3v4l.org

run code in 300+ PHP versions simultaneously
<?php $fp = fopen('php://stdin', 'r'); $json = @json_encode(array('a' => 'foo', 'b' => $fp)); var_dump($json, json_last_error_msg());

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)
8.3.40.0040.01118.84
8.3.30.0140.00018.68
8.3.20.0080.00018.51
8.3.10.0030.00521.09
8.3.00.0090.00021.89
8.2.170.0110.00422.96
8.2.160.0140.00720.52
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0070.00021.04
8.2.110.0030.00620.54
8.2.100.0110.00017.84
8.2.90.0080.00019.31
8.2.80.0030.00617.97
8.2.70.0000.00817.63
8.2.60.0050.00318.03
8.2.50.0040.00418.07
8.2.40.0030.00518.16
8.2.30.0040.00419.88
8.2.20.0040.00417.59
8.2.10.0000.00717.66
8.2.00.0030.00617.79
8.1.270.0000.00723.99
8.1.260.0000.00726.35
8.1.250.0060.00328.09
8.1.240.0030.00622.59
8.1.230.0070.00421.04
8.1.220.0040.00418.77
8.1.210.0080.00018.84
8.1.200.0040.00417.23
8.1.190.0040.00417.53
8.1.180.0000.00818.10
8.1.170.0080.00018.72
8.1.160.0040.00418.93
8.1.150.0000.00718.63
8.1.140.0080.00017.43
8.1.130.0030.00317.80
8.1.120.0070.00017.47
8.1.110.0000.00817.35
8.1.100.0000.00717.50
8.1.90.0000.00817.35
8.1.80.0000.00717.29
8.1.70.0000.00717.43
8.1.60.0110.00017.46
8.1.50.0070.00017.51
8.1.40.0000.00717.46
8.1.30.0040.00417.65
8.1.20.0030.00517.60
8.1.10.0040.00417.59
8.1.00.0070.00317.43
8.0.300.0000.00720.02
8.0.290.0000.00717.16
8.0.280.0070.00018.43
8.0.270.0040.00417.36
8.0.260.0030.00316.91
8.0.250.0030.00317.04
8.0.240.0060.00316.88
8.0.230.0030.00317.01
8.0.220.0000.00716.93
8.0.210.0040.00416.94
8.0.200.0040.00417.02
8.0.190.0070.00016.98
8.0.180.0040.00416.96
8.0.170.0000.00916.97
8.0.160.0070.00016.93
8.0.150.0060.00316.78
8.0.140.0070.00016.94
8.0.130.0030.00313.37
8.0.120.0080.00016.80
8.0.110.0040.00416.81
8.0.100.0000.00716.90
8.0.90.0000.00716.82
8.0.80.0070.01016.96
8.0.70.0040.00416.95
8.0.60.0000.00816.81
8.0.50.0000.00716.83
8.0.30.0080.01416.91
8.0.20.0110.00717.40
8.0.10.0000.00716.98
8.0.00.0120.00816.61
7.4.330.0000.00514.89
7.4.320.0070.00016.60
7.4.300.0000.00616.53
7.4.290.0000.00716.45
7.4.280.0030.00416.59
7.4.270.0000.00616.56
7.4.260.0030.00313.25
7.4.250.0000.00816.47
7.4.240.0040.00416.60
7.4.230.0040.00416.62
7.4.220.0140.00416.41
7.4.210.0080.00916.56
7.4.200.0080.00016.39
7.4.190.0000.00716.72
7.4.160.0060.00916.37
7.4.150.0070.01017.40
7.4.140.0040.01917.86
7.4.130.0080.00816.57
7.4.120.0080.00816.50
7.4.110.0070.01016.40
7.4.100.0100.00616.71
7.4.90.0140.00316.65
7.4.80.0060.01019.37
7.4.70.0130.00716.37
7.4.60.0000.01616.56
7.4.50.0030.00616.29
7.4.40.0000.01422.27
7.4.30.0080.00816.41
7.4.00.0080.01014.97
7.3.330.0050.00013.21
7.3.320.0070.00013.21
7.3.310.0070.00016.36
7.3.300.0070.00016.32
7.3.290.0090.00916.37
7.3.280.0080.01016.32
7.3.270.0070.01017.40
7.3.260.0100.00618.24
7.3.250.0090.00916.42
7.3.240.0130.00316.54
7.3.230.0070.01316.39
7.3.210.0120.00616.27
7.3.200.0080.00919.39
7.3.190.0090.00916.44
7.3.180.0120.00316.61
7.3.170.0080.00816.39
7.3.160.0070.01416.20
7.3.120.0070.01014.68
7.3.110.0060.01314.69
7.3.100.0040.01414.63
7.3.90.0120.00314.58
7.3.80.0040.01014.66
7.3.70.0000.01014.79
7.3.60.0100.00314.91
7.3.50.0030.00714.77
7.3.40.0070.00314.85
7.3.30.0060.00614.62
7.3.20.0130.00316.64
7.3.10.0090.00516.30
7.3.00.0070.00516.47
7.2.330.0140.00416.63
7.2.320.0080.01116.47
7.2.310.0100.01316.54
7.2.300.0120.00916.25
7.2.290.0060.01016.41
7.2.250.0060.01314.67
7.2.240.0100.01014.65
7.2.230.0040.01114.58
7.2.220.0130.00014.92
7.2.210.0070.00314.71
7.2.200.0120.00314.84
7.2.190.0130.00315.01
7.2.180.0000.00914.92
7.2.170.0000.00815.01
7.2.160.0070.00715.07
7.2.150.0060.00616.79
7.2.140.0110.00416.92
7.2.130.0040.01216.62
7.2.120.0070.01016.61
7.2.110.0080.00616.68
7.2.100.0040.00916.57
7.2.90.0120.00616.49
7.2.80.0070.00716.68
7.2.70.0110.00816.76
7.2.60.0060.00916.79
7.2.50.0120.00616.60
7.2.40.0100.00816.46
7.2.30.0140.00516.84
7.2.20.0070.01116.71
7.2.10.0080.01016.70
7.2.00.0050.01517.35
7.1.330.0070.01015.77
7.1.320.0030.01015.68
7.1.310.0060.00315.89
7.1.300.0050.00315.85
7.1.290.0030.01315.84
7.1.280.0050.00315.86
7.1.270.0000.01115.91
7.1.260.0090.00615.74
7.1.250.0100.00215.70
7.1.240.0110.00015.60
7.1.230.0070.00715.56
7.1.220.0070.00715.71
7.1.210.0030.00915.79
7.1.200.0030.01015.55
7.1.190.0030.01015.78
7.1.180.0040.00815.80
7.1.170.0000.01115.78
7.1.160.0000.01715.94
7.1.150.0080.00615.73
7.1.140.0000.01115.74
7.1.130.0040.00415.55
7.1.120.0040.01115.83
7.1.110.0050.00315.83
7.1.100.0070.00516.83
7.1.90.0090.00615.74
7.1.80.0030.01415.55
7.1.70.0070.00416.43
7.1.60.0100.01017.48
7.1.50.0070.01316.29
7.1.40.0060.00915.68
7.1.30.0040.00715.73
7.1.20.0030.00715.79
7.1.10.0100.00015.88
7.1.00.0070.03818.96
7.0.330.0030.00915.50
7.0.320.0070.00715.46
7.0.310.0070.00715.20
7.0.300.0090.00315.36
7.0.290.0000.01315.44
7.0.280.0000.01415.46
7.0.270.0040.01115.40
7.0.260.0000.01315.48
7.0.250.0110.00315.43
7.0.240.0060.00615.57
7.0.230.0070.00715.38
7.0.220.0040.01115.41
7.0.210.0000.01115.52
7.0.200.0050.00516.04
7.0.190.0070.00715.50
7.0.180.0000.01215.45
7.0.170.0030.01315.55
7.0.160.0030.00715.37
7.0.150.0050.00315.39
7.0.140.0090.03618.75
7.0.130.0070.00715.06
7.0.120.0030.00615.46
7.0.110.0080.00015.43
7.0.100.0080.00315.21
7.0.90.0350.04617.64
7.0.80.0370.03717.63
7.0.70.0280.03417.73
7.0.60.0230.03917.56
7.0.50.0350.04017.94
7.0.40.0050.03316.86
7.0.30.0090.03416.69
7.0.20.0040.04016.69
7.0.10.0110.02216.88
7.0.00.0100.03616.67
5.6.400.0040.01114.26
5.6.390.0060.00913.95
5.6.380.0060.00614.19
5.6.370.0100.00714.31
5.6.360.0060.00814.12
5.6.350.0060.01014.59
5.6.340.0000.00914.56
5.6.330.0070.00714.38
5.6.320.0040.00414.04
5.6.310.0060.00614.20
5.6.300.0080.00613.86
5.6.290.0040.01114.13
5.6.280.0030.04217.66
5.6.270.0070.00714.28
5.6.260.0020.01014.32
5.6.250.0040.00814.09
5.6.240.0160.03617.46
5.6.230.0100.03917.36
5.6.220.0050.04317.40
5.6.210.0130.03517.24
5.6.200.0090.04217.69
5.6.190.0030.04717.65
5.6.180.0090.04717.75
5.6.170.0040.02617.69
5.6.160.0120.04217.75
5.6.150.0050.04717.75
5.6.140.0080.04317.74
5.6.130.0030.04517.68
5.6.120.0030.03817.56
5.6.110.0070.02317.65
5.6.100.0050.04817.52
5.6.90.0030.03717.67
5.6.80.0100.02017.15
5.6.70.0090.01917.30
5.6.60.0090.04217.21
5.6.50.0070.03517.49
5.6.40.0050.02817.19
5.6.30.0050.04217.41
5.6.20.0150.03517.29
5.6.10.0070.04217.20
5.6.00.0090.03017.25
5.5.380.0030.04117.35
5.5.370.0050.03017.15
5.5.360.0070.02817.40
5.5.350.0060.02817.29
5.5.340.0090.02217.21
5.5.330.0120.04217.60
5.5.320.0080.03117.52
5.5.310.0120.04017.61
5.5.300.0010.04617.56
5.5.290.0130.03717.53
5.5.280.0080.04117.46
5.5.270.0080.04317.50
5.5.260.0050.04717.56
5.5.250.0050.03017.46
5.5.240.0050.03817.20
5.5.230.0110.03517.12
5.5.220.0080.03817.30
5.5.210.0050.04417.15
5.5.200.0060.03117.18
5.5.190.0050.04517.13
5.5.180.0080.03417.21
5.5.170.0100.00714.05
5.5.160.0090.02317.16
5.5.150.0070.02817.04
5.5.140.0050.04717.13
5.5.130.0020.03717.20
5.5.120.0000.02717.19
5.5.110.0030.03617.12
5.5.100.0100.02717.02
5.5.90.0080.02816.95
5.5.80.0070.03916.98
5.5.70.0060.02317.24
5.5.60.0070.03917.20
5.5.50.0050.03116.96
5.5.40.0100.03916.87
5.5.30.0060.02317.03
5.5.20.0070.03017.19
5.5.10.0050.04517.13
5.5.00.0120.03917.01
5.4.450.0080.03815.60
5.4.440.0030.04315.61
5.4.430.0030.03315.61
5.4.420.0030.04015.47
5.4.410.0050.04115.58
5.4.400.0050.02515.42
5.4.390.0030.02415.37
5.4.380.0070.03615.48
5.4.370.0050.02615.48
5.4.360.0100.03615.41
5.4.350.0060.02615.50
5.4.340.0070.03715.45
5.4.330.0000.00811.85
5.4.320.0070.04215.47
5.4.310.0080.02315.45
5.4.300.0050.02715.46
5.4.290.0040.02915.45
5.4.280.0020.04415.49
5.4.270.0020.04815.54
5.4.260.0080.03815.48
5.4.250.0020.02515.48
5.4.240.0050.02815.52
5.4.230.0050.04115.46
5.4.220.0070.04015.48
5.4.210.0050.04215.33
5.4.200.0130.01815.48
5.4.190.0070.02315.48
5.4.180.0030.03415.49
5.4.170.0050.04315.43
5.4.160.0080.03015.38
5.4.150.0070.04215.47
5.4.140.0070.02014.04
5.4.130.0050.04214.09
5.4.120.0080.03514.09
5.4.110.0080.03014.05
5.4.100.0080.03514.10
5.4.90.0060.02314.13
5.4.80.0020.03214.03
5.4.70.0050.04214.02
5.4.60.0030.04314.12
5.4.50.0020.04414.11
5.4.40.0080.03514.14
5.4.30.0030.02214.04
5.4.20.0000.02914.02
5.4.10.0040.02714.10
5.4.00.0050.03213.76
5.3.290.0080.03813.22
5.3.280.0080.03513.21
5.3.270.0030.02813.19
5.3.260.0070.04113.14
5.3.250.0030.03113.22
5.3.240.0050.04013.22
5.3.230.0010.04313.19
5.3.220.0050.03513.21
5.3.210.0070.04013.14
5.3.200.0070.02313.16
5.3.190.0050.02313.19
5.3.180.0090.03513.17
5.3.170.0050.02513.20
5.3.160.0050.03513.17
5.3.150.0060.04313.14
5.3.140.0060.04113.19
5.3.130.0030.03613.19
5.3.120.0030.03813.19
5.3.110.0020.02913.19
5.3.100.0030.04012.93
5.3.90.0050.04012.84
5.3.80.0070.03212.90
5.3.70.0080.03512.91
5.3.60.0030.04412.80
5.3.50.0020.02712.87
5.3.40.0020.03012.78
5.3.30.0010.03312.87
5.3.20.0070.02212.76
5.3.10.0040.04012.73
5.3.00.0070.03812.72
5.2.170.0070.03311.14
5.2.160.0100.03311.19
5.2.150.0000.03711.10
5.2.140.0100.03310.97
5.2.130.0070.06310.93
5.2.120.0070.06011.02
5.2.110.0100.05710.93
5.2.100.0070.05011.11
5.2.90.0000.04711.10
5.2.80.0070.06311.02
5.2.70.0030.03011.18
5.2.60.0000.04311.11
5.2.50.0100.03010.83
5.2.40.0100.05711.03
5.2.30.0000.06310.85
5.2.20.0030.06010.80
5.2.10.0030.05310.88
5.2.00.0030.05710.77
5.1.60.0070.0309.83
5.1.50.0000.0279.98
5.1.40.0030.0539.97
5.1.30.0070.05310.19
5.1.20.0070.03310.24
5.1.10.0070.0509.91
5.1.00.0030.05310.13
5.0.50.0100.0408.38
5.0.40.0070.0208.41
5.0.30.0000.0608.29
5.0.20.0000.0478.22
5.0.10.0000.0278.25
5.0.00.0000.0338.25
4.4.90.0000.0177.26
4.4.80.0000.0237.26
4.4.70.0000.0337.26
4.4.60.0000.0377.26
4.4.50.0030.0237.26
4.4.40.0230.0307.26
4.4.30.0030.0277.26
4.4.20.0030.0337.26
4.4.10.0070.0307.26
4.4.00.0070.0507.26
4.3.110.0030.0207.26
4.3.100.0000.0237.26
4.3.90.0030.0177.26
4.3.80.0070.0507.26
4.3.70.0000.0307.26
4.3.60.0030.0337.26
4.3.50.0000.0377.26
4.3.40.0000.0477.26
4.3.30.0000.0337.26
4.3.20.0030.0307.26
4.3.10.0000.0237.26
4.3.00.0030.0337.26

preferences:
45.72 ms | 400 KiB | 5 Q