3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = []; $arr['test'] = 'test'; $arr['abc'] = 'def'; echo json_encode($arr);

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)
8.3.40.0090.00618.67
8.3.30.0030.01018.82
8.3.20.0060.00320.04
8.3.10.0060.00323.66
8.3.00.0040.00419.25
8.2.170.0170.00322.96
8.2.160.0120.00320.39
8.2.150.0080.00024.18
8.2.140.0070.00324.66
8.2.130.0000.00826.16
8.2.120.0000.00821.05
8.2.110.0110.00020.39
8.2.100.0040.00718.22
8.2.90.0000.00919.28
8.2.80.0060.00317.97
8.2.70.0050.00317.38
8.2.60.0040.00417.93
8.2.50.0060.00318.07
8.2.40.0060.00318.28
8.2.30.0000.00718.11
8.2.20.0040.00417.74
8.2.10.0000.00918.05
8.2.00.0080.00017.70
8.1.270.0100.00023.97
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00623.67
8.1.230.0040.00719.08
8.1.220.0050.00317.74
8.1.210.0100.00018.77
8.1.200.0060.00617.35
8.1.190.0040.00417.13
8.1.180.0050.00318.10
8.1.170.0000.00818.41
8.1.160.0070.00021.81
8.1.150.0000.00718.79
8.1.140.0050.00219.47
8.1.130.0030.00317.78
8.1.120.0000.00717.42
8.1.110.0000.00717.42
8.1.100.0040.00717.28
8.1.90.0000.00717.29
8.1.80.0000.00717.38
8.1.70.0070.00017.30
8.1.60.0000.00917.55
8.1.50.0030.00517.34
8.1.40.0040.00417.47
8.1.30.0000.00817.54
8.1.20.0040.00417.45
8.1.10.0000.00817.45
8.1.00.0000.00717.40
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0070.00018.34
8.0.270.0030.00317.17
8.0.260.0060.00017.25
8.0.250.0030.00316.98
8.0.240.0060.00316.99
8.0.230.0030.00316.88
8.0.220.0000.00616.84
8.0.210.0040.00416.71
8.0.200.0030.00316.93
8.0.190.0060.00316.82
8.0.180.0030.00316.86
8.0.170.0040.00416.76
8.0.160.0000.00816.88
8.0.150.0070.00016.80
8.0.140.0040.00416.76
8.0.130.0050.00013.21
8.0.120.0000.00716.79
8.0.110.0000.00716.72
8.0.100.0040.00416.64
8.0.90.0000.00716.77
8.0.80.0040.01316.71
8.0.70.0030.00416.64
8.0.60.0050.00316.71
8.0.50.0050.00316.78
8.0.30.0080.01117.09
8.0.20.0140.00917.40
8.0.10.0040.00417.05
8.0.00.0100.00816.67
7.4.330.0000.00515.03
7.4.320.0000.00616.49
7.4.300.0000.00616.51
7.4.290.0040.00416.43
7.4.280.0070.00016.57
7.4.270.0040.00416.43
7.4.260.0000.00816.50
7.4.250.0040.00416.46
7.4.240.0060.00116.43
7.4.230.0060.00316.25
7.4.220.0070.01016.38
7.4.210.0120.00616.54
7.4.200.0040.00416.43
7.4.160.0070.01616.50
7.4.150.0100.00717.40
7.4.140.0120.00517.86
7.4.130.0120.00816.50
7.4.120.0090.00916.64
7.4.110.0090.00816.36
7.4.100.0070.01016.34
7.4.90.0070.01116.47
7.4.80.0030.01319.39
7.4.70.0150.00316.57
7.4.60.0130.00516.20
7.4.50.0080.00016.36
7.4.40.0140.00716.32
7.4.30.0140.00616.52
7.4.10.0040.01515.20
7.4.00.0070.00915.07
7.3.330.0060.00013.09
7.3.320.0000.00512.90
7.3.310.0030.00316.16
7.3.300.0000.00616.15
7.3.290.0140.00716.23
7.3.280.0080.00716.21
7.3.270.0190.00317.40
7.3.260.0090.00916.21
7.3.250.0100.00616.39
7.3.240.0160.00416.31
7.3.230.0110.00616.39
7.3.210.0100.00816.28
7.3.200.0060.01319.39
7.3.190.0100.00716.23
7.3.180.0060.00916.42
7.3.170.0120.00316.29
7.3.160.0090.00616.43
7.3.130.0060.00914.99
7.3.120.0070.01114.92
7.3.110.0040.01214.65
7.3.100.0100.00315.00
7.3.90.0080.00514.52
7.3.80.0050.00314.94
7.3.70.0030.01014.67
7.3.60.0000.00814.65
7.3.50.0060.00614.80
7.3.40.0080.00414.54
7.3.30.0000.00814.84
7.3.20.0070.00416.52
7.3.10.0000.01516.53
7.3.00.0080.00616.34
7.2.330.0090.00616.29
7.2.320.0030.01316.65
7.2.310.0070.01016.72
7.2.300.0070.01116.25
7.2.290.0120.00616.27
7.2.260.0040.01614.59
7.2.250.0120.00614.94
7.2.240.0070.00714.72
7.2.230.0040.01114.58
7.2.220.0070.01015.10
7.2.210.0060.00614.82
7.2.200.0090.00614.76
7.2.190.0000.01214.97
7.2.180.0060.01014.94
7.2.170.0070.00714.96
7.2.160.0090.00015.04
7.2.150.0090.00316.85
7.2.140.0060.00316.92
7.2.130.0110.00416.87
7.2.120.0060.00516.66
7.2.110.0030.01116.88
7.2.100.0070.00416.79
7.2.90.0040.01016.64
7.2.80.0000.01317.02
7.2.70.0070.00616.71
7.2.60.0050.01116.90
7.2.50.0080.00716.78
7.2.40.0090.00716.86
7.2.30.0020.01016.90
7.2.20.0080.00316.86
7.2.10.0070.00816.71
7.2.00.0020.01117.59
7.1.330.0070.00715.92
7.1.320.0070.01015.54
7.1.310.0090.00315.82
7.1.300.0040.01115.73
7.1.290.0060.00615.61
7.1.280.0090.00415.84
7.1.270.0030.01115.55
7.1.260.0060.00615.88
7.1.250.0080.00415.77
7.1.240.0040.01215.48
7.1.230.0030.00715.82
7.1.220.0000.01515.55
7.1.210.0080.00015.68
7.1.200.0060.00415.69
7.1.190.0000.01515.75
7.1.180.0030.01015.55
7.1.170.0060.00615.68
7.1.160.0040.00715.71
7.1.150.0000.01415.65
7.1.140.0000.01515.68
7.1.130.0110.00715.88
7.1.120.0040.00715.89
7.1.110.0070.00715.90
7.1.100.0020.01116.91
7.1.90.0120.00315.68
7.1.80.0040.00415.75
7.1.70.0030.00916.34
7.1.60.0060.01317.71
7.1.50.0070.00716.12
7.1.40.0000.00815.52
7.1.30.0040.00715.56
7.1.20.0060.00615.70
7.1.10.0040.00415.71
7.1.00.0070.03818.93
7.0.330.0040.01115.60
7.0.320.0030.00915.36
7.0.310.0090.00315.51
7.0.300.0070.00715.54
7.0.290.0110.00315.20
7.0.280.0060.00315.29
7.0.270.0100.00315.47
7.0.260.0060.00615.04
7.0.250.0060.00615.41
7.0.240.0030.00915.39
7.0.230.0040.01215.38
7.0.220.0070.00715.37
7.0.210.0000.01415.38
7.0.200.0030.00715.87
7.0.190.0060.00315.58
7.0.180.0060.00615.45
7.0.170.0080.00015.23
7.0.160.0040.00815.41
7.0.150.0090.00315.38
7.0.140.0060.03818.79
7.0.130.0060.00615.61
7.0.120.0040.00815.26
7.0.110.0070.00415.58
7.0.100.0030.00715.38
7.0.90.0390.03217.75
7.0.80.0250.04417.56
7.0.70.0330.04317.74
7.0.60.0410.03117.50
7.0.50.0320.04517.97
7.0.40.0050.04116.88
7.0.30.0100.04516.79
7.0.20.0050.04716.64
7.0.10.0070.04116.58
7.0.00.0080.04216.74
5.6.400.0070.00314.60
5.6.390.0040.01114.38
5.6.380.0000.01514.53
5.6.370.0030.01014.34
5.6.360.0070.00314.68
5.6.350.0080.00414.54
5.6.340.0000.01114.29
5.6.330.0080.00414.54
5.6.320.0070.01014.25
5.6.310.0060.00614.46
5.6.300.0100.00314.54
5.6.290.0050.00514.57
5.6.280.0120.03217.55
5.6.270.0080.00614.48
5.6.260.0040.01114.40
5.6.250.0070.00714.29
5.6.240.0060.04217.50
5.6.230.0070.04217.54
5.6.220.0170.03317.48
5.6.210.0130.03217.51
5.6.200.0100.04117.69
5.6.190.0080.03617.62
5.6.180.0070.03317.69
5.6.170.0090.03317.63
5.6.160.0050.04817.64
5.6.150.0080.03817.75
5.6.140.0070.04817.73
5.6.130.0050.05017.61
5.6.120.0070.04817.66
5.6.110.0050.03117.73
5.6.100.0090.03617.79
5.6.90.0020.05217.84
5.6.80.0100.04017.49
5.6.70.0070.04217.41
5.6.60.0080.03517.36
5.6.50.0110.04117.23
5.6.40.0020.03417.48
5.6.30.0080.04017.33
5.6.20.0060.03017.29
5.6.10.0060.03117.27
5.6.00.0070.04517.31
5.5.380.0080.04117.27
5.5.370.0030.03717.38
5.5.360.0090.04017.43
5.5.350.0030.03017.28
5.5.340.0050.03617.53
5.5.330.0070.02517.41
5.5.320.0130.03117.57
5.5.310.0050.04017.36
5.5.300.0050.04617.61
5.5.290.0080.03917.54
5.5.280.0090.04617.55
5.5.270.0090.04217.49
5.5.260.0070.04217.56
5.5.250.0100.04317.50
5.5.240.0030.04217.17
5.5.230.0080.02517.14
5.5.220.0030.02917.23
5.5.210.0050.04317.32
5.5.200.0050.04317.09
5.5.190.0070.02417.11
5.5.180.0030.02917.25
5.5.170.0000.00814.07
5.5.160.0080.04217.34
5.5.150.0060.04617.26
5.5.140.0070.04317.11
5.5.130.0070.03116.99
5.5.120.0040.04317.26
5.5.110.0070.04317.33
5.5.100.0060.04617.14
5.5.90.0050.04417.23
5.5.80.0020.04917.13
5.5.70.0060.04016.98
5.5.60.0100.03817.05
5.5.50.0130.03516.97
5.5.40.0120.02717.11
5.5.30.0020.04317.08
5.5.20.0050.02916.93
5.5.10.0070.04217.16
5.5.00.0050.02717.10
5.4.450.0050.04515.98
5.4.440.0050.04815.99
5.4.430.0100.03816.08
5.4.420.0070.04416.13
5.4.410.0140.03516.06
5.4.400.0080.04015.85
5.4.390.0080.03515.92
5.4.380.0060.04015.84
5.4.370.0030.03715.92
5.4.360.0100.03315.92
5.4.350.0070.03415.97
5.4.340.0050.02515.97
5.4.330.0030.00712.72
5.4.320.0030.04315.92
5.4.310.0070.04115.93
5.4.300.0070.03715.89
5.4.290.0070.02915.92
5.4.280.0050.04215.97
5.4.270.0080.03015.93
5.4.260.0080.04315.85
5.4.250.0030.04115.93
5.4.240.0050.03715.90
5.4.230.0060.03815.82
5.4.220.0050.03915.92
5.4.210.0050.04315.87
5.4.200.0030.03015.89
5.4.190.0090.03515.92
5.4.180.0090.02315.97
5.4.170.0030.03115.76
5.4.160.0050.03615.74
5.4.150.0030.02815.88
5.4.140.0020.02714.48
5.4.130.0050.03814.47
5.4.120.0030.02514.47
5.4.110.0030.03114.46
5.4.100.0110.02214.49
5.4.90.0070.03714.47
5.4.80.0050.03814.46
5.4.70.0080.03814.56
5.4.60.0070.03514.49
5.4.50.0090.03114.55
5.4.40.0000.02514.52
5.4.30.0000.02314.57
5.4.20.0090.01714.45
5.4.10.0050.04214.48
5.4.00.0030.02314.20
5.3.290.0100.07714.65
5.3.280.0130.06314.43
5.3.270.0000.05314.54
5.3.260.0170.04014.60
5.3.250.0100.03714.44
5.3.240.0070.04714.52
5.3.230.0070.04314.58
5.3.220.0130.04014.52
5.3.210.0130.05314.56
5.3.200.0070.07314.48
5.3.190.0030.07714.43
5.3.180.0100.06314.50
5.3.170.0100.07014.54
5.3.160.0030.04314.53
5.3.150.0130.05714.55
5.3.140.0030.07714.57
5.3.130.0100.07014.41
5.3.120.0100.03314.46
5.3.110.0070.08314.46
5.3.100.0270.05713.89
5.3.90.0070.07313.84
5.3.80.0070.07313.87
5.3.70.0100.07714.01
5.3.60.0000.04714.00
5.3.50.0100.04013.92
5.3.40.0100.06713.93
5.3.30.0000.07713.91
5.3.20.0030.07313.65
5.3.10.0130.06713.62
5.3.00.0070.04013.64
5.2.170.0070.05711.19
5.2.160.0070.03711.14
5.2.150.0070.04711.00
5.2.140.0100.05310.93
5.2.130.0070.06011.12
5.2.120.0000.06711.12
5.2.110.0070.04011.06
5.2.100.0070.04310.96
5.2.90.0070.03710.95
5.2.80.0070.05011.01
5.2.70.0070.03711.09
5.2.60.0070.04310.99
5.2.50.0030.04310.84
5.2.40.0030.06010.84
5.2.30.0100.05310.82
5.2.20.0000.04311.02
5.2.10.0030.05310.93
5.2.00.0030.06010.72
5.1.60.0070.03710.01
5.1.50.0000.05710.07
5.1.40.0030.0509.82
5.1.30.0070.05010.26
5.1.20.0100.05310.28
5.1.10.0070.05010.11
5.1.00.0100.04710.09
5.0.50.0030.0408.38
5.0.40.0030.0308.42
5.0.30.0100.0578.27
5.0.20.0000.0308.04
5.0.10.0030.0238.01
5.0.00.0070.0608.23
4.4.90.0000.0277.53
4.4.80.0030.0277.53
4.4.70.0070.0307.53
4.4.60.0100.0307.53
4.4.50.0070.0207.53
4.4.40.0030.0507.53
4.4.30.0000.0307.53
4.4.20.0030.0207.53
4.4.10.0070.0307.53
4.4.00.0030.0537.53
4.3.110.0000.0237.53
4.3.100.0000.0277.53
4.3.90.0000.0207.53
4.3.80.0030.0537.53
4.3.70.0000.0377.53
4.3.60.0030.0237.53
4.3.50.0000.0307.53
4.3.40.0000.0277.53
4.3.30.0000.0337.53
4.3.20.0030.0237.53
4.3.10.0000.0337.53
4.3.00.0000.0377.53

preferences:
38.4 ms | 400 KiB | 5 Q