3v4l.org

run code in 300+ PHP versions simultaneously
<?php function encode($value, int $flags = 0) { $flags = JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | ($flags & 0) | (defined('JSON_PRESERVE_ZERO_FRACTION') ? JSON_PRESERVE_ZERO_FRACTION : 0); // since PHP 5.6.6 & PECL JSON-C 1.3.7 $json = json_encode($value, $flags); if ($error = json_last_error()) { throw new Exception(json_last_error_msg(), $error); } if (PHP_VERSION_ID < 70100) { $json = str_replace(["\u{2028}", "\u{2029}"], ['\u2028', '\u2029'], $json); } return $json; } echo encode((object)[1 => 2]);

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)
8.3.70.0110.00418.29
8.3.60.0070.01016.75
8.3.50.0130.00518.15
8.3.40.0090.00918.70
8.3.30.0090.00618.85
8.3.20.0070.00020.38
8.3.10.0080.00021.95
8.3.00.0000.00823.61
8.2.190.0030.01316.63
8.2.180.0040.01116.38
8.2.170.0070.00722.96
8.2.160.0090.00620.44
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00422.27
8.2.120.0040.00426.35
8.2.110.0070.00320.82
8.2.100.0060.00617.91
8.2.90.0040.00417.97
8.2.80.0040.00418.04
8.2.70.0000.00817.80
8.2.60.0040.00418.04
8.2.50.0040.00418.22
8.2.40.0040.00420.65
8.2.30.0020.00519.18
8.2.20.0050.00317.95
8.2.10.0000.00717.98
8.2.00.0000.00717.87
8.1.280.0140.00325.92
8.1.270.0080.00020.27
8.1.260.0070.00026.35
8.1.250.0050.00228.09
8.1.240.0090.00023.92
8.1.230.0110.00022.68
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0080.00017.23
8.1.190.0040.00417.23
8.1.180.0060.00318.10
8.1.170.0040.00418.54
8.1.160.0000.00718.86
8.1.150.0040.00420.06
8.1.140.0040.00417.38
8.1.130.0000.00719.00
8.1.120.0030.00417.30
8.1.110.0050.00317.41
8.1.100.0080.00017.41
8.1.90.0000.00717.38
8.1.80.0000.00817.29
8.1.70.0050.00317.41
8.1.60.0000.00817.42
8.1.50.0030.00617.54
8.1.40.0000.00817.42
8.1.30.0040.00417.66
8.1.20.0040.00417.66
8.1.10.0000.00717.53
8.1.00.0030.00617.33
8.0.300.0030.00521.57
8.0.290.0000.00916.75
8.0.280.0030.00318.36
8.0.270.0000.00717.25
8.0.260.0000.01018.42
8.0.250.0000.00817.01
8.0.240.0040.00416.92
8.0.230.0060.00317.01
8.0.220.0040.00416.78
8.0.210.0070.00016.81
8.0.200.0060.00016.96
8.0.190.0030.00616.86
8.0.180.0020.00516.94
8.0.170.0050.00316.92
8.0.160.0080.00016.91
8.0.150.0040.00416.85
8.0.140.0000.00816.78
8.0.130.0080.00013.21
8.0.120.0040.00416.88
8.0.110.0000.00716.82
8.0.100.0030.00516.84
8.0.90.0070.00016.84
8.0.80.0190.00516.80
8.0.70.0030.00516.80
8.0.60.0000.00816.88
8.0.50.0000.00716.78
8.0.30.0050.01517.24
8.0.20.0130.00617.40
8.0.10.0080.00016.86
8.0.00.0100.01316.89
7.4.330.0000.00415.55
7.4.320.0000.00716.45
7.4.300.0030.00316.49
7.4.290.0030.00716.64
7.4.280.0030.00516.53
7.4.270.0030.00316.65
7.4.260.0000.00816.46
7.4.250.0070.00016.54
7.4.240.0030.00316.55
7.4.230.0070.00016.69
7.4.220.0100.01016.48
7.4.210.0030.01216.52
7.4.200.0040.00316.62
7.4.160.0070.00916.43
7.4.150.0070.01517.40
7.4.140.0120.00717.86
7.4.130.0120.00616.34
7.4.120.0100.01016.48
7.4.110.0100.01316.66
7.4.100.0090.00916.57
7.4.90.0170.00716.67
7.4.80.0050.01119.39
7.4.70.0120.01216.46
7.4.60.0030.01216.41
7.4.50.0040.01116.57
7.4.40.0080.01216.43
7.4.30.0090.00616.60
7.4.00.0060.00614.95
7.3.330.0000.00713.22
7.3.320.0000.00513.18
7.3.310.0000.00716.20
7.3.300.0000.00616.22
7.3.290.0080.00616.33
7.3.280.0050.01116.35
7.3.270.0130.00617.40
7.3.260.0080.01016.41
7.3.250.0130.00416.42
7.3.240.0080.01016.46
7.3.230.0100.00716.47
7.3.210.0100.00616.29
7.3.200.0070.01016.50
7.3.190.0060.00916.50
7.3.180.0100.00716.38
7.3.170.0110.01216.58
7.3.160.0090.00616.54
7.3.10.0040.00816.66
7.3.00.0020.01016.46
7.2.330.0070.01016.70
7.2.320.0130.00716.41
7.2.310.0070.01016.41
7.2.300.0110.00716.63
7.2.290.0100.00716.70
7.2.130.0080.00516.93
7.2.120.0070.00616.76
7.2.110.0050.00716.81
7.2.100.0060.00716.77
7.2.90.0090.00416.80
7.2.80.0070.00516.82
7.2.70.0070.00716.82
7.2.60.0090.00616.87
7.2.50.0050.00716.83
7.2.40.0060.00716.96
7.2.30.0050.00916.80
7.2.20.0100.00516.79
7.2.10.0050.00816.75
7.2.00.0080.00716.91
7.1.250.0050.00515.82
7.1.240.0050.00815.76
7.1.230.0000.01215.74
7.1.220.0030.01015.65
7.1.210.0070.00615.79
7.1.200.0050.00615.52
7.1.190.0070.00615.78
7.1.180.0050.00815.59
7.1.170.0040.00915.75
7.1.160.0040.00915.68
7.1.150.0080.00615.62
7.1.140.0070.00515.86
7.1.130.0080.00615.77
7.1.120.0060.00615.63
7.1.110.0080.00715.72
7.1.100.0820.00815.76
7.1.90.0080.00615.83
7.1.80.0140.00815.74
7.1.70.0060.00715.69
7.1.60.0070.01220.21
7.1.50.1100.00619.95
7.1.40.1240.00919.93
7.1.30.0190.00920.05
7.1.20.0230.00919.85
7.1.10.0700.00715.44
7.1.00.0230.00515.41
7.0.330.0060.00715.34
7.0.320.0050.00715.26
7.0.310.0000.01115.18
7.0.300.0040.00815.27
7.0.290.0040.01015.26
7.0.280.0010.01015.27
7.0.270.0040.00715.27
7.0.260.0100.00315.14
7.0.250.0040.00815.24
7.0.240.0830.00515.45
7.0.230.0070.00715.55
7.0.220.0080.00915.43
7.0.210.0070.00515.11
7.0.200.0050.00715.09
7.0.190.0040.00915.11
7.0.180.0180.00515.10
7.0.170.0210.00815.05
7.0.160.0050.01015.20
7.0.150.0120.00715.19
7.0.140.0690.01215.13
7.0.130.0060.00915.24
7.0.120.0530.00615.08
7.0.110.0040.00815.02
7.0.100.0670.00715.00
7.0.90.0680.00515.07
7.0.80.0740.00615.25
7.0.70.1000.00615.09
7.0.60.0650.00515.06
7.0.50.0630.00515.17
7.0.40.0590.00613.63
7.0.30.0560.00813.83
7.0.20.0840.00613.65
7.0.10.0730.01113.60
7.0.00.0840.01013.67
5.6.380.0080.00414.09
5.6.370.0060.00814.09
5.6.360.0020.01114.02
5.6.350.0070.00414.12
5.6.340.0090.00414.14
5.6.330.0050.00613.96
5.6.320.0030.00914.04
5.6.310.0070.00413.89
5.6.300.0100.01615.91
5.6.290.0070.02015.71
5.6.280.0110.02215.66
5.6.270.0060.02215.85
5.6.260.0040.02015.82
5.6.250.0050.02215.63
5.6.240.0060.02315.76
5.6.230.0090.02415.70
5.6.220.0080.02515.74
5.6.210.0060.01915.73
5.6.200.0030.02215.75
5.6.190.0050.02115.72
5.6.180.0070.02615.69
5.6.170.0070.02115.84
5.6.160.0060.02215.63
5.6.150.0050.02015.67
5.6.140.0050.02515.85
5.6.130.0060.02015.71
5.6.120.0090.01815.65
5.6.110.0110.02015.52
5.6.100.0070.02115.64
5.6.90.0050.02515.77
5.6.80.0080.02015.42
5.6.70.0080.01715.56
5.6.60.0120.01715.57
5.6.50.0070.02015.60
5.6.40.0050.02015.47
5.6.30.0110.01515.51
5.6.20.0110.02115.44
5.6.10.0070.02315.48
5.6.00.0100.02115.52
5.5.380.0050.01912.64
5.5.370.0050.02012.59
5.5.360.0060.01812.59
5.5.350.0060.01812.58
5.5.340.0060.01712.74
5.5.330.0070.01512.78
5.5.320.0080.02312.80
5.5.310.0060.02512.75
5.5.300.0050.01812.77
5.5.290.0090.01612.71
5.5.280.0040.02112.76
5.5.270.0100.01912.73
5.5.260.0060.02412.73
5.5.250.0050.01812.64
5.5.240.0060.02012.56
5.5.230.0070.02012.59
5.5.220.0110.01712.57
5.5.210.0040.02012.55
5.5.200.0050.02212.58
5.5.190.0070.02112.47
5.5.180.0070.02312.56
5.5.170.0050.00610.99
5.5.160.0050.02312.63
5.5.150.0030.01812.54
5.5.140.0080.01512.55
5.5.130.0090.01712.52
5.5.120.0050.01912.51
5.5.110.0070.01712.47
5.5.100.0060.01912.53
5.5.90.0040.01812.49
5.5.80.0090.01412.66
5.5.70.0040.02012.56
5.5.60.0090.01812.50
5.5.50.0060.02012.47
5.5.40.0070.02112.57
5.5.30.0060.01812.58
5.5.20.0060.01812.59
5.5.10.0080.01612.39
5.5.00.0030.02312.43
5.4.450.0070.01813.02
5.4.440.0070.01813.10
5.4.430.0070.02313.06
5.4.420.0090.02113.10
5.4.410.0050.01813.03
5.4.400.0080.01713.00
5.4.390.0060.02013.03
5.4.380.0070.02212.97
5.4.370.0080.01612.92
5.4.360.0080.01612.98
5.4.350.0040.02613.03
5.4.340.0080.02113.04
5.4.330.0040.00511.01
5.4.320.0070.01912.96
5.4.310.0060.01512.95
5.4.300.0040.02312.94
5.4.290.0050.01712.95
5.4.280.0070.01612.89
5.4.270.0110.01112.93
5.4.260.0070.01612.93
5.4.250.0060.01613.02
5.4.240.0060.02012.91
5.4.230.0040.01912.85
5.4.220.0060.02312.99
5.4.210.0070.02012.92
5.4.200.0060.02112.92
5.4.190.0070.01712.97
5.4.180.0040.02112.91
5.4.170.0060.02112.93
5.4.160.0060.01612.96
5.4.150.0050.02012.97
5.4.140.0070.02212.36
5.4.130.0050.02212.32
5.4.120.0050.02312.25
5.4.110.0040.02512.44
5.4.100.0050.01912.25
5.4.90.0050.02112.25
5.4.80.0040.02312.45
5.4.70.0080.01512.38
5.4.60.0040.02212.38
5.4.50.0040.01712.35
5.4.40.0060.01612.32
5.4.30.0040.02112.39
5.4.20.0040.02212.40
5.4.10.0060.02312.34
5.4.00.0060.01412.12
5.3.290.0040.01911.80
5.3.280.0040.01711.82
5.3.270.0050.02411.82
5.3.260.0030.01711.73
5.3.250.0040.01711.83
5.3.240.0070.01611.78
5.3.230.0070.02011.69
5.3.220.0070.02211.73
5.3.210.0040.02311.82
5.3.200.0030.02211.68
5.3.190.0100.01311.83
5.3.180.0060.02011.83
5.3.170.0080.01811.83
5.3.160.0060.01811.86
5.3.150.0040.02011.83
5.3.140.0050.02111.77
5.3.130.0050.02011.74
5.3.120.0050.02011.79
5.3.110.0050.01611.73
5.3.100.0080.01411.65
5.3.90.0040.02311.68
5.3.80.0070.01611.62
5.3.70.0040.01811.68
5.3.60.0050.01811.62
5.3.50.0070.01811.65
5.3.40.0060.01611.60
5.3.30.0090.01411.63
5.3.20.0080.01411.57
5.3.10.0060.01611.46
5.3.00.0060.01811.54
5.2.170.0070.01610.69
5.2.160.0070.01510.67
5.2.150.0050.01310.64
5.2.140.0070.01610.66
5.2.130.0030.01610.65
5.2.120.0040.01910.71
5.2.110.0040.01610.67
5.2.100.0090.01210.62
5.2.90.0070.01310.68
5.2.80.0070.01410.61
5.2.70.0050.01510.64
5.2.60.0020.01610.62
5.2.50.0020.01610.66
5.2.40.0050.01310.64
5.2.30.0030.01510.64
5.2.20.0090.01010.65
5.2.10.0050.01410.58
5.2.00.0050.01110.53
5.1.60.0070.01010.19
5.1.50.0050.01010.12
5.1.40.0060.01010.18
5.1.30.0030.01410.30
5.1.20.0040.01510.29
5.1.10.0060.01210.23
5.1.00.0040.01310.15
5.0.50.0030.0119.79
5.0.40.0040.0109.75
5.0.30.0030.0149.71
5.0.20.0060.0079.68
5.0.10.0050.0099.67
5.0.00.0030.0139.67
4.4.90.0020.0089.41
4.4.80.0050.0099.41
4.4.70.0040.0109.41
4.4.60.0030.0099.41
4.4.50.0000.0119.41
4.4.40.0050.0109.41
4.4.30.0010.0129.41
4.4.20.0020.0099.41
4.4.10.0030.0099.41
4.4.00.0000.0149.41
4.3.110.0030.0099.41
4.3.100.0020.0099.41
4.3.90.0030.0079.41
4.3.80.0020.0129.41
4.3.70.0020.0089.41
4.3.60.0040.0079.41
4.3.50.0040.0079.41
4.3.40.0040.0109.41
4.3.30.0040.0099.41
4.3.20.0020.0099.41
4.3.10.0040.0069.41
4.3.00.0040.0089.41

preferences:
19.9 ms | 401 KiB | 5 Q