.00814.98
7.2.150.0110.00316.91
7.2.140.0070.01016.65
7.2.130.0100.00816.77
7.2.120.0040.00916.83
7.2.110.0030.01316.81
7.2.100.0080.00716.66
7.2.90.0060.00616.76
7.2.80.0070.00916.64
7.2.70.0090.00516.53
7.2.60.0050.00816.55
7.2.50.0070.00416.74
7.2.40.0090.00716.71
7.2.30.0050.00916.84
7.2.20.0080.00616.67
7.2.10.0040.00916.78
7.2.00.0070.00516.78
7.1.330.0050.00915.55
7.1.320.0030.01015.62
7.1.310.0040.00615.78
7.1.300.0090.00515.60
7.1.290.0060.00515.73
7.1.280.0070.00715.50
7.1.270.0040.00715.61
7.1.260.0070.00715.58
7.1.250.0110.00515.63
7.1.240.0020.00915.62
7.1.230.0070.00815.53
7.1.220.0090.00415.53
7.1.210.0080.00715.57
7.1.200.0040.01115.50
7.1.190.0080.00615.45
7.1.180.0050.00615.38
7.1.170.0060.00715.38
7.1.160.0060.00515.52
7.1.150.0060.00615.66
7.1.140.0080.00515.50
7.1.130.0050.00815.58
7.1.120.0070.00715.29
7.1.110.0080.00315.46
7.1.100.0060.00716.27
7.1.90.0080.00615.52
7.1.80.0070.00415.50
7.1.70.0080.00515.81
7.1.60.0060.00916.44
7.1.50.0050.00715.90
7.1.40.0050.00715.46
7.1.30.0070.00715.38
7.1.20.0070.00715.47
7.1.10.0050.00715.54
7.1.00.0060.01317.12
7.0.330.0090.00515.14
7.0.320.0090.00415.09
7.0.310.0060.00715.11
7.0.300.0060.00715.07
7.0.290.0050.00815.07
7.0.280.0040.00615.09
7.0.270.0060.00815.20
7.0.260.0070.00715.29
7.0.250.0060.00715.28
7.0.240.0060.00915.23
7.0.230.0090.00415.18
7.0.220.0050.00815.11
7.0.210.0080.00515.23
7.0.200.0050.00915.62
7.0.190.0060.00815.16
7.0.180.0060.00915.13
7.0.170.0090.00515.14
7.0.160.0060.00615.11
7.0.150.0060.00515.23
7.0.140.0080.02216.81
7.0.130.0050.00915.08
7.0.120.0060.00615.15
7.0.110.0050.00815.30
7.0.100.0070.00515.13
7.0.90.0070.00515.12
7.0.80.0040.01015.16
7.0.70.0030.00915.18
7.0.60.0060.02516.78
7.0.50.0060.02416.91
7.0.40.0060.02315.06
7.0.30.0080.01715.01
7.0.20.0060.02514.99
7.0.10.0020.02914.96
7.0.00.0060.02415.05
5.6.400.0030.01314.14
5.6.390.0060.00314.47
5.6.380.0050.00814.34
5.6.370.0080.00514.30
5.6.360.0060.00314.01
5.6.350.0040.00714.22
5.6.340.0010.01014.14
5.6.330.0050.00514.18
5.6.320.0040.00714.29
5.6.310.0060.00614.27
5.6.300.0060.00714.11
5.6.290.0070.00514.29
5.6.280.0070.00514.31
5.6.270.0060.00814.38
5.6.260.0080.00414.18
5.6.250.0030.00614.13
5.6.240.0050.00714.22
5.6.230.0060.00814.21
5.6.220.0070.00314.18
5.6.210.0050.02615.78
5.6.200.0060.02015.93
5.6.190.0030.02715.91
5.6.180.0080.02315.89
5.6.170.0050.02215.80
5.6.160.0040.02815.87
5.6.150.0050.02515.84
5.6.140.0050.02516.00
5.6.130.0060.02616.04
5.6.120.0020.02315.86
5.6.110.0040.02315.92
5.6.100.0060.02615.90
5.6.90.0050.01616.10
5.6.80.0060.01415.71
5.6.70.0050.02615.72
5.6.60.0060.02315.70
5.6.50.0060.02115.53
5.6.40.0070.02215.79
5.6.30.0060.02615.63
5.6.20.0030.02615.78
5.6.10.0040.02015.63
5.6.00.0010.02915.59
5.5.380.0060.00612.01
5.5.370.0060.00312.00
5.5.360.0050.00611.94
5.5.350.0060.02614.16
5.5.340.0060.02114.25
5.5.330.0060.02414.17
5.5.320.0060.02214.25
5.5.310.0040.02614.18
5.5.300.0040.02214.17
5.5.290.0030.02914.38
5.5.280.0040.02514.17
5.5.270.0050.02114.30
5.5.260.0020.02414.27
5.5.250.0060.01214.24
5.5.240.0050.02014.18
5.5.230.0050.02514.08
5.5.220.0050.01714.04
5.5.210.0070.02214.01
5.5.200.0060.02514.14
5.5.190.0040.02214.16
5.5.180.0040.02614.12
5.5.170.0050.00512.00
5.5.160.0020.02514.19
5.5.150.0050.02214.09
5.5.140.0060.01914.17
5.5.130.0060.02113.96
5.5.120.0060.02414.02
5.5.110.0030.02014.00
5.5.100.0050.02213.90
5.5.90.0030.02614.01
5.5.80.0060.02113.99
5.5.70.0030.02414.03
5.5.60.0040.02114.01
5.5.50.0020.02413.96
5.5.40.0040.01513.94
5.5.30.0040.01513.98
5.5.20.0050.02413.99
5.5.10.0090.02114.00
5.5.00.0050.02413.97
5.4.450.0050.02313.14
5.4.440.0050.02413.11
5.4.430.0030.02113.09
5.4.420.0050.02213.11
5.4.410.0050.01112.98
5.4.400.0060.02313.06
5.4.390.0050.02212.96
5.4.380.0060.02112.99
5.4.370.0030.02513.00
5.4.360.0060.02112.98
5.4.350.0060.02212.94
5.4.340.0040.01612.92
5.4.330.0010.00910.96
5.4.320.0020.02312.99
5.4.310.0030.01712.81
5.4.300.0060.01812.84
5.4.290.0050.02112.89
5.4.280.0030.02112.85
5.4.270.0020.02112.92
5.4.260.0070.01312.86
5.4.250.0040.02112.80
5.4.240.0030.02512.99
5.4.230.0040.02313.05
5.4.220.0040.01612.96
5.4.210.0020.02212.98
5.4.200.0040.02112.89
5.4.190.0030.02312.88
5.4.180.0060.02012.95
5.4.170.0040.02312.92
5.4.160.0050.01912.82
5.4.150.0040.02312.95
5.4.140.0070.01712.34
5.4.130.0020.02412.21
5.4.120.0030.02312.36
5.4.110.0040.02012.25
5.4.100.0060.01812.36
5.4.90.0020.02212.19
5.4.80.0050.02312.35
5.4.70.0030.01312.27
5.4.60.0040.01312.18
5.4.50.0030.02412.25
5.4.40.0040.02212.40
5.4.30.0010.02412.34
5.4.20.0030.02212.35
5.4.10.0040.02112.36
5.4.00.0010.02412.06
5.3.290.0010.02411.62
5.3.280.0030.02511.67
5.3.270.0030.02311.65
5.3.260.0030.02311.65
5.3.250.0030.02211.64
5.3.240.0040.02211.63
5.3.230.0050.02211.59
5.3.220.0020.02011.56
5.3.210.0030.02111.55
5.3.200.0050.02011.57
5.3.190.0050.02211.52
5.3.180.0020.02311.66
5.3.170.0030.01211.62
5.3.160.0020.02311.57
5.3.150.0030.02411.56
5.3.140.0040.02211.57
5.3.130.0040.02211.60
5.3.120.0040.02011.60
5.3.110.0030.02011.60
5.3.100.0020.02111.45
5.3.90.0030.02211.42
5.3.80.0050.02111.44
5.3.70.0070.01811.44
5.3.60.0030.01911.47
5.3.50.0050.02111.39
5.3.40.0030.02411.38
5.3.30.0010.02111.46
5.3.20.0040.01811.37
5.3.10.0020.02211.30
5.3.00.0050.02011.29
5.2.170.0030.02410.85
5.2.160.0020.02510.79
5.2.150.0040.02210.86
5.2.140.0040.01610.88
5.2.130.0010.02410.84
5.2.120.0000.02510.84
5.2.110.0020.02310.78
5.2.100.0030.02210.78
5.2.90.0020.01510.83
5.2.80.0040.01210.86
5.2.70.0040.01210.79
5.2.60.0040.01210.83
5.2.50.0050.01910.82
5.2.40.0000.01610.80
5.2.30.0030.01110.82
5.2.20.0040.01210.81
5.2.10.0020.01210.75
5.2.00.0020.00910.72
5.1.60.0030.01110.57
5.1.50.0020.00910.57
5.1.40.0010.01110.57
5.1.30.0040.00910.59
5.1.20.0010.01210.59
5.1.10.0030.01010.57
5.1.00.0030.00810.57
5.0.50.0020.00910.57
5.0.40.0010.00910.57
5.0.30.0000.01210.57
5.0.20.0040.01210.57
5.0.10.0030.00610.57
5.0.00.0000.01310.57
4.4.90.0010.01110.57
4.4.80.0030.00510.57
4.4.70.0020.00710.57
4.4.60.0010.00810.57
4.4.50.0000.00810.57
4.4.40.0020.00910.57
4.4.30.0010.00610.57
4.4.20.0010.00710.57
4.4.10.0010.00710.57
4.4.00.0010.01110.57
4.3.110.0030.00710.57
4.3.100.0020.00510.57
4.3.90.0020.00610.57
4.3.80.0010.01010.57
4.3.70.0030.00410.57
4.3.60.0010.00510.57
4.3.50.0010.00710.57
4.3.40.0020.00810.57
4.3.30.0010.00710.57
4.3.20.0010.00610.57
4.3.10.0000.00810.57
4.3.00.0010.00710.57

preferences:
51.64 ms | 401 KiB | 5 Q