3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['a', 'b']; $ref =& $array[0]; var_dump(array_count_values($array));

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)
8.3.40.0070.00718.53
8.3.30.0070.00718.81
8.3.20.0000.00820.04
8.3.10.0060.00321.80
8.3.00.0040.00420.80
8.2.170.0140.00722.96
8.2.160.0000.01422.08
8.2.150.0030.00524.18
8.2.140.0060.00324.66
8.2.130.0040.00426.16
8.2.120.0050.00319.78
8.2.110.0040.00420.26
8.2.100.0090.00318.09
8.2.90.0060.00319.23
8.2.80.0040.00417.97
8.2.70.0060.00317.63
8.2.60.0060.00317.92
8.2.50.0060.00318.07
8.2.40.0040.00419.95
8.2.30.0020.00517.94
8.2.20.0040.00417.64
8.2.10.0000.00718.08
8.2.00.0020.00517.67
8.1.270.0040.00420.61
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00623.85
8.1.230.0070.00419.08
8.1.220.0030.00617.74
8.1.210.0030.00518.77
8.1.200.0060.00317.22
8.1.190.0030.00517.23
8.1.180.0040.00418.10
8.1.170.0000.00818.52
8.1.160.0040.00421.86
8.1.150.0030.00618.74
8.1.140.0030.00517.42
8.1.130.0000.00717.75
8.1.120.0050.00217.45
8.1.110.0050.00317.38
8.1.100.0040.00417.21
8.1.90.0000.00717.44
8.1.80.0070.00017.36
8.1.70.0000.00717.23
8.1.60.0040.00417.52
8.1.50.0060.00617.48
8.1.40.0030.00517.34
8.1.30.0040.00417.57
8.1.20.0040.00417.46
8.1.10.0040.00417.28
8.1.00.0000.01117.42
8.0.300.0030.00318.77
8.0.290.0040.00416.63
8.0.280.0030.00318.37
8.0.270.0030.00316.75
8.0.260.0000.00717.07
8.0.250.0030.00316.73
8.0.240.0000.00716.94
8.0.230.0070.00016.75
8.0.220.0050.00316.70
8.0.210.0000.00716.83
8.0.200.0000.00716.86
8.0.190.0040.00416.91
8.0.180.0040.00416.75
8.0.170.0050.00316.88
8.0.160.0040.00416.73
8.0.150.0070.00016.76
8.0.140.0030.00516.81
8.0.130.0050.00013.21
8.0.120.0060.00316.82
8.0.110.0040.00416.65
8.0.100.0040.00316.86
8.0.90.0040.00416.81
8.0.80.0170.00316.82
8.0.70.0000.00716.66
8.0.60.0030.00516.77
8.0.50.0030.00316.80
8.0.30.0130.00816.87
8.0.20.0140.00717.40
8.0.10.0000.00716.77
8.0.00.0050.01216.72
7.4.330.0030.00315.03
7.4.320.0000.00716.41
7.4.300.0000.00716.42
7.4.290.0070.00016.45
7.4.280.0040.00416.55
7.4.270.0060.00016.43
7.4.260.0040.00416.39
7.4.250.0050.00216.44
7.4.240.0020.00616.52
7.4.230.0030.00316.48
7.4.220.0070.01116.63
7.4.210.0110.00616.42
7.4.200.0030.00316.34
7.4.160.0060.01016.45
7.4.150.0090.00917.40
7.4.140.0090.01317.86
7.4.130.0070.01416.35
7.4.120.0050.01216.35
7.4.110.0140.01016.32
7.4.100.0130.00616.47
7.4.90.0100.00616.26
7.4.80.0130.00319.39
7.4.70.0130.00616.34
7.4.60.0160.00016.49
7.4.50.0040.00416.29
7.4.40.0060.01016.39
7.4.30.0030.01916.59
7.4.10.0030.01514.96
7.4.00.0090.01014.85
7.3.330.0000.00612.87
7.3.320.0150.00312.99
7.3.310.0000.00716.29
7.3.300.0060.00016.11
7.3.290.0040.00416.23
7.3.280.0050.01116.18
7.3.270.0120.00617.40
7.3.260.0040.01416.14
7.3.250.0100.00716.20
7.3.240.0060.01016.20
7.3.230.0090.00916.39
7.3.210.0120.00916.48
7.3.200.0120.01219.39
7.3.190.0100.00716.19
7.3.180.0180.01116.24
7.3.170.0060.01316.27
7.3.160.0140.00316.57
7.3.130.0090.00914.66
7.3.120.0140.00314.47
7.3.110.0090.00914.69
7.3.100.0070.01014.59
7.3.90.0040.01214.54
7.3.80.0120.00314.83
7.3.70.0100.00314.63
7.3.60.0040.00714.45
7.3.50.0030.00614.80
7.3.40.0090.00314.46
7.3.30.0090.00014.63
7.3.20.0030.00716.57
7.3.10.0030.01016.46
7.3.00.0030.01016.55
7.2.330.0120.00816.19
7.2.320.0150.00916.53
7.2.310.0130.00816.59
7.2.300.0080.01516.63
7.2.290.0060.01216.59
7.2.260.0060.01214.95
7.2.250.0130.00314.68
7.2.240.0090.00614.75
7.2.230.0130.00314.78
7.2.220.0140.00714.74
7.2.210.0040.00814.84
7.2.200.0000.01414.89
7.2.190.0000.01415.00
7.2.180.0030.00914.83
7.2.170.0030.00614.98
7.2.160.0030.01014.74
7.2.150.0110.00316.79
7.2.140.0090.00916.71
7.2.130.0120.00616.66
7.2.120.0070.01316.94
7.2.110.0130.00616.55
7.2.100.0060.00616.81
7.2.90.0040.01116.76
7.2.80.0060.00616.82
7.2.70.0000.01216.62
7.2.60.0080.00516.84
7.2.50.0060.00316.77
7.2.40.0110.00416.76
7.2.30.0070.00716.86
7.2.20.0080.00816.72
7.2.10.0000.01616.80
7.2.00.0050.01017.85
7.1.330.0070.00715.91
7.1.320.0100.00615.63
7.1.310.0110.00415.70
7.1.300.0030.01015.89
7.1.290.0000.00915.77
7.1.280.0080.00415.85
7.1.270.0110.00315.67
7.1.260.0040.01115.47
7.1.250.0100.00315.79
7.1.240.0070.00715.62
7.1.230.0070.00715.47
7.1.220.0040.01415.88
7.1.210.0110.00415.71
7.1.200.0040.00415.59
7.1.190.0030.00515.38
7.1.180.0000.00915.81
7.1.170.0060.00315.80
7.1.160.0060.00615.64
7.1.150.0060.00615.60
7.1.140.0000.00815.77
7.1.130.0140.00015.76
7.1.120.0000.01615.45
7.1.110.0100.00615.29
7.1.100.0040.00717.01
7.1.90.0070.00715.54
7.1.80.0040.00815.44
7.1.70.0050.00416.50
7.1.60.0000.01917.66
7.1.50.0100.00916.29
7.1.40.0070.01015.45
7.1.30.0030.00915.72
7.1.20.0040.00415.70
7.1.10.0070.00715.85
7.1.00.0070.03818.97
7.0.330.0030.01315.43
7.0.320.0080.00815.39
7.0.310.0000.00815.11
7.0.300.0090.00615.24
7.0.290.0090.00315.32
7.0.280.0000.01115.41
7.0.270.0000.00815.29
7.0.260.0030.01215.15
7.0.250.0030.01214.94
7.0.240.0100.00015.56
7.0.230.0030.00715.46
7.0.220.0060.00615.15
7.0.210.0030.01015.36
7.0.200.0040.01015.95
7.0.190.0000.01315.07
7.0.180.0000.01615.32
7.0.170.0090.00615.05
7.0.160.0030.00614.99
7.0.150.0030.01015.46
7.0.140.0060.01718.79
7.0.130.0060.00615.50
7.0.120.0080.00815.57
7.0.110.0070.00315.36
7.0.100.0000.01315.42
7.0.90.0070.00315.11
7.0.80.0090.00615.55
7.0.70.0060.00615.29
7.0.60.0020.05217.59
7.0.50.0050.02316.60
7.0.40.0050.02616.79
7.0.30.0190.03516.59
7.0.20.0230.04116.67
7.0.10.0020.03716.76
7.0.00.0120.02616.77
5.6.400.0000.01414.13
5.6.390.0070.00714.50
5.6.380.0070.01014.12
5.6.370.0000.01414.29
5.6.360.0030.01014.04
5.6.350.0000.00913.91
5.6.340.0030.00913.89
5.6.330.0070.00414.63
5.6.320.0000.01214.21
5.6.310.0090.00614.00
5.6.300.0130.00014.31
5.6.290.0100.00014.01
5.6.280.0020.04317.82
5.6.270.0070.00314.14
5.6.260.0040.01214.59
5.6.250.0090.00614.11
5.6.240.0000.01214.33
5.6.230.0070.00714.22
5.6.220.0070.00714.04
5.6.210.0020.04517.48
5.6.200.0030.02616.23
5.6.190.0090.02117.39
5.6.180.1940.02017.39
5.6.170.0160.02317.23
5.6.160.0070.04517.29
5.6.150.0030.05016.19
5.6.140.0050.04016.30
5.6.130.0080.04616.33
5.6.120.0050.04117.60
5.6.110.0100.04517.67
5.6.100.0030.02517.53
5.6.90.0070.03717.70
5.6.80.0170.03417.15
5.6.70.2330.02017.32
5.6.60.0030.01014.27
5.6.50.0060.00614.43
5.6.40.0060.00914.27
5.6.30.0060.00313.91
5.6.20.0030.00514.26
5.6.10.0030.00913.93
5.6.00.0030.01214.06
5.5.380.0000.01314.18
5.5.370.0060.01014.46
5.5.360.0100.00714.05
5.5.350.0140.02717.49
5.5.340.0050.03316.12
5.5.330.0040.02416.99
5.5.320.0150.02717.42
5.5.310.0190.04317.39
5.5.300.0080.02016.06
5.5.290.0070.02316.02
5.5.280.0080.02317.33
5.5.270.0030.04417.39
5.5.260.0080.04217.61
5.5.250.0100.04317.53
5.5.240.0130.04617.06
5.5.230.0000.01114.17
5.5.220.0000.01214.32
5.5.210.0000.00813.95
5.5.200.0030.01014.01
5.5.190.0030.00614.01
5.5.180.0040.01113.91
5.5.170.0030.00613.99
5.5.160.0130.00313.76
5.5.150.0090.00614.08
5.5.140.0110.00714.03
5.5.130.0060.00913.71
5.5.120.0040.00814.16
5.5.110.0030.01013.83
5.5.100.0060.00314.08
5.5.90.0060.00813.70
5.5.80.0060.00614.00
5.5.70.0090.00314.06
5.5.60.0030.01014.17
5.5.50.0100.00314.28
5.5.40.0000.01414.21
5.5.30.0100.00314.25
5.5.20.0030.01113.91
5.5.10.0080.00814.16
5.5.00.0130.00314.00
5.4.450.0030.03315.93
5.4.440.0700.02316.02
5.4.430.0400.04815.97
5.4.420.0490.03015.94
5.4.410.0700.03715.85
5.4.400.0450.02815.86
5.4.390.0520.02815.52
5.4.380.0500.02915.54
5.4.370.0460.03115.52
5.4.360.0510.02515.56
5.4.350.0540.03115.56
5.4.340.0550.02815.51
5.4.330.0040.00412.43
5.4.320.0500.03415.58
5.4.310.0560.03115.57
5.4.300.0520.02815.53
5.4.290.0470.02815.46
5.4.280.0470.03415.51
5.4.270.0480.03015.54
5.4.260.0520.03115.57
5.4.250.0500.03215.60
5.4.240.0540.02815.46
5.4.230.0470.03215.59
5.4.220.0420.03415.47
5.4.210.0460.02815.51
5.4.200.0510.03014.49
5.4.190.0550.02715.49
5.4.180.0660.02615.60
5.4.170.0480.03015.55
5.4.160.0520.03015.56
5.4.150.0490.03215.48
5.4.140.0570.02314.25
5.4.130.0600.03314.34
5.4.120.0450.03014.29
5.4.110.0480.02614.27
5.4.100.0460.03314.24
5.4.90.0510.03014.31
5.4.80.0430.02814.31
5.4.70.0460.02714.29
5.4.60.0400.03314.24
5.4.50.0530.02014.34
5.4.40.0460.02914.36
5.4.30.0480.03014.33
5.4.20.0430.03314.22
5.4.10.0470.02814.28
5.4.00.0470.02814.03
5.3.290.0900.06714.70
5.3.280.1000.05014.64
5.3.270.1030.05014.64
5.3.260.1030.04714.50
5.3.250.0800.06014.70
5.3.240.1000.05014.61
5.3.230.0970.05714.62
5.3.220.0770.05714.54
5.3.210.0900.05314.56
5.3.200.0930.05014.57
5.3.190.1030.04314.55
5.3.180.0970.04714.48
5.3.170.1000.04314.48
5.3.160.1070.05014.52
5.3.150.0970.05714.57
5.3.140.1070.04014.56
5.3.130.1130.05714.44
5.3.120.1100.04714.51
5.3.110.0770.07014.60
5.3.100.1070.04714.02
5.3.90.0930.06014.11
5.3.80.1000.05314.01
5.3.70.1000.06313.93
5.3.60.1000.05713.98
5.3.50.1030.07313.98
5.3.40.1030.05713.94
5.3.30.0900.06013.90
5.3.20.1170.05713.60
5.3.10.0930.04313.64
5.3.00.0930.04713.61
5.2.170.0670.04711.28
5.2.160.0670.04711.13
5.2.150.0870.04311.09
5.2.140.0770.04311.17
5.2.130.0730.04711.13
5.2.120.0730.04711.07
5.2.110.0800.04011.14
5.2.100.0770.04011.07
5.2.90.0770.04011.16
5.2.80.0800.04011.13
5.2.70.0770.04711.08
5.2.60.0870.03310.96
5.2.50.0870.04011.04
5.2.40.0600.04711.14
5.2.30.0470.05010.96
5.2.20.0730.03711.00
5.2.10.0770.03310.84
5.2.00.0670.04010.76
5.1.60.0730.02310.00
5.1.50.0630.0339.97
5.1.40.0670.0379.97
5.1.30.0630.03710.50
5.1.20.0700.03310.33
5.1.10.0630.03310.08
5.1.00.0530.04710.14
5.0.50.0330.0308.67
5.0.40.0330.0278.47
5.0.30.0370.0408.23
5.0.20.0430.0308.32
5.0.10.0330.0278.29
5.0.00.0370.0378.19
4.4.90.0330.0205.88
4.4.80.0330.0205.92
4.4.70.0370.0175.90
4.4.60.0270.0275.90
4.4.50.0300.0235.91
4.4.40.0330.0335.92
4.4.30.0270.0275.91
4.4.20.0230.0305.93
4.4.10.0300.0235.98
4.4.00.0400.0335.88
4.3.110.0370.0235.83
4.3.100.0400.0175.82
4.3.90.0400.0175.80
4.3.80.0400.0335.77
4.3.70.0400.0175.83
4.3.60.0330.0235.81
4.3.50.0330.0205.78
4.3.40.0300.0375.75
4.3.30.0200.0204.77
4.3.20.0170.0234.77
4.3.10.0170.0234.77
4.3.00.0030.02014.47

preferences:
54.29 ms | 400 KiB | 5 Q