3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isJson($string) { json_decode($string); return (json_last_error() == JSON_ERROR_NONE); } $a=['arraiii'=>['dentro'=>234]]; var_dump(isJson($a));

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)
8.3.60.0090.00616.88
8.3.50.0120.00717.51
8.3.40.0150.00018.61
8.3.30.0090.00618.79
8.3.20.0030.00618.86
8.3.10.0090.00018.94
8.3.00.0080.00019.50
8.2.180.0040.01116.88
8.2.170.0110.00422.96
8.2.160.0180.00321.20
8.2.150.0100.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00420.50
8.2.110.0090.00020.99
8.2.100.0000.01417.91
8.2.90.0000.01119.17
8.2.80.0060.00319.38
8.2.70.0050.00317.38
8.2.60.0060.00317.93
8.2.50.0000.00818.07
8.2.40.0040.00418.03
8.2.30.0040.00417.98
8.2.20.0040.00419.44
8.2.10.0000.00717.66
8.2.00.0070.00017.71
8.1.280.0070.00725.92
8.1.270.0040.00424.66
8.1.260.0030.00626.35
8.1.250.0040.00428.09
8.1.240.0000.00922.47
8.1.230.0040.00720.89
8.1.220.0000.00817.74
8.1.210.0000.00818.95
8.1.200.0030.00717.35
8.1.190.0040.00417.39
8.1.180.0000.00818.10
8.1.170.0050.00318.75
8.1.160.0070.00018.82
8.1.150.0040.00418.50
8.1.140.0040.00417.40
8.1.130.0050.00317.76
8.1.120.0020.00517.33
8.1.110.0040.00417.43
8.1.100.0030.00317.38
8.1.90.0040.00417.30
8.1.80.0000.00817.43
8.1.70.0000.00717.25
8.1.60.0040.00417.47
8.1.50.0030.00517.32
8.1.40.0040.00417.56
8.1.30.0050.00317.61
8.1.20.0040.00417.52
8.1.10.0000.00717.51
8.1.00.0000.00717.39
8.0.300.0040.00419.94
8.0.290.0070.00016.88
8.0.280.0070.00018.39
8.0.270.0070.00017.05
8.0.260.0000.00718.39
8.0.250.0050.00216.90
8.0.240.0000.00716.85
8.0.230.0030.00316.84
8.0.220.0070.00016.85
8.0.210.0040.00316.80
8.0.200.0060.00016.85
8.0.190.0040.00416.92
8.0.180.0080.00016.86
8.0.170.0040.00416.87
8.0.160.0000.00716.84
8.0.150.0000.00816.86
8.0.140.0000.00716.87
8.0.130.0000.00613.29
8.0.120.0020.00516.86
8.0.110.0080.00016.92
8.0.100.0050.00316.84
8.0.90.0040.00416.78
8.0.80.0090.00916.82
8.0.70.0000.00716.74
8.0.60.0000.00716.92
8.0.50.0040.00416.69
8.0.30.0090.00917.12
8.0.20.0110.00717.11
8.0.10.0000.00716.92
8.0.00.0130.00816.64
7.4.330.0050.00013.00
7.4.320.0030.00316.59
7.4.300.0000.00616.50
7.4.290.0000.00616.56
7.4.280.0040.00416.57
7.4.270.0030.00316.40
7.4.260.0040.00413.26
7.4.250.0030.00516.44
7.4.240.0030.00516.57
7.4.230.0040.00416.50
7.4.220.0160.01016.48
7.4.210.0070.00916.54
7.4.200.0070.00016.61
7.4.190.0070.00016.73
7.4.160.0100.00716.36
7.4.150.0070.01116.54
7.4.140.0070.01016.52
7.4.130.0080.01016.48
7.4.120.0050.01116.49
7.4.110.0110.00716.57
7.4.100.0070.01016.74
7.4.90.0120.00416.63
7.4.80.0100.00719.39
7.4.70.0090.00916.77
7.4.60.0130.00316.44
7.4.50.0020.00716.34
7.4.40.0080.00516.53
7.4.30.0110.00616.59
7.4.00.0090.00514.93
7.3.330.0030.00313.31
7.3.320.0000.00513.17
7.3.310.0030.00616.40
7.3.300.0000.00616.27
7.3.290.0100.00516.31
7.3.280.0160.00316.28
7.3.270.0110.00716.41
7.3.260.0170.00016.43
7.3.250.0150.00516.30
7.3.240.0090.00616.55
7.3.230.0120.00316.42
7.3.210.0120.00616.32
7.3.200.0030.01916.59
7.3.190.0110.00516.53
7.3.180.0130.00316.43
7.3.170.0060.00916.34
7.3.160.0030.01316.41
7.3.120.0090.00714.92
7.3.110.0030.01414.84
7.3.100.0060.00614.72
7.3.90.0040.00814.80
7.3.80.0030.00614.65
7.3.70.0030.00914.87
7.3.60.0000.01314.63
7.3.50.0000.01014.63
7.3.40.0040.00714.88
7.3.30.0090.00314.88
7.3.20.0030.00716.71
7.3.10.0080.00316.51
7.3.00.0120.00016.66
7.2.330.0000.01916.36
7.2.320.0100.00716.68
7.2.310.0070.01116.72
7.2.300.0100.00716.71
7.2.290.0130.00316.57
7.2.250.0030.01315.20
7.2.240.0000.01614.95
7.2.230.0000.01014.96
7.2.220.0090.00014.86
7.2.210.0040.00715.10
7.2.200.0070.01114.88
7.2.190.0060.01114.98
7.2.180.0030.00614.82
7.2.170.0120.00014.91
7.2.00.0050.00519.49
7.1.330.0030.00915.59
7.1.320.0070.00415.64
7.1.310.0030.00915.53
7.1.300.0050.00515.74
7.1.290.0000.01215.67
7.1.280.0030.00615.68
7.1.270.0030.01315.76
7.1.260.0070.00415.77
7.1.100.0060.00618.11
7.1.70.0050.00217.21
7.1.60.0060.01919.40
7.1.50.0000.02116.98
7.1.00.0070.06022.33
7.0.200.0580.00614.88
7.0.140.0030.07721.92
7.0.120.0030.07722.13
7.0.60.0070.03719.78
7.0.50.0130.06017.90
7.0.40.0000.04317.79
7.0.30.0070.04317.76
7.0.20.0100.04317.84
7.0.10.0170.02717.68
7.0.00.0030.04017.71
5.6.280.0000.07720.78
5.6.210.0030.08320.47
5.6.200.0100.06718.27
5.6.190.0130.05018.23
5.6.180.0000.04318.18
5.6.170.0030.04718.18
5.6.160.0070.04318.18
5.6.150.0030.03718.17
5.6.140.0030.04018.16
5.6.130.0070.03718.22
5.6.120.0030.04018.27
5.6.110.0100.04018.26
5.6.100.0070.03718.14
5.6.90.0000.04318.12
5.6.80.0030.04017.59
5.6.70.0000.04017.65
5.6.60.0000.04017.66
5.6.50.0070.03317.58
5.6.40.0070.04017.53
5.6.30.0100.03017.50
5.6.20.0000.07317.52
5.6.10.0030.05717.49
5.6.00.0100.03317.53
5.5.350.0400.06720.46
5.5.340.0100.08018.02
5.5.330.0000.05317.93
5.5.320.0030.04018.08
5.5.310.0030.04018.00
5.5.300.0070.04017.99
5.5.290.0000.04318.08
5.5.280.0100.03318.08
5.5.270.0030.04018.01
5.5.260.0070.03717.96
5.5.250.0000.04717.86
5.5.240.0000.04017.38
5.5.230.0030.03717.36
5.5.220.0030.03717.39
5.5.210.0070.03317.36
5.5.200.0030.05317.39
5.5.190.0000.04017.34
5.5.180.0000.04017.43
5.5.160.0030.03717.38
5.5.150.0070.07717.43
5.5.140.0070.04317.34
5.5.130.0070.08317.30
5.5.120.0070.06717.45
5.5.110.0030.05017.34
5.5.100.0070.07317.21
5.5.90.0070.04317.21
5.5.80.0100.07717.21
5.5.70.0000.06017.25
5.5.60.0070.06717.23
5.5.50.0130.06717.27
5.5.40.0100.07717.20
5.5.30.0030.04717.28
5.5.20.0100.07017.20
5.5.10.0100.03717.25
5.5.00.0100.07717.18
5.4.450.0030.06319.46
5.4.440.0100.03319.45
5.4.430.0000.04019.59
5.4.420.0030.03719.42
5.4.410.0100.04019.32
5.4.400.0100.03019.03
5.4.390.0000.04019.09
5.4.380.0000.04019.12
5.4.370.0000.04019.27
5.4.360.0070.03319.01
5.4.350.0030.03719.02
5.4.340.0070.04319.03
5.4.320.0100.07319.09
5.4.310.0130.07019.04
5.4.300.0070.04718.88
5.4.290.0030.04019.13
5.4.280.0030.08019.01
5.4.270.0000.06018.98
5.4.260.0100.07019.13
5.4.250.0030.05318.95
5.4.240.0030.09319.09
5.4.230.0030.07719.11
5.4.220.0170.06719.01
5.4.210.0070.08319.04
5.4.200.0130.06718.98
5.4.190.0030.05019.11
5.4.180.0170.06719.04
5.4.170.0130.07019.09
5.4.160.0100.03719.05
5.4.150.0070.05718.94
5.4.140.0070.04716.36
5.4.130.0100.06716.32
5.4.120.0000.04016.24
5.4.110.0130.06316.41
5.4.100.0030.04016.56
5.4.90.0130.06716.32
5.4.80.0100.03016.33
5.4.70.0030.07016.44
5.4.60.0070.05316.38
5.4.50.0000.04316.37
5.4.40.0030.06316.41
5.4.30.0130.06016.48
5.4.20.0100.03716.45
5.4.10.0130.02716.27
5.4.00.0030.05015.77
5.3.290.0070.05014.63
5.3.280.0100.06714.58
5.3.270.0000.04314.59
5.3.260.0100.03714.61
5.3.250.0100.05314.66
5.3.240.0030.07014.60
5.3.230.0030.04714.63
5.3.220.0030.03714.60
5.3.210.0030.04014.60
5.3.200.0130.04014.52
5.3.190.0030.03714.57
5.3.180.0000.06014.60
5.3.170.0030.06014.61
5.3.160.0100.04714.63
5.3.150.0000.05014.66
5.3.140.0070.07714.56
5.3.130.0100.06314.40
5.3.120.0130.06014.65
5.3.110.0070.03714.54
5.3.100.0030.04014.07
5.3.90.0030.03714.06
5.3.80.0000.05714.06
5.3.70.0170.06713.91
5.3.60.0000.08014.00
5.3.50.0000.04013.80
5.3.40.0000.04313.99
5.3.30.0030.07713.91
5.3.20.0030.03713.77
5.3.10.0170.06013.54
5.3.00.0070.06013.67
5.2.170.0100.02711.21
5.2.160.0000.04011.19
5.2.150.0000.03011.25
5.2.140.0000.03011.11
5.2.130.0100.04311.09
5.2.120.0070.05710.95
5.2.110.0100.05311.17
5.2.100.0030.06010.95
5.2.90.0000.06311.10
5.2.80.0070.06011.05
5.2.70.0070.05311.09
5.2.60.0030.04310.96
5.2.50.0030.05011.00
5.2.40.0030.03311.09
5.2.30.0100.03311.02
5.2.20.0070.02310.97
5.2.10.0030.04010.89
5.2.00.0070.05310.57
5.1.60.0070.0479.94
5.1.50.0030.02710.10
5.1.40.0000.03310.02
5.1.30.0130.05010.43
5.1.20.0000.04710.57
5.1.10.0100.03310.17
5.1.00.0000.06010.06
5.0.50.0000.0308.60
5.0.40.0000.0378.46
5.0.30.0070.0678.20
5.0.20.0070.0378.11
5.0.10.0030.0208.16
5.0.00.0030.0378.23
4.4.90.0100.0237.73
4.4.80.0000.0307.73
4.4.70.0030.0337.73
4.4.60.0030.0207.73
4.4.50.0030.0177.73
4.4.40.0030.0237.73
4.4.30.0000.0207.73
4.4.20.0000.0407.73
4.4.10.0000.0207.73
4.4.00.0000.0407.73
4.3.110.0000.0307.73
4.3.100.0000.0207.73
4.3.90.0000.0237.73
4.3.80.0000.0237.73
4.3.70.0000.0177.73
4.3.60.0000.0207.73
4.3.50.0000.0177.73
4.3.40.0100.0437.73
4.3.30.0030.0337.73
4.3.20.0030.0307.73
4.3.10.0000.0337.73
4.3.00.0000.0277.73

preferences:
34.7 ms | 400 KiB | 5 Q