3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(); $a["100"] = true; echo "\$a is an associative map: "; var_export($a); $keys = array_keys($a); echo "It has these keys: "; var_export($keys); var_dump( is_string($keys[0]) );

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)
8.3.60.0080.00818.02
8.3.50.0110.00521.09
8.3.40.0150.00018.93
8.3.30.0080.00620.34
8.3.20.0110.00420.14
8.3.10.0050.00321.79
8.3.00.0080.00022.52
8.2.180.0130.00616.38
8.2.170.0070.00722.96
8.2.160.0070.00722.17
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0000.00820.76
8.2.110.0060.00322.21
8.2.100.0040.00717.91
8.2.90.0050.00317.97
8.2.80.0040.00417.97
8.2.70.0090.00017.63
8.2.60.0080.00017.93
8.2.50.0000.00818.07
8.2.40.0000.00819.95
8.2.30.0070.00019.39
8.2.20.0050.00317.65
8.2.10.0050.00217.56
8.2.00.0020.00517.73
8.1.280.0070.01025.92
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0060.00320.68
8.1.230.0090.00320.88
8.1.220.0090.00017.74
8.1.210.0030.00518.85
8.1.200.0060.00317.23
8.1.190.0040.00417.50
8.1.180.0000.00818.10
8.1.170.0080.00018.52
8.1.160.0040.00418.80
8.1.150.0030.00518.49
8.1.140.0000.00717.47
8.1.130.0070.00017.82
8.1.120.0000.00717.41
8.1.110.0080.00017.36
8.1.100.0040.00417.41
8.1.90.0070.00017.29
8.1.80.0030.00317.35
8.1.70.0080.00017.26
8.1.60.0090.00017.44
8.1.50.0080.00017.35
8.1.40.0040.00417.34
8.1.30.0000.00717.57
8.1.20.0030.00717.59
8.1.10.0030.00517.55
8.1.00.0080.00017.51
8.0.300.0040.00420.01
8.0.290.0080.00017.05
8.0.280.0080.00018.44
8.0.270.0000.00717.16
8.0.260.0000.00816.78
8.0.250.0070.00016.93
8.0.240.0000.00816.78
8.0.230.0030.00316.91
8.0.220.0030.00316.89
8.0.210.0000.00616.85
8.0.200.0000.00616.92
8.0.190.0000.00716.88
8.0.180.0040.00416.86
8.0.170.0040.00416.81
8.0.160.0030.00416.72
8.0.150.0000.00816.78
8.0.140.0050.00316.80
8.0.130.0000.00513.23
8.0.120.0040.00416.79
8.0.110.0070.00016.75
8.0.100.0040.00416.93
8.0.90.0080.00016.89
8.0.80.0120.00316.87
8.0.70.0040.00416.79
8.0.60.0080.00016.70
8.0.50.0030.00516.68
8.0.30.0060.01517.05
8.0.20.0060.01217.40
8.0.10.0050.00316.90
8.0.00.0080.00916.87
7.4.330.0000.00615.00
7.4.320.0030.00316.43
7.4.300.0000.00716.57
7.4.290.0000.00816.52
7.4.280.0000.00716.52
7.4.270.0000.00716.57
7.4.260.0060.00013.24
7.4.250.0000.00716.45
7.4.240.0000.00716.50
7.4.230.0030.00316.43
7.4.220.0070.01116.33
7.4.210.0080.00816.40
7.4.200.0000.00716.63
7.4.190.0060.00016.53
7.4.160.0070.00716.58
7.4.150.0090.00917.40
7.4.140.0080.01417.86
7.4.130.0060.01116.47
7.4.120.0110.00716.48
7.4.110.0030.01316.54
7.4.100.0100.00916.73
7.4.90.0110.00716.58
7.4.80.0110.00719.39
7.4.70.0070.01116.32
7.4.60.0000.02016.71
7.4.50.0030.00516.66
7.4.40.0090.00322.77
7.4.30.0130.01016.65
7.4.00.0000.01315.19
7.3.330.0000.00513.00
7.3.320.0030.00313.11
7.3.310.0040.00416.26
7.3.300.0060.00016.23
7.3.290.0100.00316.22
7.3.280.0070.01216.29
7.3.270.0070.01017.40
7.3.260.0110.00716.43
7.3.250.0080.01516.41
7.3.240.0130.00316.33
7.3.230.0100.00716.39
7.3.210.0140.00316.48
7.3.200.0130.00619.39
7.3.190.0130.00316.13
7.3.180.0100.00616.43
7.3.170.0050.01116.48
7.3.160.0040.01116.40
7.3.120.0090.00514.52
7.3.10.0030.01116.38
7.3.00.0000.01416.84
7.2.330.0110.00716.82
7.2.320.0100.00716.46
7.2.310.0150.00916.39
7.2.300.0120.00816.70
7.2.290.0100.00716.38
7.2.130.0030.01417.05
7.2.120.0070.01016.78
7.2.110.0000.01116.91
7.2.100.0060.00916.71
7.2.90.0130.00316.79
7.2.80.0030.00717.13
7.2.70.0030.01016.91
7.2.60.0030.01016.89
7.2.50.0130.00316.80
7.2.40.0030.00816.98
7.2.30.0060.01217.10
7.2.20.0130.00316.90
7.2.10.0110.00317.00
7.2.00.0030.00617.09
7.1.250.0030.01015.83
7.1.70.0040.00417.02
7.1.60.0090.00919.32
7.1.50.0060.01516.63
7.1.00.0070.04322.30
7.0.200.0040.00816.78
7.0.140.0030.07322.00
7.0.70.0030.05321.66
7.0.60.0070.06021.68
7.0.50.0070.05322.16
7.0.40.0030.08020.09
7.0.30.0030.04320.15
7.0.20.0000.09020.00
7.0.10.0030.06020.17
7.0.00.0170.07320.16
5.6.280.0000.07721.14
5.6.220.0000.08020.48
5.6.210.0130.04320.74
5.6.200.0030.05321.07
5.6.190.0130.07021.02
5.6.180.0100.07721.06
5.6.170.0070.04321.09
5.6.160.0100.08020.95
5.6.150.0000.06321.01
5.6.140.0130.07320.89
5.6.130.0130.07021.10
5.6.120.0030.09021.01
5.6.110.0070.07020.89
5.6.100.0030.08721.16
5.6.90.0100.08020.99
5.6.80.0030.08320.42
5.6.70.0030.05020.33
5.6.60.0000.08320.43
5.6.50.0070.07320.39
5.6.40.0000.08320.40
5.6.30.0030.05320.49
5.6.20.0070.06020.39
5.6.10.0000.08320.43
5.6.00.0070.07720.32
5.5.360.0000.03720.43
5.5.350.0030.06720.36
5.5.340.0100.07320.73
5.5.330.0070.04720.87
5.5.320.0000.08020.81
5.5.310.0030.04020.81
5.5.300.0100.07320.72
5.5.290.0130.06720.63
5.5.280.0000.05320.85
5.5.270.0130.08020.77
5.5.260.0070.07020.86
5.5.250.0000.08320.51
5.5.240.0100.07720.02
5.5.230.0030.04720.28
5.5.220.0030.06020.10
5.5.210.0070.08020.17
5.5.200.0070.06320.23
5.5.190.0030.05320.07
5.5.180.0030.08020.25
5.5.160.0070.07720.14
5.5.150.0100.07020.20
5.5.140.0000.08020.27
5.5.130.0070.07720.25
5.5.120.0100.08020.21
5.5.110.0100.07320.22
5.5.100.0030.05320.15
5.5.90.0070.07720.06
5.5.80.0100.06720.14
5.5.70.0030.08020.05
5.5.60.0030.08020.05
5.5.50.0070.06020.05
5.5.40.0030.08019.95
5.5.30.0000.06019.91
5.5.20.0070.08320.10
5.5.10.0000.08020.01
5.5.00.0000.08720.07
5.4.450.0000.07019.43
5.4.440.0130.07319.38
5.4.430.0070.07719.11
5.4.420.0000.08019.35
5.4.410.0000.07719.32
5.4.400.0030.07719.14
5.4.390.0000.08019.09
5.4.380.0070.07719.05
5.4.370.0030.07718.96
5.4.360.0070.04318.79
5.4.350.0030.08018.79
5.4.340.0100.07719.09
5.4.320.0030.08318.96
5.4.310.0030.07319.12
5.4.300.0070.08018.81
5.4.290.0000.08019.01
5.4.280.0000.08318.97
5.4.270.0100.07319.14
5.4.260.0070.07019.03
5.4.250.0030.08019.14
5.4.240.0100.04319.14
5.4.230.0100.07018.77
5.4.220.0030.07019.11
5.4.210.0100.06018.81
5.4.200.0130.07018.93
5.4.190.0000.08019.02
5.4.180.0100.07718.77
5.4.170.0070.08019.07
5.4.160.0070.07319.00
5.4.150.0070.07718.92
5.4.140.0000.05316.28
5.4.130.0030.07316.36
5.4.120.0070.06716.27
5.4.110.0000.08016.21
5.4.100.0030.07316.23
5.4.90.0070.07016.20
5.4.80.0030.07316.29
5.4.70.0030.05716.20
5.4.60.0000.07316.41
5.4.50.0030.07316.32
5.4.40.0070.06716.25
5.4.30.0030.07016.40
5.4.20.0030.06316.42
5.4.10.0070.07316.35
5.4.00.0030.07015.60
5.3.290.0030.07314.63
5.3.280.0030.06714.58
5.3.270.0030.07714.43
5.3.260.0000.05314.59
5.3.250.0000.06014.44
5.3.240.0030.05714.59
5.3.230.0000.08314.50
5.3.220.0070.07314.52
5.3.210.0000.08014.55
5.3.200.0070.06714.55
5.3.190.0030.07714.52
5.3.180.0030.05714.42
5.3.170.0030.06714.50
5.3.160.0030.08014.38
5.3.150.0130.06714.52
5.3.140.0000.08014.50
5.3.130.0030.04014.40
5.3.120.0070.07314.38
5.3.110.0070.06014.50
5.3.100.0000.08014.04
5.3.90.0130.06713.98
5.3.80.0030.06014.00
5.3.70.0000.06013.95
5.3.60.0030.07013.86
5.3.50.0200.05313.82
5.3.40.0030.06313.93
5.3.30.0000.08013.84
5.3.20.0070.07013.65
5.3.10.0000.07313.44
5.3.00.0030.07313.49
5.2.170.0030.06313.44
5.2.160.0000.06013.44
5.2.150.0070.06013.44
5.2.140.0030.05013.44
5.2.130.0000.06713.44
5.2.120.0000.03013.44
5.2.110.0030.06013.44
5.2.100.0030.06013.44
5.2.90.0030.06313.44
5.2.80.0030.05713.44
5.2.70.0000.07013.44
5.2.60.0000.04713.44
5.2.50.0030.04713.44
5.2.40.0030.05013.44
5.2.30.0030.06313.44
5.2.20.0070.06013.44
5.2.10.0030.05013.44
5.2.00.0030.04713.44
5.1.60.0030.05713.44
5.1.50.0000.05313.44
5.1.40.0000.04713.44
5.1.30.0030.04713.44
5.1.20.0100.05313.44
5.1.10.0030.05313.44
5.1.00.0070.03313.44
5.0.50.0030.04713.44
5.0.40.0000.03313.44
5.0.30.0030.05313.44
5.0.20.0000.04013.44
5.0.10.0030.04013.44
5.0.00.0030.06713.44
4.4.90.0000.02313.44
4.4.80.0030.03013.44
4.4.70.0030.03013.44
4.4.60.0000.03313.44
4.4.50.0000.03713.44
4.4.40.0000.04013.44
4.4.30.0030.03313.44
4.4.20.0030.03713.44
4.4.10.0030.03013.44
4.4.00.0000.05313.44
4.3.110.0000.03713.44
4.3.100.0000.02313.44
4.3.90.0030.03013.44
4.3.80.0030.05313.44
4.3.70.0000.03313.44
4.3.60.0000.03313.44
4.3.50.0000.03713.44
4.3.40.0070.04313.44
4.3.30.0030.03313.44
4.3.20.0000.02713.44
4.3.10.0000.03713.44
4.3.00.0030.03013.44

preferences:
37.99 ms | 401 KiB | 5 Q