3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(' 1' => 'A', '2' => 'B', 3 => 'C'); echo serialize($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)
8.3.40.0040.01118.72
8.3.30.0170.00318.79
8.3.20.0070.00720.30
8.3.10.0000.00922.10
8.3.00.0080.00022.50
8.2.170.0220.00022.96
8.2.160.0080.00820.80
8.2.150.0040.00424.18
8.2.140.0000.00924.66
8.2.130.0080.00026.16
8.2.120.0030.00519.48
8.2.110.0000.00822.11
8.2.100.0090.00317.68
8.2.90.0080.00019.21
8.2.80.0080.00017.97
8.2.70.0080.00417.50
8.2.60.0040.00417.92
8.2.50.0050.00318.07
8.2.40.0080.00418.08
8.2.30.0040.00417.97
8.2.20.0000.00717.65
8.2.10.0000.00717.57
8.2.00.0000.00817.60
8.1.270.0040.00423.84
8.1.260.0030.00526.35
8.1.250.0170.00028.09
8.1.240.0030.00623.82
8.1.230.0110.00019.10
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0060.00317.10
8.1.190.0030.00617.40
8.1.180.0080.00018.10
8.1.170.0040.00418.59
8.1.160.0040.00421.93
8.1.150.0060.00318.47
8.1.140.0050.00217.41
8.1.130.0030.00317.81
8.1.120.0040.00317.34
8.1.110.0070.00017.41
8.1.100.0000.00717.36
8.1.90.0020.00517.41
8.1.80.0070.00017.37
8.1.70.0050.00317.38
8.1.60.0060.00317.51
8.1.50.0040.00417.43
8.1.40.0040.00417.47
8.1.30.0080.00017.52
8.1.20.0000.00817.58
8.1.10.0000.00817.48
8.1.00.0050.00317.45
8.0.300.0000.00718.77
8.0.290.0040.00417.18
8.0.280.0000.00718.38
8.0.270.0000.00717.25
8.0.260.0060.00016.71
8.0.250.0030.00317.01
8.0.240.0000.00716.83
8.0.230.0050.00316.78
8.0.220.0070.00016.77
8.0.210.0000.00716.81
8.0.200.0060.00016.86
8.0.190.0000.00716.85
8.0.180.0000.00816.82
8.0.170.0000.00816.73
8.0.160.0050.00216.89
8.0.150.0000.00716.66
8.0.140.0030.00316.73
8.0.130.0000.00513.32
8.0.120.0030.00616.71
8.0.110.0000.00816.77
8.0.100.0030.00516.63
8.0.90.0000.00816.77
8.0.80.0110.00616.85
8.0.70.0040.00416.64
8.0.60.0050.00316.82
8.0.50.0040.00416.85
8.0.30.0120.00816.81
8.0.20.0120.00717.40
8.0.10.0000.00716.88
8.0.00.0160.00816.67
7.4.330.0050.00015.00
7.4.320.0030.00316.47
7.4.300.0030.00316.31
7.4.290.0030.00616.50
7.4.280.0000.00716.54
7.4.270.0030.00316.53
7.4.260.0000.00716.45
7.4.250.0040.00416.38
7.4.240.0050.00216.36
7.4.230.0000.00716.38
7.4.220.0090.00916.49
7.4.210.0060.01016.54
7.4.200.0030.00316.52
7.4.190.0030.00316.32
7.4.160.0150.00716.29
7.4.150.0070.01017.40
7.4.140.0090.00817.86
7.4.130.0120.00416.37
7.4.120.0120.00816.28
7.4.110.0100.00716.50
7.4.100.0120.00616.57
7.4.90.0140.00316.36
7.4.80.0040.01616.44
7.4.70.0130.01016.35
7.4.60.0060.00916.62
7.4.50.0000.00916.27
7.4.40.0070.00822.77
7.4.30.0030.01316.50
7.4.10.0090.00914.75
7.4.00.0090.00814.89
7.3.330.0030.00313.06
7.3.320.0070.00012.84
7.3.310.0060.00016.21
7.3.300.0040.00416.11
7.3.290.0090.00616.15
7.3.280.0060.01316.12
7.3.270.0040.01217.40
7.3.260.0090.00916.37
7.3.250.0070.01316.22
7.3.240.0090.00816.18
7.3.230.0060.00916.39
7.3.210.0160.00316.43
7.3.200.0150.00319.39
7.3.190.0130.00716.42
7.3.180.0070.01016.53
7.3.170.0060.01016.27
7.3.160.0080.00816.07
7.3.130.0050.01314.71
7.3.120.0080.00914.74
7.3.110.0080.00814.65
7.3.100.0070.01014.60
7.3.90.0070.00714.75
7.3.80.0060.00714.73
7.3.70.0090.00214.55
7.3.60.0080.00714.76
7.3.50.0070.00714.54
7.3.40.0080.00414.62
7.3.30.0050.00514.72
7.3.20.0050.00916.51
7.3.10.0030.00816.61
7.3.00.0070.00416.52
7.2.330.0090.00816.60
7.2.320.0090.01216.55
7.2.310.0070.01016.53
7.2.300.0120.00416.45
7.2.290.0160.00616.42
7.2.260.0070.01214.87
7.2.250.0050.01315.06
7.2.240.0060.01014.79
7.2.230.0060.01014.93
7.2.220.0070.00914.85
7.2.210.0040.00914.77
7.2.200.0010.01314.89
7.2.190.0070.00614.84
7.2.180.0060.00714.86
7.2.170.0080.00614.98
7.2.160.0070.00814.83
7.2.150.0040.00916.78
7.2.140.0030.01016.79
7.2.130.0080.00616.77
7.2.120.0070.00716.60
7.2.110.0070.00916.79
7.2.100.0060.00616.75
7.2.90.0060.00916.76
7.2.80.0090.00416.70
7.2.70.0080.00516.94
7.2.60.0060.00916.70
7.2.50.0070.00816.84
7.2.40.0070.00816.82
7.2.30.0070.00616.70
7.2.20.0040.00916.85
7.2.10.0060.00816.87
7.2.00.0050.01016.66
7.1.330.0080.00715.86
7.1.320.0070.00815.68
7.1.310.0040.01015.68
7.1.300.0070.00815.53
7.1.290.0050.00715.76
7.1.280.0040.01015.75
7.1.270.0090.00615.70
7.1.260.0050.00915.70
7.1.250.0040.00815.71
7.1.240.0050.00815.68
7.1.230.0070.00615.60
7.1.220.0090.00315.70
7.1.210.0060.00515.72
7.1.200.0040.01115.63
7.1.190.0060.00415.77
7.1.180.0050.01115.67
7.1.170.0080.00715.65
7.1.160.0050.00715.70
7.1.150.0020.01015.65
7.1.140.0030.01015.70
7.1.130.0080.00415.69
7.1.120.0070.00315.65
7.1.110.0070.00615.76
7.1.100.0060.00615.72
7.1.90.0040.00815.66
7.1.80.0020.01015.70
7.1.70.0030.00715.96
7.1.60.0050.01016.75
7.1.50.0080.00815.88
7.1.40.0000.01215.57
7.1.30.0060.00715.74
7.1.20.0060.00715.78
7.1.10.0030.00915.48
7.1.00.0050.02617.38
7.0.330.0060.00515.31
7.0.320.0020.00915.33
7.0.310.0090.00415.23
7.0.300.0060.00715.38
7.0.290.0010.01015.31
7.0.280.0030.01015.25
7.0.270.0070.00615.34
7.0.260.0020.00915.29
7.0.250.0030.00815.34
7.0.240.0070.00815.30
7.0.230.0050.00715.33
7.0.220.0060.00715.23
7.0.210.0040.00715.34
7.0.200.0030.00915.61
7.0.190.0020.00815.25
7.0.180.0080.00615.39
7.0.170.0040.00515.36
7.0.160.0070.00615.36
7.0.150.0060.00415.20
7.0.140.0050.02217.09
7.0.130.0040.00815.22
7.0.120.0040.00615.37
7.0.110.0030.00815.25
7.0.100.0040.00915.35
7.0.90.0060.00615.35
7.0.80.0040.00915.15
7.0.70.0070.01716.94
7.0.60.0040.01616.92
7.0.50.0090.02216.97
7.0.40.0060.02215.07
7.0.30.0060.01515.13
7.0.20.0070.01815.15
7.0.10.0020.02515.04
7.0.00.0100.02415.18
5.6.400.0050.00914.39
5.6.390.0090.00514.40
5.6.380.0040.00814.19
5.6.370.0050.00714.29
5.6.360.0080.00714.27
5.6.350.0040.00913.93
5.6.340.0070.00414.12
5.6.330.0050.00814.19
5.6.320.0110.00414.35
5.6.310.0070.00614.40
5.6.300.0040.00814.29
5.6.290.0040.00614.22
5.6.280.0060.02315.87
5.6.270.0050.00914.24
5.6.260.0080.00614.46
5.6.250.0050.00714.39
5.6.240.0040.00814.28
5.6.230.0070.00914.23
5.6.220.0050.02815.90
5.6.210.0060.02015.81
5.6.200.0050.02916.06
5.6.190.0050.02815.97
5.6.180.0050.02615.91
5.6.170.0070.02615.92
5.6.160.0090.02415.90
5.6.150.0040.02615.96
5.6.140.0080.02515.94
5.6.130.0060.01915.99
5.6.120.0060.02015.94
5.6.110.0040.02715.96
5.6.100.0040.01815.91
5.6.90.0100.01615.87
5.6.80.0060.02115.88
5.6.70.0070.02215.84
5.6.60.0080.01615.80
5.6.50.0040.02515.74
5.6.40.0050.02015.70
5.6.30.0040.02615.62
5.6.20.0050.02615.76
5.6.10.0070.01715.81
5.6.00.0080.01915.68
5.5.380.0090.00314.39
5.5.370.0040.00914.30
5.5.360.0050.02315.95
5.5.350.0060.02215.64
5.5.340.0070.02415.86
5.5.330.0040.02615.75
5.5.320.0070.01915.90
5.5.310.0100.02415.88
5.5.300.0030.02815.81
5.5.290.0040.02415.77
5.5.280.0030.02915.78
5.5.270.0060.02015.74
5.5.260.0070.02415.85
5.5.250.0040.02315.67
5.5.240.0060.02315.58
5.5.230.0040.02615.57
5.5.220.0030.02715.77
5.5.210.0070.02015.71
5.5.200.0070.02415.62
5.5.190.0050.02115.47
5.5.180.0050.02615.67
5.5.170.0070.00614.13
5.5.160.0060.02515.70
5.5.150.0050.02515.69
5.5.140.0050.02715.73
5.5.130.0050.02415.62
5.5.120.0040.02315.55
5.5.110.0040.02615.73
5.5.100.0050.02715.45
5.5.90.0040.02215.46
5.5.80.0070.02415.55
5.5.70.0080.02215.53
5.5.60.0050.02615.66
5.5.50.0050.02215.57
5.5.40.0070.02015.54
5.5.30.0040.02615.51
5.5.20.0040.02415.54
5.5.10.0050.02415.51
5.5.00.0040.02715.61
5.4.450.0040.02114.53
5.4.440.0040.02214.56
5.4.430.0070.02314.49
5.4.420.0050.02114.49
5.4.410.0050.02214.48
5.4.400.0050.02514.43
5.4.390.0070.01914.38
5.4.380.0020.02514.43
5.4.370.0060.02214.43
5.4.360.0000.02814.41
5.4.350.0040.02314.43
5.4.340.0050.01614.45
5.4.330.0050.00612.89
5.4.320.0010.02314.43
5.4.310.0070.01914.47
5.4.300.0040.02314.46
5.4.290.0020.02614.43
5.4.280.0030.02414.43
5.4.270.0060.01314.43
5.4.260.0020.01914.43
5.4.250.0050.02314.47
5.4.240.0070.01514.37
5.4.230.0060.02214.47
5.4.220.0030.02414.43
5.4.210.0060.01814.45
5.4.200.0050.01814.42
5.4.190.0020.02514.39
5.4.180.0060.02314.43
5.4.170.0050.02114.37
5.4.160.0020.02414.43
5.4.150.0050.01914.40
5.4.140.0040.01713.74
5.4.130.0060.01813.74
5.4.120.0040.01613.77
5.4.110.0020.02613.72
5.4.100.0030.01413.77
5.4.90.0050.02313.77
5.4.80.0070.02313.72
5.4.70.0030.02113.73
5.4.60.0040.02413.72
5.4.50.0050.01613.72
5.4.40.0050.02113.78
5.4.30.0050.02013.72
5.4.20.0030.02113.72
5.4.10.0050.02313.73
5.4.00.0030.02313.62
5.3.290.0050.02113.62
5.3.280.0050.02013.62
5.3.270.0040.02313.62
5.3.260.0050.02013.62
5.3.250.0030.02513.62
5.3.240.0040.02313.62
5.3.230.0020.02613.62
5.3.220.0040.02413.62
5.3.210.0050.01613.62
5.3.200.0030.01913.62
5.3.190.0020.02513.62
5.3.180.0050.02313.62
5.3.170.0020.02513.62
5.3.160.0030.02613.62
5.3.150.0040.02013.62
5.3.140.0060.02213.62
5.3.130.0070.02013.62
5.3.120.0040.02413.62
5.3.110.0050.01913.62
5.3.100.0050.02113.62
5.3.90.0050.02213.62
5.3.80.0060.01713.62
5.3.70.0030.02413.62
5.3.60.0030.02013.62
5.3.50.0080.01813.62
5.3.40.0040.01613.62
5.3.30.0020.02313.62
5.3.20.0030.02013.62
5.3.10.0030.02113.62
5.3.00.0050.01613.62
5.2.170.0070.04715.80
5.2.160.0000.06015.80
5.2.150.0000.06715.80
5.2.140.0030.06315.80
5.2.130.0030.06015.80
5.2.120.0030.06015.80
5.2.110.0030.06015.80
5.2.100.0000.04315.80
5.2.90.0000.05315.80
5.2.80.0030.05715.80
5.2.70.0030.05715.80
5.2.60.0100.05715.80
5.2.50.0030.06015.80
5.2.40.0030.06015.80
5.2.30.0070.06015.80
5.2.20.0000.06015.80
5.2.10.0030.06015.80
5.2.00.0030.05015.80
5.1.60.0030.05715.80
5.1.50.0030.04315.80
5.1.40.0030.05315.80
5.1.30.0030.05315.80
5.1.20.0000.05015.80
5.1.10.0000.05015.80
5.1.00.0030.06715.80
5.0.50.0030.04315.80
5.0.40.0000.04715.80
5.0.30.0000.07015.80
5.0.20.0100.03715.80
5.0.10.0030.04015.80
5.0.00.0000.07015.80
4.4.90.0030.03715.80
4.4.80.0000.03715.80
4.4.70.0030.02715.80
4.4.60.0000.03715.80
4.4.50.0000.03715.80
4.4.40.0000.05715.80
4.4.30.0070.03015.80
4.4.20.0000.02715.80
4.4.10.0000.03315.80
4.4.00.0000.05715.80
4.3.110.0070.03015.80
4.3.100.0030.03715.80
4.3.90.0030.03315.80
4.3.80.0070.05015.80
4.3.70.0070.03015.80
4.3.60.0030.03015.80
4.3.50.0030.03315.80
4.3.40.0000.04315.80
4.3.30.0000.03715.80
4.3.20.0000.03315.80
4.3.10.0000.02715.80
4.3.00.0000.03715.80

preferences:
42.47 ms | 400 KiB | 5 Q