3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = ['test' => 'bar']; if (!$json = @json_encode($data)) { print "true"; } else { print "false"; }

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)
8.3.40.0100.01018.96
8.3.30.0070.00719.22
8.3.20.0000.00720.26
8.3.10.0060.00321.82
8.3.00.0080.00017.50
8.2.170.0040.01122.96
8.2.160.0070.00720.43
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0040.00421.08
8.2.110.0100.00022.16
8.2.100.0080.00417.91
8.2.90.0040.00417.75
8.2.80.0060.00318.49
8.2.70.0030.00517.75
8.2.60.0080.00017.63
8.2.50.0030.00617.93
8.2.40.0040.00419.91
8.2.30.0040.00419.24
8.2.20.0040.00417.55
8.2.10.0040.00418.16
8.2.00.0050.00317.64
8.1.270.0080.00023.68
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0100.00023.84
8.1.230.0070.00420.91
8.1.220.0060.00318.56
8.1.210.0090.00018.77
8.1.200.0050.00317.52
8.1.190.0040.00417.25
8.1.180.0080.00018.10
8.1.170.0020.00517.62
8.1.160.0040.00418.88
8.1.150.0050.00218.88
8.1.140.0000.00717.34
8.1.130.0030.00317.83
8.1.120.0030.00417.45
8.1.110.0030.00417.43
8.1.100.0070.00017.46
8.1.90.0020.00517.34
8.1.80.0070.00017.38
8.1.70.0040.00417.34
8.1.60.0040.00417.57
8.1.50.0040.00417.41
8.1.40.0030.00517.54
8.1.30.0030.00517.65
8.1.20.0040.00417.58
8.1.10.0000.00817.49
8.1.00.0050.00217.41
8.0.300.0090.00018.77
8.0.290.0040.00416.75
8.0.280.0000.00718.44
8.0.270.0000.00717.30
8.0.260.0030.00317.13
8.0.250.0030.00516.96
8.0.240.0000.00716.97
8.0.230.0080.00016.93
8.0.220.0000.00616.86
8.0.210.0050.00316.93
8.0.200.0000.00716.95
8.0.190.0000.00716.82
8.0.180.0080.00316.90
8.0.170.0040.00416.93
8.0.160.0030.00416.84
8.0.150.0000.00716.86
8.0.140.0000.00716.80
8.0.130.0000.00513.30
8.0.120.0080.00016.87
8.0.110.0070.00016.89
8.0.100.0070.00016.78
8.0.90.0000.00716.91
8.0.80.0060.00916.82
8.0.70.0000.00716.86
8.0.60.0000.00716.83
8.0.50.0040.00416.77
8.0.30.0080.01216.98
8.0.20.0130.00817.40
8.0.10.0000.00716.93
8.0.00.0060.01016.72
7.4.330.0000.00515.14
7.4.320.0030.00316.52
7.4.300.0030.00316.51
7.4.290.0050.00316.57
7.4.280.0090.00016.60
7.4.270.0000.00616.63
7.4.260.0050.00516.54
7.4.250.0070.00016.46
7.4.240.0030.00416.50
7.4.230.0030.00316.71
7.4.220.0140.00316.66
7.4.210.0070.00716.45
7.4.200.0000.00716.41
7.4.160.0080.00816.46
7.4.150.0070.01017.40
7.4.140.0060.01117.86
7.4.130.0080.00816.53
7.4.120.0020.01516.42
7.4.110.0030.02016.36
7.4.100.0100.00616.34
7.4.90.0120.00616.46
7.4.80.0140.01119.39
7.4.70.0090.00916.56
7.4.60.0090.00816.43
7.4.50.0060.00316.14
7.4.40.0030.01316.35
7.4.30.0100.00716.49
7.4.10.0040.01115.02
7.4.00.0050.01314.77
7.3.330.0000.00612.91
7.3.320.0050.00012.86
7.3.310.0030.00316.21
7.3.300.0000.00716.04
7.3.290.0070.00716.11
7.3.280.0090.00716.13
7.3.270.0070.01017.40
7.3.260.0100.01416.36
7.3.250.0140.00716.09
7.3.240.0100.00716.46
7.3.230.0050.01116.39
7.3.210.0000.01816.31
7.3.200.0040.01219.39
7.3.190.0100.00716.45
7.3.180.0080.01216.16
7.3.170.0090.00816.39
7.3.160.0100.00716.18
7.3.130.0120.00514.71
7.3.120.0070.00914.69
7.3.110.0060.01214.50
7.3.100.0100.00414.65
7.3.90.0050.00914.80
7.3.80.0070.00514.83
7.3.70.0030.01214.74
7.3.60.0050.00714.60
7.3.50.0060.00514.67
7.3.40.0070.00714.44
7.3.30.0030.01014.63
7.3.20.0040.00916.44
7.3.10.0070.00516.59
7.3.00.0070.00716.59
7.2.330.0090.00916.36
7.2.320.0030.01316.44
7.2.310.0070.01116.29
7.2.300.0070.01016.65
7.2.290.0030.01316.52
7.2.260.0090.01014.92
7.2.250.0070.01115.04
7.2.240.0020.01414.80
7.2.230.0090.00715.10
7.2.220.0060.00914.88
7.2.210.0080.00414.86
7.2.200.0070.00515.00
7.2.190.0000.01314.95
7.2.180.0030.01214.97
7.2.170.0080.00714.82
7.2.160.0030.00814.85
7.2.150.0080.00716.97
7.2.140.0040.01116.89
7.2.130.0080.00316.88
7.2.120.0030.00816.70
7.2.110.0040.00716.71
7.2.100.0030.01216.93
7.2.90.0020.01116.87
7.2.80.0080.00916.90
7.2.70.0070.00716.92
7.2.60.0050.01116.80
7.2.50.0060.00916.86
7.2.40.0070.00716.93
7.2.30.0090.00616.96
7.2.20.0030.01116.84
7.2.10.0050.01016.85
7.2.00.0050.01016.98
7.1.330.0050.01015.79
7.1.320.0090.00915.48
7.1.310.0050.00815.84
7.1.300.0070.00715.44
7.1.290.0040.00715.83
7.1.280.0070.00715.51
7.1.270.0030.00715.88
7.1.260.0050.00515.55
7.1.250.0070.00415.86
7.1.240.0050.00715.78
7.1.230.0050.00915.67
7.1.220.0070.00715.74
7.1.210.0060.00415.70
7.1.200.0060.01015.68
7.1.190.0090.00915.79
7.1.180.0060.00715.59
7.1.170.0050.00815.79
7.1.160.0060.00615.71
7.1.150.0030.01015.72
7.1.140.0030.00915.79
7.1.130.0040.00615.73
7.1.120.0030.00815.78
7.1.110.0050.00615.61
7.1.100.0030.01015.82
7.1.90.0030.00815.83
7.1.80.0080.00515.65
7.1.70.0070.00416.05
7.1.60.0060.00616.88
7.1.50.0080.00716.02
7.1.40.0020.01015.46
7.1.30.0070.00515.73
7.1.20.0050.00715.73
7.1.10.0040.00715.79
7.1.00.0050.03017.88
7.0.330.0080.00715.25
7.0.320.0060.00615.26
7.0.310.0050.00715.31
7.0.300.0070.00715.30
7.0.290.0020.01215.37
7.0.280.0120.00015.43
7.0.270.0010.00815.26
7.0.260.0060.00315.10
7.0.250.0060.00515.44
7.0.240.0070.00515.43
7.0.230.0080.00515.48
7.0.220.0040.00815.38
7.0.210.0040.00915.55
7.0.200.0020.00715.71
7.0.190.0080.00515.44
7.0.180.0070.00815.46
7.0.170.0090.00315.39
7.0.160.0050.00915.12
7.0.150.0080.00415.44
7.0.140.0080.02517.49
7.0.130.0100.00215.25
7.0.120.0030.00715.30
7.0.110.0030.00815.34
7.0.100.0080.00715.30
7.0.90.0130.03016.83
7.0.80.0280.02716.75
7.0.70.0220.03016.83
7.0.60.0230.03016.89
7.0.50.0200.02517.07
7.0.40.0100.02015.59
7.0.30.0100.01915.68
7.0.20.0050.02415.56
7.0.10.0060.01815.64
7.0.00.0040.01915.64
5.6.400.0060.00314.40
5.6.390.0060.00514.35
5.6.380.0020.01214.34
5.6.370.0050.01114.45
5.6.360.0040.00714.14
5.6.350.0060.00714.59
5.6.340.0020.01114.32
5.6.330.0030.01014.24
5.6.320.0030.01114.45
5.6.310.0070.00414.32
5.6.300.0040.00714.19
5.6.290.0030.00814.25
5.6.280.0060.02816.55
5.6.270.0060.00514.42
5.6.260.0100.00414.38
5.6.250.0060.00814.59
5.6.240.0060.02116.50
5.6.230.0060.03316.38
5.6.220.0050.02816.44
5.6.210.0050.02316.38
5.6.200.0050.02916.39
5.6.190.0110.02616.52
5.6.180.0040.02216.56
5.6.170.0060.01716.51
5.6.160.0070.01616.51
5.6.150.0020.01816.53
5.6.140.0040.02616.51
5.6.130.0010.02316.48
5.6.120.0060.01816.51
5.6.110.0070.01816.50
5.6.100.0040.02616.58
5.6.90.0020.02216.48
5.6.80.0050.01916.25
5.6.70.0040.01616.39
5.6.60.0040.01816.34
5.6.50.0060.01616.32
5.6.40.0050.01616.24
5.6.30.0070.01716.27
5.6.20.0030.02616.29
5.6.10.0030.01916.34
5.6.00.0090.01716.26
5.5.380.0070.02816.30
5.5.370.0060.03216.31
5.5.360.0050.01916.32
5.5.350.0050.03116.35
5.5.340.0060.03116.40
5.5.330.0030.03616.51
5.5.320.0090.01516.38
5.5.310.0060.02716.49
5.5.300.0040.01816.47
5.5.290.0040.02116.43
5.5.280.0080.01516.49
5.5.270.0070.01416.50
5.5.260.0050.03116.48
5.5.250.0050.02216.32
5.5.240.0020.02216.07
5.5.230.0060.01816.22
5.5.220.0070.03116.13
5.5.210.0080.01416.25
5.5.200.0040.02316.22
5.5.190.0080.02616.08
5.5.180.0070.01816.18
5.5.170.0030.01014.03
5.5.160.0040.01816.11
5.5.150.0060.02516.24
5.5.140.0050.01816.13
5.5.130.0070.01716.12
5.5.120.0020.02116.19
5.5.110.0040.01916.28
5.5.100.0060.01615.99
5.5.90.0060.01516.11
5.5.80.0060.01616.07
5.5.70.0020.02016.13
5.5.60.0060.01616.19
5.5.50.0030.02716.09
5.5.40.0020.02116.11
5.5.30.0050.02316.08
5.5.20.0060.02916.14
5.5.10.0070.02615.96
5.5.00.0040.03316.17
5.4.450.0010.02015.05
5.4.440.0020.02015.04
5.4.430.0060.01914.96
5.4.420.0080.02515.00
5.4.410.0070.02314.99
5.4.400.0010.01914.97
5.4.390.0040.02314.85
5.4.380.0040.01514.91
5.4.370.0070.01514.85
5.4.360.0070.01214.95
5.4.350.0060.01614.94
5.4.340.0010.01614.89
5.4.330.0040.00612.87
5.4.320.0030.01514.95
5.4.310.0060.01614.88
5.4.300.0040.01614.88
5.4.290.0080.02014.90
5.4.280.0090.01214.95
5.4.270.0030.01614.93
5.4.260.0060.01214.85
5.4.250.0050.01514.92
5.4.240.0020.01614.84
5.4.230.0070.01714.88
5.4.220.0040.01614.94
5.4.210.0060.01414.84
5.4.200.0010.01714.89
5.4.190.0050.01314.92
5.4.180.0060.02614.95
5.4.170.0060.02814.88
5.4.160.0090.02514.98
5.4.150.0040.02814.91
5.4.140.0030.02414.02
5.4.130.0070.02814.02
5.4.120.0080.02413.98
5.4.110.0070.02514.06
5.4.100.0030.02913.99
5.4.90.0040.02014.00
5.4.80.0030.02913.99
5.4.70.0070.02814.02
5.4.60.0060.02713.98
5.4.50.0040.03114.04
5.4.40.0040.02814.06
5.4.30.0050.01814.02
5.4.20.0090.02514.01
5.4.10.0070.02614.05
5.4.00.0040.02313.73
5.3.290.0030.04014.60
5.3.280.0030.03714.60
5.3.270.0030.05314.61
5.3.260.0100.07714.60
5.3.250.0030.08014.52
5.3.240.0070.07714.56
5.3.230.0100.07714.59
5.3.220.0100.07014.39
5.3.210.0130.07714.43
5.3.200.0100.07314.56
5.3.190.0030.05314.56
5.3.180.0070.07014.43
5.3.170.0030.07314.50
5.3.160.0130.06014.38
5.3.150.0170.07314.43
5.3.140.0070.06314.46
5.3.130.0100.07314.55
5.3.120.0030.07314.49
5.3.110.0170.06714.46
5.3.100.0100.07314.00
5.3.90.0100.07013.97
5.3.80.0100.06714.01
5.3.70.0000.08013.92
5.3.60.0100.07314.01
5.3.50.0070.06713.80
5.3.40.0070.05313.89
5.3.30.0070.07713.90
5.3.20.0070.05013.67
5.3.10.0030.07013.62
5.3.00.0070.05713.60
5.2.170.0030.06010.95
5.2.160.0030.06310.95
5.2.150.0070.06311.02
5.2.140.0070.04311.06
5.2.130.0070.04711.02
5.2.120.0000.06311.14
5.2.110.0100.05011.10
5.2.100.0070.05710.94
5.2.90.0170.04310.95
5.2.80.0170.03011.05
5.2.70.0130.05711.14
5.2.60.0100.05710.89
5.2.50.0030.06310.84
5.2.40.0030.06711.06
5.2.30.0000.03311.00
5.2.20.0000.03011.02
5.2.10.0030.06310.92
5.2.00.0030.06310.77
5.1.60.0030.03310.00
5.1.50.0070.0509.83
5.1.40.0000.0439.97
5.1.30.0030.04310.24
5.1.20.0030.07310.25
5.1.10.0070.05310.08
5.1.00.0030.05310.13
5.0.50.0070.0308.59
5.0.40.0070.0438.41
5.0.30.0030.0508.10
5.0.20.0000.0338.25
5.0.10.0000.0378.15
5.0.00.0070.0578.14
4.4.90.0030.0337.39
4.4.80.0000.0377.39
4.4.70.0000.0407.39
4.4.60.0000.0307.39
4.4.50.0000.0377.39
4.4.40.0100.0437.39
4.4.30.0000.0377.39
4.4.20.0100.0277.39
4.4.10.0030.0337.39
4.4.00.0030.0307.39
4.3.110.0000.0377.39
4.3.100.0000.0177.39
4.3.90.0100.0307.39
4.3.80.0030.0507.39
4.3.70.0000.0337.39
4.3.60.0000.0337.39
4.3.50.0030.0377.39
4.3.40.0000.0407.39
4.3.30.0030.0377.39
4.3.20.0030.0337.39
4.3.10.0070.0307.39
4.3.00.0000.0377.39

preferences:
50.13 ms | 400 KiB | 5 Q