3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [1=>[[100]], 2=>[[200]]]; $ref = &$arr[1]; $empty = 0; $ref[] = array_merge($empty, [101]); var_dump($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)
8.3.60.0090.00616.38
8.3.50.0090.00722.06
8.3.40.0090.01318.97
8.3.30.0040.01118.96
8.3.20.0000.00720.20
8.3.10.0050.00323.83
8.3.00.0080.00019.50
8.2.180.0070.01018.41
8.2.170.0100.01022.96
8.2.160.0030.01020.43
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0000.00826.16
8.2.120.0060.00322.14
8.2.110.0070.00719.35
8.2.100.0120.00017.91
8.2.90.0090.00017.84
8.2.80.0080.00017.97
8.2.70.0050.00317.50
8.2.60.0030.00618.03
8.2.50.0070.00318.07
8.2.40.0080.00019.66
8.2.30.0070.00018.11
8.2.20.0040.00417.64
8.2.10.0040.00418.11
8.2.00.0030.00717.65
8.1.280.0140.00025.92
8.1.270.0050.00321.99
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0060.00322.42
8.1.230.0060.00620.96
8.1.220.0090.00017.74
8.1.210.0000.00818.77
8.1.200.0000.00917.13
8.1.190.0030.00517.54
8.1.180.0080.00018.10
8.1.170.0080.00018.47
8.1.160.0040.00421.93
8.1.150.0000.00818.62
8.1.140.0000.00717.38
8.1.130.0000.00717.86
8.1.120.0000.00717.36
8.1.110.0070.00017.35
8.1.100.0000.00717.24
8.1.90.0040.00417.24
8.1.80.0070.00017.35
8.1.70.0080.00017.36
8.1.60.0070.00017.37
8.1.50.0000.00817.47
8.1.40.0000.00717.51
8.1.30.0080.00017.54
8.1.20.0040.00417.68
8.1.10.0060.00317.46
8.1.00.0040.00417.45
8.0.300.0000.00820.04
8.0.290.0040.00417.15
8.0.280.0030.00318.37
8.0.270.0000.00717.18
8.0.260.0030.00317.10
8.0.250.0080.00016.86
8.0.240.0030.00616.86
8.0.230.0030.00316.92
8.0.220.0000.00716.89
8.0.210.0030.00316.76
8.0.200.0000.00616.82
8.0.190.0090.00016.95
8.0.180.0070.00016.89
8.0.170.0050.00316.93
8.0.160.0000.00816.82
8.0.150.0070.00016.73
8.0.140.0040.00416.78
8.0.130.0060.00313.24
8.0.120.0030.00516.77
8.0.110.0020.00516.84
8.0.100.0000.00716.77
8.0.90.0050.00216.78
8.0.80.0110.00416.89
8.0.70.0040.00416.92
8.0.60.0040.00416.70
8.0.50.0000.00816.85
8.0.30.0100.00717.17
8.0.20.0110.00617.40
8.0.10.0050.00217.01
8.0.00.0130.00616.78
7.4.330.0000.00615.00
7.4.320.0030.00316.36
7.4.300.0070.00016.41
7.4.290.0070.00016.50
7.4.280.0030.00516.34
7.4.270.0000.00816.44
7.4.260.0030.00316.36
7.4.250.0040.00416.50
7.4.240.0050.00316.49
7.4.230.0060.00316.50
7.4.220.0070.01116.55
7.4.210.0070.00916.54
7.4.200.0070.00016.53
7.4.190.0040.00416.70
7.4.160.0030.01316.58
7.4.150.0070.01117.40
7.4.140.0060.01217.86
7.4.130.0050.01216.49
7.4.120.0040.01316.61
7.4.110.0120.00616.71
7.4.100.0170.00016.61
7.4.90.0060.01116.47
7.4.80.0110.01119.39
7.4.70.0120.00416.53
7.4.60.0090.00916.57
7.4.50.0080.00016.45
7.4.40.0040.00822.77
7.4.30.0130.00416.54
7.4.00.0060.00615.00
7.3.330.0030.00313.19
7.3.320.0060.00013.16
7.3.310.0000.00816.41
7.3.300.0000.00716.30
7.3.290.0110.00416.28
7.3.280.0120.00816.34
7.3.270.0120.00917.40
7.3.260.0030.01516.29
7.3.250.0070.01016.42
7.3.240.0030.01416.25
7.3.230.0100.00716.39
7.3.210.0080.00816.53
7.3.200.0150.00719.39
7.3.190.0080.01216.31
7.3.180.0060.00916.50
7.3.170.0060.01116.39
7.3.160.0030.01316.47
7.3.120.0080.00814.83
7.3.110.0030.01314.80
7.3.100.0060.01015.03
7.3.90.0030.01014.95
7.3.80.0040.01214.94
7.3.70.0070.00714.86
7.3.60.0040.01214.84
7.3.50.0030.00714.93
7.3.40.0060.00914.86
7.3.30.0000.01314.80
7.3.20.0180.00016.32
7.3.10.0090.00416.67
7.3.00.0030.00716.72
7.2.330.0140.00316.56
7.2.320.0040.01816.69
7.2.310.0100.01016.63
7.2.300.0090.00616.48
7.2.290.0090.01216.65
7.2.250.0110.00715.04
7.2.240.0070.01014.89
7.2.230.0070.01015.04
7.2.220.0070.00715.02
7.2.210.0000.01615.02
7.2.200.0040.00714.69
7.2.190.0070.01014.95
7.2.180.0040.01114.93
7.2.170.0070.00314.91
7.2.130.0030.01216.49
7.2.120.0060.01016.56
7.2.110.0070.00716.63
7.2.100.0000.01416.46
7.2.90.0070.01016.71
7.2.80.0080.00816.84
7.2.70.0090.00616.66
7.2.60.0050.00916.73
7.2.50.0000.01516.72
7.2.40.0060.00916.83
7.2.30.0070.00316.80
7.2.20.0040.01116.69
7.2.10.0120.00316.74
7.2.00.0060.00518.05
7.1.330.0000.01415.46
7.1.320.0070.01015.98
7.1.310.0030.01015.58
7.1.300.0120.00015.81
7.1.290.0110.00315.74
7.1.280.0030.00615.75
7.1.270.0100.01015.70
7.1.260.0060.01115.52
7.1.250.0040.01115.41
7.1.100.0030.01017.86
7.1.70.0000.01717.16
7.1.60.0140.01119.46
7.1.50.0120.01216.95
7.1.00.0000.08022.48
7.0.200.0100.00716.70
7.0.140.0030.07722.13
7.0.100.0070.08019.96
7.0.90.0000.07719.94
7.0.80.0130.07319.93
7.0.70.0030.05019.96
7.0.60.0070.08020.05
7.0.50.0030.07720.25
7.0.40.0030.09020.07
7.0.30.0100.08020.15
7.0.20.0170.07020.10
7.0.10.0130.07720.13
7.0.00.0130.07720.13
5.6.280.0000.07721.07
5.6.250.0070.06720.62
5.6.240.0100.08020.51
5.6.230.0100.08320.65
5.6.220.0070.07720.61
5.6.210.0100.07320.61
5.6.200.0000.07021.05
5.6.190.0070.08321.13
5.6.180.0070.08320.96
5.6.170.0000.05321.03
5.6.160.0000.08720.89
5.6.150.0070.07321.03
5.6.140.0030.05321.04
5.6.130.0070.07021.01
5.6.120.0070.03721.01
5.6.110.0030.04321.11
5.6.100.0030.04021.09
5.6.90.0070.04020.99
5.6.80.0030.04020.40
5.6.70.0070.03720.33
5.6.60.0030.04020.42
5.6.50.0070.03720.44
5.6.40.0130.05720.46
5.6.30.0030.03720.32
5.6.20.0000.05320.44
5.6.10.0000.04320.35
5.6.00.0100.05320.39
5.5.380.0070.07720.35
5.5.370.0030.05020.48
5.5.360.0070.08020.33
5.5.350.0070.04720.41
5.5.340.0100.04720.82
5.5.330.0100.06020.88
5.5.320.0100.08020.81
5.5.310.0070.07320.77
5.5.300.0170.07320.73
5.5.290.0030.05320.91
5.5.280.0070.08020.63
5.5.270.0000.04720.85
5.5.260.0000.04320.91
5.5.250.0030.04020.65
5.5.240.0030.04320.25
5.5.230.0200.02720.15
5.5.220.0000.04320.01
5.5.210.0070.03720.01
5.5.200.0070.04320.23
5.5.190.0130.04320.22
5.5.180.0030.04020.09
5.5.160.0130.03020.13
5.5.150.0130.04320.11
5.5.140.0030.04020.26
5.5.130.0100.03320.17
5.5.120.0000.04020.16
5.5.110.0030.04720.17
5.5.100.0100.03320.06
5.5.90.0030.04320.15
5.5.80.0070.03719.94
5.5.70.0030.04020.06
5.5.60.0070.03320.14
5.5.50.0030.03719.96
5.5.40.0030.06020.05
5.5.30.0100.04720.14
5.5.20.0030.04020.13
5.5.10.0030.04019.96
5.5.00.0030.04319.92
5.4.450.0170.07319.45
5.4.440.0070.04319.27
5.4.430.0070.05019.35
5.4.420.0100.03319.45
5.4.410.0100.03019.14
5.4.400.0000.06318.98
5.4.390.0030.05319.10
5.4.380.0070.06018.79
5.4.370.0030.05718.83
5.4.360.0000.07018.95
5.4.350.0000.05018.79
5.4.340.0030.04019.10
5.4.320.0000.05319.15
5.4.310.0170.05718.79
5.4.300.0000.04018.81
5.4.290.0030.03319.04
5.4.280.0000.04019.21
5.4.270.0030.03719.16
5.4.260.0030.04318.97
5.4.250.0000.03718.78
5.4.240.0070.03319.21
5.4.230.0030.03719.02
5.4.220.0030.03718.86
5.4.210.0070.04318.78
5.4.200.0100.03018.96
5.4.190.0100.03019.22
5.4.180.0070.04718.96
5.4.170.0070.03318.80
5.4.160.0100.03019.13
5.4.150.0030.03719.01
5.4.140.0000.04316.42
5.4.130.0000.04016.37
5.4.120.0100.03316.09
5.4.110.0070.07016.23
5.4.100.0100.06316.21
5.4.90.0100.07016.44
5.4.80.0000.07316.33
5.4.70.0130.06316.20
5.4.60.0000.08016.31
5.4.50.0100.06716.23
5.4.40.0100.06016.29
5.4.30.0100.06716.17
5.4.20.0130.06016.23
5.4.10.0130.06716.18
5.4.00.0100.07315.78
5.3.290.0030.04014.63
5.3.280.0070.03314.57
5.3.270.0070.03314.45
5.3.260.0030.04014.48
5.3.250.0000.04014.47
5.3.240.0000.04014.45
5.3.230.0030.05014.44
5.3.220.0000.05314.53
5.3.210.0070.03314.52
5.3.200.0130.07014.52
5.3.190.0170.06014.42
5.3.180.0030.06714.50
5.3.170.0100.07014.56
5.3.160.0130.06714.39
5.3.150.0170.07014.51
5.3.140.0130.06314.55
5.3.130.0030.05714.53
5.3.120.0100.06314.50
5.3.110.0200.05014.39
5.3.100.0100.06714.14
5.3.90.0100.06014.14
5.3.80.0070.07714.14
5.3.70.0030.07314.14
5.3.60.0030.07714.14
5.3.50.0000.08014.14
5.3.40.0030.07014.14
5.3.30.0070.04714.14
5.3.20.0070.07314.14
5.3.10.0100.07014.14
5.3.00.0130.05714.14
5.2.170.0000.07014.14
5.2.160.0070.06314.14
5.2.150.0070.06314.14
5.2.140.0070.06014.14
5.2.130.0070.06014.14
5.2.120.0000.06314.14
5.2.110.0130.05014.14
5.2.100.0070.05714.14
5.2.90.0000.06314.14
5.2.80.0100.03714.14
5.2.70.0070.05714.14
5.2.60.0070.05314.14
5.2.50.0030.03714.14
5.2.40.0030.06314.14
5.2.30.0070.04014.14
5.2.20.0030.06314.14
5.2.10.0070.06014.14
5.2.00.0030.06314.14
5.1.60.0200.04314.14
5.1.50.0030.05314.14
5.1.40.0000.04014.14
5.1.30.0070.05314.14
5.1.20.0030.05714.14
5.1.10.0030.04014.14
5.1.00.0070.05314.14
5.0.50.0030.02314.14
5.0.40.0000.02014.14
5.0.30.0000.05314.14
5.0.20.0030.04014.14
5.0.10.0000.04714.14
5.0.00.0030.06014.14
4.4.90.0070.02714.14
4.4.80.0000.02014.14
4.4.70.0000.03714.14
4.4.60.0030.01714.14
4.4.50.0100.02714.14
4.4.40.0070.05314.14
4.4.30.0070.03314.14
4.4.20.0030.03714.14
4.4.10.0030.03014.14
4.4.00.0000.05714.14
4.3.110.0000.03714.14
4.3.100.0030.03314.14
4.3.90.0000.03014.14
4.3.80.0000.04314.14
4.3.70.0070.01314.14
4.3.60.0100.02714.14
4.3.50.0000.03714.14
4.3.40.0070.02314.14
4.3.30.0000.03014.14
4.3.20.0000.03714.14
4.3.10.0030.03714.14
4.3.00.0030.01714.14

preferences:
43.39 ms | 400 KiB | 5 Q