3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = "asdfaksjdhflkajsdhflkajshdflkja sldk jahlk sdfhal kjdsh lfkajs dhflkja shdlk askldj hafl ksjdhfl kajsdh flkasd hf"; $count = 0; for ($i=50; $i>0;$i--) { if ($x[i] == " ") { $count = $i; break; } } echo substr($x,$count);

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)
8.3.60.0140.00718.43
8.3.50.0090.01222.05
8.3.40.0090.00618.85
8.3.30.0140.00719.14
8.3.20.0070.00020.33
8.3.10.0000.00723.70
8.3.00.0100.00017.35
8.2.180.0110.01116.63
8.2.170.0070.00722.96
8.2.160.0070.00720.39
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0070.00022.28
8.2.110.0060.00320.50
8.2.100.0090.00317.95
8.2.90.0080.00019.23
8.2.80.0000.00817.97
8.2.70.0030.00617.50
8.2.60.0000.00917.93
8.2.50.0060.00318.07
8.2.40.0000.00819.82
8.2.30.0060.00317.95
8.2.20.0080.00017.82
8.2.10.0080.00018.11
8.2.00.0060.00317.72
8.1.280.0030.01225.92
8.1.270.0090.00623.88
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0030.00623.93
8.1.230.0030.00718.97
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0040.00417.35
8.1.180.0040.00418.10
8.1.170.0000.00818.47
8.1.160.0050.00222.13
8.1.150.0040.00418.81
8.1.140.0070.00017.33
8.1.130.0000.00717.83
8.1.120.0070.00017.44
8.1.110.0000.00817.49
8.1.100.0000.00717.43
8.1.90.0080.00017.38
8.1.80.0040.00417.48
8.1.70.0030.00317.41
8.1.60.0040.00417.42
8.1.50.0040.00417.44
8.1.40.0050.00317.48
8.1.30.0000.00817.64
8.1.20.0030.00517.55
8.1.10.0030.00617.47
8.1.00.0040.00417.42
8.0.300.0060.00318.77
8.0.290.0000.00716.63
8.0.280.0000.00818.32
8.0.270.0030.00317.32
8.0.260.0030.00317.18
8.0.250.0030.00316.93
8.0.240.0000.00717.09
8.0.230.0070.00017.01
8.0.220.0060.00016.97
8.0.210.0030.00416.85
8.0.200.0030.00516.91
8.0.190.0070.00016.91
8.0.180.0040.00416.95
8.0.170.0040.00416.98
8.0.160.0030.00516.92
8.0.150.0070.00016.89
8.0.140.0040.00416.92
8.0.130.0000.00513.35
8.0.120.0080.00017.02
8.0.110.0000.00716.92
8.0.100.0080.00016.92
8.0.90.0000.00716.82
8.0.80.0100.00716.96
8.0.70.0030.00516.94
8.0.60.0030.00417.01
8.0.50.0000.00716.95
8.0.30.0070.01217.05
8.0.20.0080.01017.40
8.0.10.0000.00716.91
8.0.00.0080.00916.80
7.4.330.0000.00515.00
7.4.320.0060.00016.56
7.4.300.0030.00316.52
7.4.290.0040.00416.59
7.4.280.0070.00016.36
7.4.270.0040.00416.61
7.4.260.0050.00516.39
7.4.250.0040.00416.38
7.4.240.0050.00216.58
7.4.230.0040.00416.62
7.4.220.0180.00516.46
7.4.210.0030.01216.57
7.4.200.0040.00416.63
7.4.160.0100.00716.77
7.4.150.0100.01017.40
7.4.140.0140.00617.86
7.4.130.0200.00316.37
7.4.120.0040.01416.63
7.4.110.0090.00916.66
7.4.100.0040.01516.52
7.4.90.0190.00616.60
7.4.80.0150.00419.39
7.4.70.0030.01316.59
7.4.60.0060.01016.57
7.4.50.0030.00616.57
7.4.40.0170.00716.73
7.4.30.0150.00716.57
7.4.00.0020.01714.81
7.3.330.0030.00313.23
7.3.320.0030.00313.21
7.3.310.0000.00716.42
7.3.300.0030.00316.23
7.3.290.0130.00316.35
7.3.280.0090.01016.34
7.3.270.0140.00317.40
7.3.260.0040.01316.59
7.3.240.0190.00716.52
7.3.230.0160.00316.59
7.3.210.0080.01116.35
7.3.200.0130.01019.39
7.3.190.0060.01316.32
7.3.180.0100.01016.36
7.3.170.0060.01116.46
7.3.160.0080.00816.32
7.3.120.0090.00914.90
7.3.110.0040.01514.82
7.3.100.0000.01315.03
7.3.90.0030.01315.03
7.3.80.0040.01215.09
7.3.70.0070.00714.85
7.3.60.0090.00615.00
7.3.50.0030.01615.04
7.3.40.0070.00714.94
7.3.30.0070.00715.02
7.3.20.0070.00716.64
7.3.10.0050.00716.71
7.3.00.0040.01116.60
7.2.330.0110.00816.71
7.2.320.0100.01016.50
7.2.310.0190.00616.75
7.2.300.0070.01116.68
7.2.290.0140.01016.73
7.2.250.0030.01414.98
7.2.240.0110.00714.98
7.2.230.0030.01314.98
7.2.220.0110.00715.21
7.2.210.0030.01415.28
7.2.200.0030.00915.01
7.2.190.0110.00414.91
7.2.180.0130.00615.05
7.2.170.0060.01314.76
7.2.160.0040.01115.01
7.2.150.0060.00617.16
7.2.140.0070.00417.08
7.2.130.0050.00916.85
7.2.120.0050.01016.75
7.2.110.0070.00916.89
7.2.100.0080.00716.84
7.2.90.0040.01016.79
7.2.80.0110.00316.89
7.2.70.0090.00416.68
7.2.60.0080.00516.87
7.2.50.0070.00516.87
7.2.40.0080.00616.81
7.2.30.0020.01016.89
7.2.20.0090.00716.88
7.2.10.0050.00916.92
7.2.00.0070.00717.65
7.1.330.0030.01215.85
7.1.320.0080.00415.79
7.1.310.0100.00315.69
7.1.300.0040.01115.78
7.1.290.0100.01015.82
7.1.280.0060.00315.82
7.1.270.0060.00315.81
7.1.260.0100.00315.79
7.1.250.0060.00815.76
7.1.240.0120.00315.43
7.1.230.0030.00715.76
7.1.220.0130.00015.70
7.1.210.0130.00015.47
7.1.200.0070.00615.59
7.1.190.0080.00815.49
7.1.180.0040.00815.59
7.1.170.0080.00815.69
7.1.160.0000.01215.81
7.1.150.0060.00915.43
7.1.140.0060.00615.81
7.1.130.0070.01015.73
7.1.120.0040.00715.52
7.1.110.0120.00415.60
7.1.100.0060.00616.68
7.1.90.0100.00315.77
7.1.80.0070.00715.77
7.1.70.0040.00916.47
7.1.60.0080.01017.49
7.1.50.0020.01716.23
7.1.40.0120.00015.68
7.1.30.0070.00315.67
7.1.20.0070.00715.81
7.1.10.0000.01515.77
7.1.00.0040.04119.07
7.0.330.0000.01715.54
7.0.320.0060.00315.50
7.0.310.0090.00315.53
7.0.300.0080.00415.50
7.0.290.0100.00015.51
7.0.280.0000.01615.29
7.0.270.0000.01415.46
7.0.260.0060.00915.51
7.0.250.0060.00315.46
7.0.240.0070.00715.50
7.0.230.0040.00715.27
7.0.220.0090.00315.54
7.0.210.0030.00715.61
7.0.200.0040.00615.86
7.0.190.0040.00715.42
7.0.180.0070.00715.56
7.0.170.0030.00615.11
7.0.160.0090.00315.35
7.0.150.0090.00015.41
7.0.140.0060.04018.66
7.0.130.0070.00715.31
7.0.120.0070.00715.50
7.0.110.0090.04717.53
7.0.100.0080.04317.65
7.0.90.0060.04817.58
7.0.80.0120.03817.71
7.0.70.0130.03617.65
7.0.60.0060.03617.65
7.0.50.0060.04317.63
7.0.40.0060.04616.62
7.0.30.0020.04216.60
7.0.20.0140.03116.64
7.0.10.0080.04216.68
7.0.00.0100.03616.53
5.6.400.0070.01014.79
5.6.390.0070.01014.43
5.6.380.0070.00714.63
5.6.370.0030.00914.44
5.6.360.0040.00414.30
5.6.350.0040.01114.70
5.6.340.0090.00614.41
5.6.330.0030.00714.25
5.6.320.0030.00514.16
5.6.310.0090.00614.63
5.6.300.0000.01713.94
5.6.290.0060.01314.46
5.6.280.0030.04217.63
5.6.270.0070.00314.27
5.6.260.0080.04717.25
5.6.250.0110.04617.53
5.6.240.0050.02817.48
5.6.230.0050.04017.47
5.6.220.0120.02317.54
5.6.210.0080.04317.32
5.6.200.0020.04417.42
5.6.190.0090.02817.40
5.6.180.0070.04217.60
5.6.170.0050.04317.36
5.6.160.0050.02517.43
5.6.150.0050.04517.64
5.6.140.0030.05017.39
5.6.130.0120.04017.48
5.6.120.0070.02817.43
5.6.110.0130.03217.35
5.6.100.0110.02217.55
5.6.90.0020.03317.47
5.6.80.0050.03917.03
5.6.70.0090.02317.11
5.6.60.0050.04217.15
5.6.50.0060.03617.11
5.6.40.0030.04417.12
5.6.30.0090.03417.19
5.6.20.0110.04017.22
5.6.10.0030.02817.13
5.6.00.0090.04316.90
5.5.380.0040.04915.91
5.5.370.0100.03816.02
5.5.360.0050.02915.89
5.5.350.0100.05415.80
5.5.340.0080.03816.23
5.5.330.0070.04215.92
5.5.320.0080.04016.01
5.5.310.0110.03816.20
5.5.300.0100.03916.34
5.5.290.0070.04416.11
5.5.280.0030.04416.14
5.5.270.0100.03016.12
5.5.260.0060.04116.34
5.5.250.0070.02715.85
5.5.240.0030.04215.51
5.5.230.0070.04415.76
5.5.220.0050.03915.56
5.5.210.0070.03915.79
5.5.200.0060.04115.88
5.5.190.0030.04715.91
5.5.180.0080.04115.70
5.5.170.0070.00713.78
5.5.160.0020.04515.68
5.5.150.0040.04415.68
5.5.140.0080.04015.68
5.5.130.0080.02115.69
5.5.120.0050.04415.66
5.5.110.0080.03815.82
5.5.100.0080.04415.58
5.5.90.0050.04515.81
5.5.80.0080.04115.57
5.5.70.0120.02515.70
5.5.60.0110.03615.61
5.5.50.0000.03415.53
5.5.40.0050.02715.69
5.5.30.0050.04215.67
5.5.20.0020.05015.91
5.5.10.0050.04315.65
5.5.00.0070.04315.85
5.4.450.0030.03015.10
5.4.440.0020.02515.24
5.4.430.0080.04115.23
5.4.420.0070.02215.20
5.4.410.0050.03815.10
5.4.400.0110.01715.04
5.4.390.0070.02015.03
5.4.380.0020.02214.94
5.4.370.0040.02415.02
5.4.360.0060.03814.99
5.4.350.0050.03215.00
5.4.340.0050.03515.12
5.4.330.0000.01311.01
5.4.320.0070.03515.01
5.4.310.0070.03915.12
5.4.300.0090.03914.85
5.4.290.0080.03915.06
5.4.280.0000.04314.91
5.4.270.0050.04114.94
5.4.260.0040.04015.03
5.4.250.0020.04414.98
5.4.240.0050.05314.94
5.4.230.0070.04415.08
5.4.220.0070.04415.07
5.4.210.0100.03514.96
5.4.200.0050.04115.10
5.4.190.0110.03514.98
5.4.180.0050.04315.11
5.4.170.0080.02314.96
5.4.160.0020.02814.90
5.4.150.0030.01814.95
5.4.140.0090.02713.63
5.4.130.0050.04313.63
5.4.120.0080.03813.58
5.4.110.0070.03613.54
5.4.100.0020.03013.62
5.4.90.0080.04013.60
5.4.80.0050.03713.79
5.4.70.0050.02913.58
5.4.60.0060.02113.58
5.4.50.0090.03713.82
5.4.40.0080.03313.83
5.4.30.0030.02513.62
5.4.20.0050.01713.74
5.4.10.0060.01813.44
5.4.00.0000.02613.20
5.3.290.0130.07014.59
5.3.280.0100.07714.38
5.3.270.0030.04014.70
5.3.260.0070.07314.59
5.3.250.0070.07714.54
5.3.240.0030.03714.43
5.3.230.0170.07014.54
5.3.220.0130.06714.66
5.3.210.0170.09014.62
5.3.200.0030.06714.39
5.3.190.0070.07314.48
5.3.180.0070.07014.34
5.3.170.0030.06014.59
5.3.160.0030.06314.41
5.3.150.0030.04714.58
5.3.140.0000.03714.45
5.3.130.0070.05714.54
5.3.120.0030.06714.44
5.3.110.0030.03314.39
5.3.100.0070.06013.89
5.3.90.0030.05713.92
5.3.80.0000.05713.86
5.3.70.0100.03013.89
5.3.60.0100.05714.10
5.3.50.0070.03713.95
5.3.40.0070.05713.79
5.3.30.0030.06013.84
5.3.20.0100.06313.58
5.3.10.0030.04013.52
5.3.00.0030.07013.53
5.2.170.0000.05711.30
5.2.160.0030.02311.03
5.2.150.0000.03011.07
5.2.140.0070.06311.30
5.2.130.0030.04711.11
5.2.120.0000.06011.02
5.2.110.0000.06310.99
5.2.100.0030.02311.27
5.2.90.0070.04311.26
5.2.80.0000.03310.98
5.2.70.0070.04311.25
5.2.60.0100.05311.20
5.2.50.0070.05011.01
5.2.40.0000.05710.91
5.2.30.0000.02710.90
5.2.20.0000.03710.90
5.2.10.0000.03011.08
5.2.00.0030.03010.79
5.1.60.0030.02010.02
5.1.50.0000.02310.02
5.1.40.0030.03010.02
5.1.30.0000.02710.24
5.1.20.0000.02710.27
5.1.10.0000.02710.07
5.1.00.0030.02710.02
5.0.50.0030.02010.02
5.0.40.0030.02010.02
5.0.30.0000.05010.02
5.0.20.0000.02010.02
5.0.10.0000.02710.02
5.0.00.0100.02010.02
4.4.90.0030.02310.02
4.4.80.0030.03010.02
4.4.70.0000.01710.02
4.4.60.0000.01310.02
4.4.50.0000.01710.02
4.4.40.0000.02710.02
4.4.30.0000.01710.02
4.4.20.0030.01310.02
4.4.10.0000.02010.02
4.4.00.0030.02310.02
4.3.110.0000.02010.02
4.3.100.0000.01310.02
4.3.90.0000.01710.02
4.3.80.0000.02310.02
4.3.70.0000.02310.02
4.3.60.0000.03010.02
4.3.50.0030.01310.02
4.3.40.0000.02710.02
4.3.30.0000.01310.02
4.3.20.0000.02010.02
4.3.10.0000.01710.02
4.3.00.0000.01310.02

preferences:
44.52 ms | 401 KiB | 5 Q