3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'); $str = ltrim(strrev(chunk_split(implode(array_reverse($arr)), 3, ';')), ';'); echo $str;

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)
8.3.40.0040.01118.59
8.3.30.0070.00719.08
8.3.20.0040.00420.26
8.3.10.0030.00520.40
8.3.00.0000.00819.38
8.2.170.0110.00422.96
8.2.160.0040.01120.38
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0080.00026.16
8.2.120.0080.00020.68
8.2.110.0000.00920.90
8.2.100.0110.00017.91
8.2.90.0000.00818.30
8.2.80.0040.00417.97
8.2.70.0000.00818.04
8.2.60.0000.00818.03
8.2.50.0040.00418.10
8.2.40.0060.00319.34
8.2.30.0040.00419.29
8.2.20.0070.00017.66
8.2.10.0040.00418.11
8.2.00.0040.00417.61
8.1.270.0000.00823.86
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0080.00417.45
8.1.230.0040.00820.89
8.1.220.0030.00617.79
8.1.210.0030.00518.96
8.1.200.0090.00017.22
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0030.00618.46
8.1.160.0020.00519.00
8.1.150.0050.00218.83
8.1.140.0040.00417.39
8.1.130.0030.00517.82
8.1.120.0000.00717.30
8.1.110.0040.00417.38
8.1.100.0070.00017.35
8.1.90.0080.00017.37
8.1.80.0040.00417.31
8.1.70.0030.00317.26
8.1.60.0090.00017.39
8.1.50.0040.00417.46
8.1.40.0000.00717.45
8.1.30.0040.00417.55
8.1.20.0000.00717.47
8.1.10.0030.00617.46
8.1.00.0000.00717.31
8.0.300.0000.00719.64
8.0.290.0080.00016.75
8.0.280.0030.00318.40
8.0.270.0040.00417.16
8.0.260.0000.00717.16
8.0.250.0070.00016.91
8.0.240.0050.00216.96
8.0.230.0000.00716.86
8.0.220.0070.00016.70
8.0.210.0050.00316.86
8.0.200.0070.00016.85
8.0.190.0000.00716.78
8.0.180.0000.00716.78
8.0.170.0040.00416.87
8.0.160.0000.00716.83
8.0.150.0000.00716.65
8.0.140.0050.00316.73
8.0.130.0000.00713.28
8.0.120.0000.00716.70
8.0.110.0070.00016.64
8.0.100.0040.00416.86
8.0.90.0040.00416.89
8.0.80.0070.00716.75
8.0.70.0000.00716.73
8.0.60.0030.00316.62
8.0.50.0000.00716.88
8.0.30.0110.01117.08
8.0.20.0120.00817.40
8.0.10.0080.00016.76
8.0.00.0100.00716.70
7.4.330.0000.00515.00
7.4.320.0030.00316.35
7.4.300.0060.00016.53
7.4.290.0030.00316.53
7.4.280.0000.00816.31
7.4.270.0070.00016.44
7.4.260.0000.00816.41
7.4.250.0000.00816.53
7.4.240.0000.00716.38
7.4.230.0000.00816.63
7.4.220.0090.00916.45
7.4.210.0120.00316.47
7.4.200.0030.00316.38
7.4.160.0100.01316.58
7.4.150.0100.00717.40
7.4.140.0100.00817.86
7.4.130.0050.01116.52
7.4.120.0090.01216.43
7.4.110.0060.01016.39
7.4.100.0110.00716.52
7.4.90.0140.00316.48
7.4.80.0050.01118.80
7.4.70.0210.00316.48
7.4.60.0140.00316.35
7.4.50.0000.00816.49
7.4.40.0120.00716.33
7.4.30.0100.00716.33
7.4.10.0000.01715.02
7.4.00.0070.00814.82
7.3.330.0000.00513.00
7.3.320.0030.00313.13
7.3.310.0030.00316.29
7.3.300.0070.00016.21
7.3.290.0040.01116.21
7.3.280.0060.01316.20
7.3.270.0120.00617.40
7.3.260.0210.00616.29
7.3.250.0150.00316.38
7.3.240.0090.00916.48
7.3.230.0070.01016.39
7.3.210.0060.01616.14
7.3.200.0100.01319.39
7.3.190.0110.00716.23
7.3.180.0110.00516.64
7.3.170.0040.01416.53
7.3.160.0100.00616.57
7.3.130.0090.00414.68
7.3.120.0090.00614.51
7.3.110.0140.00714.44
7.3.100.0030.00914.92
7.3.90.0030.01214.66
7.3.80.0060.01015.11
7.3.70.0100.00714.77
7.3.60.0030.01014.66
7.3.50.0000.00914.75
7.3.40.0030.01014.81
7.3.30.0080.00014.54
7.3.20.0000.00916.55
7.3.10.0030.01216.61
7.3.00.0030.00916.49
7.2.330.0100.00716.56
7.2.320.0090.01316.70
7.2.310.0100.00716.29
7.2.300.0000.01716.59
7.2.290.0070.01016.39
7.2.260.0070.01414.76
7.2.250.0090.00614.57
7.2.240.0080.00814.73
7.2.230.0030.01015.14
7.2.220.0080.00814.96
7.2.210.0060.00615.20
7.2.200.0040.00414.66
7.2.190.0100.00315.05
7.2.180.0110.00015.12
7.2.170.0000.01215.05
7.2.160.0000.01115.06
7.2.150.0030.00716.86
7.2.140.0090.00616.58
7.2.130.0040.01116.76
7.2.120.0060.00816.95
7.2.110.0100.00316.77
7.2.100.0060.01016.80
7.2.90.0050.00816.83
7.2.80.0060.00616.70
7.2.70.0040.00716.86
7.2.60.0090.00616.56
7.2.50.0070.00316.80
7.2.40.0080.00516.80
7.2.30.0090.00716.95
7.2.20.0060.00616.73
7.2.10.0050.00916.84
7.2.00.0040.01117.57
7.1.330.0060.00615.92
7.1.320.0090.00615.67
7.1.310.0030.01315.74
7.1.300.0040.01115.83
7.1.290.0030.00615.86
7.1.280.0030.00915.75
7.1.270.0050.00515.99
7.1.260.0060.00615.49
7.1.250.0000.01315.87
7.1.240.0040.00815.68
7.1.230.0070.00715.58
7.1.220.0050.00815.43
7.1.210.0070.00515.87
7.1.200.0060.00615.74
7.1.190.0060.00515.65
7.1.180.0060.00415.63
7.1.170.0050.00415.72
7.1.160.0060.00515.76
7.1.150.0030.00815.77
7.1.140.0060.00415.86
7.1.130.0020.01215.82
7.1.120.0070.00715.86
7.1.110.0030.00715.82
7.1.100.0040.00716.48
7.1.90.0090.00715.73
7.1.80.0080.00715.76
7.1.70.0020.00616.22
7.1.60.0060.00716.92
7.1.50.0080.00716.21
7.1.40.0040.01315.73
7.1.30.0070.00715.56
7.1.20.0000.01215.80
7.1.10.0050.00515.76
7.1.00.0040.03017.93
7.0.330.0090.00315.45
7.0.320.0080.00515.53
7.0.310.0050.01015.47
7.0.300.0070.00415.43
7.0.290.0080.00715.29
7.0.280.0050.00815.38
7.0.270.0090.00315.37
7.0.260.0100.00315.21
7.0.250.0090.00315.25
7.0.240.0020.00915.38
7.0.230.0030.00715.30
7.0.220.0030.01115.33
7.0.210.0050.00715.32
7.0.200.0010.01115.94
7.0.190.0090.00915.41
7.0.180.0050.00815.44
7.0.170.0080.00615.38
7.0.160.0110.00315.43
7.0.150.0030.00715.41
7.0.140.0020.03017.58
7.0.130.0070.00615.35
7.0.120.0070.00415.35
7.0.110.0020.00715.36
7.0.100.0060.00715.42
7.0.90.0080.00515.13
7.0.80.0060.00515.37
7.0.70.0060.00315.23
7.0.60.0050.03316.86
7.0.50.0080.03016.20
7.0.40.0080.01615.56
7.0.30.0070.02515.75
7.0.20.0190.02815.69
7.0.10.0110.02815.70
7.0.00.0060.03215.70
5.6.400.0080.00414.46
5.6.390.0080.00614.59
5.6.380.0020.00814.27
5.6.370.0050.00914.29
5.6.360.0060.00814.24
5.6.350.0110.00514.30
5.6.340.0050.00514.34
5.6.330.0080.00614.34
5.6.320.0050.00414.24
5.6.310.0030.00714.56
5.6.300.0070.00714.34
5.6.290.0080.00514.32
5.6.280.0080.00514.18
5.6.270.0040.00814.30
5.6.260.0020.00914.44
5.6.250.0100.00514.34
5.6.240.0020.01214.46
5.6.230.0030.01214.30
5.6.220.0030.00714.37
5.6.210.0070.02616.29
5.6.200.0020.03715.51
5.6.190.0040.02016.24
5.6.180.0120.02016.37
5.6.170.0110.03216.29
5.6.160.0070.01916.30
5.6.150.0090.01415.56
5.6.140.0060.03315.45
5.6.130.0070.01915.64
5.6.120.0090.01716.47
5.6.110.0060.01816.56
5.6.100.0080.03216.43
5.6.90.0080.03016.46
5.6.80.0090.02116.33
5.6.70.0040.00914.09
5.6.60.0060.00814.32
5.6.50.0100.00614.21
5.6.40.0060.01014.11
5.6.30.0070.00914.13
5.6.20.0070.00914.15
5.6.10.0090.00914.36
5.6.00.0050.01314.11
5.5.380.0060.00612.78
5.5.370.0080.00512.72
5.5.360.0020.01012.68
5.5.350.0040.02815.26
5.5.340.0000.03914.35
5.5.330.0030.02015.15
5.5.320.0040.02615.11
5.5.310.0100.02015.25
5.5.300.0060.03114.31
5.5.290.0060.01814.49
5.5.280.0150.01715.40
5.5.270.0060.02515.24
5.5.260.0080.02815.33
5.5.250.0050.03015.22
5.5.240.0090.02714.96
5.5.230.0020.00712.37
5.5.220.0030.00712.54
5.5.210.0020.01112.67
5.5.200.0030.00812.60
5.5.190.0020.00812.54
5.5.180.0050.00712.58
5.5.170.0070.00612.38
5.5.160.0070.00712.42
5.5.150.0050.00512.54
5.5.140.0060.00512.59
5.5.130.0100.00312.47
5.5.120.0100.00212.40
5.5.110.0050.00712.36
5.5.100.0040.00612.54
5.5.90.0060.00512.23
5.5.80.0040.00812.41
5.5.70.0100.00212.52
5.5.60.0050.00512.46
5.5.50.0030.00812.39
5.5.40.0060.00612.41
5.5.30.0120.00512.53
5.5.20.0050.00512.36
5.5.10.0020.00812.40
5.5.00.0060.00712.52
5.4.450.1460.01613.73
5.4.440.1180.01313.53
5.4.430.1180.01613.72
5.4.420.1310.01513.67
5.4.410.1290.01413.72
5.4.400.1120.02013.64
5.4.390.1260.01513.59
5.4.380.1290.01413.50
5.4.370.1370.01913.59
5.4.360.1490.01413.55
5.4.350.1470.01813.76
5.4.340.1430.01413.52
5.4.330.0030.00710.89
5.4.320.1450.01413.61
5.4.310.1260.01613.59
5.4.300.1270.02013.54
5.4.290.1290.01213.64
5.4.280.1130.01713.64
5.4.270.1200.01613.58
5.4.260.1450.01313.67
5.4.250.1490.01613.59
5.4.240.1500.01613.66
5.4.230.1390.01213.50
5.4.220.1140.01713.78
5.4.210.0780.01513.57
5.4.200.0890.01513.64
5.4.190.0960.01313.58
5.4.180.1130.01413.68
5.4.170.1070.01513.55
5.4.160.1100.01313.58
5.4.150.1130.01613.49
5.4.140.1130.01212.59
5.4.130.1220.01212.73
5.4.120.1400.01612.62
5.4.110.1280.01712.80
5.4.100.1240.01512.65
5.4.90.1230.01712.78
5.4.80.1160.01612.71
5.4.70.1490.01512.70
5.4.60.1460.01212.80
5.4.50.1320.01412.88
5.4.40.1480.01312.76
5.4.30.1410.01512.85
5.4.20.1520.01712.64
5.4.10.1270.01612.83
5.4.00.1280.01212.54
5.3.290.2030.02212.54
5.3.280.1850.02212.43
5.3.270.1480.02012.51
5.3.260.1730.02212.46
5.3.250.1310.01912.49
5.3.240.1850.02312.37
5.3.230.1860.01812.44
5.3.220.1800.02512.39
5.3.210.1800.02312.34
5.3.200.1950.02012.29
5.3.190.1790.01712.38
5.3.180.2050.01612.54
5.3.170.1850.01712.42
5.3.160.1820.02412.30
5.3.150.1860.01812.43
5.3.140.2150.02712.44
5.3.130.2100.01612.39
5.3.120.2100.02712.29
5.3.110.2110.02012.39
5.3.100.1800.01812.16
5.3.90.1870.02012.23
5.3.80.1800.02212.17
5.3.70.1770.01311.96
5.3.60.1940.01712.20
5.3.50.1950.01812.03
5.3.40.1850.02511.92
5.3.30.2130.02012.08
5.3.20.2050.02511.95
5.3.10.2080.02111.82
5.3.00.2180.02211.72
5.2.170.1570.01410.41
5.2.160.1610.01810.43
5.2.150.1770.01810.42
5.2.140.1670.02110.32
5.2.130.1690.01710.39
5.2.120.1660.01510.41
5.2.110.1800.01710.35
5.2.100.1710.01710.32
5.2.90.1560.01810.30
5.2.80.1510.01610.31
5.2.70.1550.02110.45
5.2.60.1490.01710.38
5.2.50.1350.02010.30
5.2.40.1330.01810.27
5.2.30.1300.01510.24
5.2.20.1550.01510.26
5.2.10.1200.01510.28
5.2.00.1270.01510.13
5.1.60.1230.0169.81
5.1.50.1150.0149.76
5.1.40.1130.0159.75
5.1.30.1190.0129.96
5.1.20.1230.01410.00
5.1.10.1360.0169.85
5.1.00.1740.0129.94
5.0.50.0630.0109.07
5.0.40.0620.0159.05
5.0.30.0730.0168.93
5.0.20.0730.0108.96
5.0.10.0570.0138.85
5.0.00.0700.0198.90
4.4.90.0670.0077.87
4.4.80.0630.0087.87
4.4.70.0580.0107.87
4.4.60.0680.0107.87
4.4.50.0690.0107.87
4.4.40.0650.0127.87
4.4.30.0600.0077.87
4.4.20.0570.0127.87
4.4.10.0580.0127.87
4.4.00.0700.0177.87
4.3.110.0790.0087.87
4.3.100.0870.0107.87
4.3.90.0660.0077.87
4.3.80.0850.0137.87
4.3.70.0790.0077.85
4.3.60.0720.0117.85
4.3.50.0710.0107.85
4.3.40.0630.0167.85
4.3.30.0360.0077.85
4.3.20.0360.0117.85
4.3.10.0460.0177.85
4.3.00.0300.0127.85

preferences:
47.5 ms | 400 KiB | 5 Q