3v4l.org

run code in 300+ PHP versions simultaneously
<?php $word = "Capuaalo"; $length = count($word); $count = 0; for($i = 0; $i < $length; $i++) { if($search = substr($word, $i, 1)=="a"){ $count = $count + 1; } } echo substr($word, 0, 1); echo $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)
8.3.60.0180.00316.75
8.3.50.0080.01217.36
8.3.40.0140.00018.71
8.3.30.0090.00618.88
8.3.20.0000.00818.69
8.3.10.0040.00420.53
8.3.00.0050.00319.25
8.2.180.0040.01116.88
8.2.170.0100.01022.96
8.2.160.0130.00321.02
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0030.00520.92
8.2.110.0040.00420.82
8.2.100.0040.00717.72
8.2.90.0000.01020.90
8.2.80.0060.00319.38
8.2.70.0090.00017.46
8.2.60.0000.00817.80
8.2.50.0030.00518.07
8.2.40.0040.00418.03
8.2.30.0000.00717.98
8.2.20.0030.00617.66
8.2.10.0040.00417.86
8.2.00.0040.00417.86
8.1.280.0110.00725.92
8.1.270.0040.00424.66
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00623.88
8.1.230.0090.00321.02
8.1.220.0000.00817.74
8.1.210.0050.00518.77
8.1.200.0000.00917.35
8.1.190.0000.00817.30
8.1.180.0040.00418.10
8.1.170.0050.00318.91
8.1.160.0040.00418.93
8.1.150.0040.00418.57
8.1.140.0040.00417.43
8.1.130.0000.00717.87
8.1.120.0030.00617.49
8.1.110.0050.00217.43
8.1.100.0040.00417.44
8.1.90.0040.00417.45
8.1.80.0030.00517.37
8.1.70.0090.00017.41
8.1.60.0040.00417.55
8.1.50.0040.00417.38
8.1.40.0040.00417.38
8.1.30.0000.00717.51
8.1.20.0040.00417.49
8.1.10.0000.00817.58
8.1.00.0040.00417.54
8.0.300.0040.00419.66
8.0.290.0030.00516.75
8.0.280.0030.00318.30
8.0.270.0000.00717.13
8.0.260.0070.00016.81
8.0.250.0030.00516.88
8.0.240.0000.00816.84
8.0.230.0040.00416.92
8.0.220.0000.00716.94
8.0.210.0030.00316.85
8.0.200.0030.00316.91
8.0.190.0080.00016.89
8.0.180.0040.00416.93
8.0.170.0080.00017.02
8.0.160.0000.00717.01
8.0.150.0000.00816.87
8.0.140.0080.00016.92
8.0.130.0030.00313.39
8.0.120.0000.00816.91
8.0.110.0000.00716.76
8.0.100.0030.00317.00
8.0.90.0000.00716.95
8.0.80.0060.00916.94
8.0.70.0040.00416.83
8.0.60.0000.00716.91
8.0.50.0000.00716.93
8.0.30.0050.01317.10
8.0.20.0060.01316.98
8.0.10.0070.00016.92
8.0.00.0070.01416.73
7.4.330.0030.00312.96
7.4.320.0000.00616.48
7.4.300.0030.00316.44
7.4.290.0000.00716.43
7.4.280.0100.00316.42
7.4.270.0030.00316.44
7.4.260.0000.00513.14
7.4.250.0040.00416.55
7.4.240.0000.00716.35
7.4.230.0030.00316.33
7.4.220.0090.00916.60
7.4.210.0110.00716.56
7.4.200.0030.00316.49
7.4.190.0040.00416.47
7.4.160.0120.00316.46
7.4.150.0130.00316.66
7.4.140.0080.01216.50
7.4.130.0080.01416.57
7.4.120.0080.00816.57
7.4.110.0100.01316.48
7.4.100.0100.00716.59
7.4.90.0110.00616.55
7.4.80.0110.00516.66
7.4.70.0130.00316.50
7.4.60.0060.01016.54
7.4.50.0040.00816.47
7.4.40.0070.00716.34
7.4.30.0110.00516.62
7.4.00.0090.00614.87
7.3.330.0000.00613.05
7.3.320.0030.00313.28
7.3.310.0040.00416.38
7.3.300.0030.00316.35
7.3.290.0070.01416.37
7.3.280.0080.01116.26
7.3.270.0140.01016.52
7.3.260.0080.00816.48
7.3.250.0090.00816.46
7.3.240.0080.00916.33
7.3.230.0140.00316.37
7.3.210.0100.00616.38
7.3.200.0160.00019.39
7.3.190.0050.01216.67
7.3.180.0060.00916.50
7.3.170.0070.01416.50
7.3.160.0060.01216.55
7.3.120.0040.01114.90
7.3.10.0100.00716.66
7.3.00.0030.01216.38
7.2.330.0130.01016.55
7.2.320.0160.00616.77
7.2.310.0120.01316.41
7.2.300.0130.01016.66
7.2.290.0100.00616.63
7.2.130.0000.01017.01
7.2.120.0040.01116.94
7.2.110.0090.00316.85
7.2.100.0040.00716.84
7.2.90.0080.00017.07
7.2.80.0100.00317.03
7.2.70.0030.00817.04
7.2.60.0120.00616.73
7.2.50.0060.00716.93
7.2.40.0030.01016.70
7.2.30.0030.01017.00
7.2.20.0080.00316.95
7.2.10.0080.00416.95
7.2.00.0100.00517.57
7.1.250.0060.00615.71
7.1.240.0040.00815.78
7.1.230.0040.00715.75
7.1.220.0070.00715.93
7.1.210.0090.00315.84
7.1.200.0010.01015.85
7.1.190.0060.00315.80
7.1.180.0000.00916.02
7.1.170.0030.00915.79
7.1.160.0030.01015.78
7.1.150.0000.01315.57
7.1.140.0070.00715.60
7.1.130.0000.00915.80
7.1.120.0000.01115.87
7.1.110.0070.00415.83
7.1.100.0060.00615.91
7.1.90.0030.01016.00
7.1.80.0090.00315.89
7.1.70.0100.00216.41
7.1.60.0070.00316.38
7.1.50.0100.01316.07
7.1.40.0030.01015.63
7.1.30.0140.00015.82
7.1.20.0000.01615.82
7.1.10.0000.01415.60
7.1.00.0000.02319.10
7.0.330.0000.01215.48
7.0.320.0030.00715.54
7.0.310.0040.00415.57
7.0.300.0050.00215.34
7.0.290.0000.00815.45
7.0.280.0040.00815.51
7.0.270.0030.01015.41
7.0.260.0090.00315.07
7.0.250.0080.00415.44
7.0.240.0000.01415.37
7.0.230.0000.00715.60
7.0.220.0040.00815.21
7.0.210.0100.00315.52
7.0.200.0050.00916.06
7.0.190.0040.01115.53
7.0.180.0130.00615.40
7.0.170.0130.00315.32
7.0.160.0100.00315.58
7.0.150.0070.00715.52
7.0.140.0030.04218.72
7.0.130.0060.00615.27
7.0.120.0020.04218.76
7.0.110.0000.01515.50
7.0.100.0080.00415.27
7.0.90.0030.01315.38
7.0.80.0040.01115.54
7.0.70.0040.00815.34
7.0.60.0170.03917.67
7.0.50.0060.03616.80
7.0.40.0090.03116.61
7.0.30.0050.04016.90
7.0.20.0050.03016.73
7.0.10.0060.05016.77
7.0.00.0050.04816.79
5.6.380.0040.00414.54
5.6.370.0040.01214.29
5.6.360.0110.00314.27
5.6.350.0030.01314.61
5.6.340.0030.00513.95
5.6.330.0000.01314.64
5.6.320.0060.00314.61
5.6.310.0000.00914.55
5.6.300.0080.00413.84
5.6.290.0040.00714.06
5.6.280.0110.03517.61
5.6.270.0040.00414.36
5.6.260.0030.01314.40
5.6.250.0080.00014.22
5.6.240.0030.01014.29
5.6.230.0040.00914.25
5.6.220.0060.01214.28
5.6.210.0120.04017.48
5.6.200.0050.04716.12
5.6.190.0160.03517.33
5.6.180.0120.04317.39
5.6.170.0010.05117.32
5.6.160.0020.04517.38
5.6.150.0100.03817.46
5.6.140.0100.03217.17
5.6.130.0140.04017.30
5.6.120.0110.04017.37
5.6.110.0000.03417.33
5.6.100.0020.03517.27
5.6.90.0020.02917.21
5.6.80.0060.02216.91
5.6.70.0040.02216.77
5.6.60.0000.02516.99
5.6.50.0050.02416.72
5.6.40.0040.02417.08
5.6.30.0070.02016.88
5.6.20.0030.02517.06
5.6.10.0040.02216.93
5.6.00.0050.02316.68
5.5.380.0100.00011.18
5.5.370.0060.00811.27
5.5.360.0000.01210.91
5.5.350.0070.04015.83
5.5.340.0050.02314.58
5.5.330.0060.04015.68
5.5.320.0030.03915.75
5.5.310.0050.04315.87
5.5.300.0050.03815.52
5.5.290.0050.04515.79
5.5.280.0060.03315.71
5.5.270.0030.02315.60
5.5.260.0040.02415.67
5.5.250.0020.02315.30
5.5.240.0020.04215.12
5.5.230.0050.02115.05
5.5.220.0030.02215.24
5.5.210.0030.04515.37
5.5.200.0040.02115.32
5.5.190.0040.02115.22
5.5.180.0000.02214.97
5.5.170.0070.00710.90
5.5.160.0030.02015.25
5.5.150.0040.02115.33
5.5.140.0020.02515.12
5.5.130.0020.02315.18
5.5.120.0030.02015.21
5.5.110.0030.02215.27
5.5.100.0070.02015.20
5.5.90.0020.02514.98
5.5.80.0000.02315.07
5.5.70.0020.02515.15
5.5.60.0050.02015.12
5.5.50.0060.02215.21
5.5.40.0030.02315.19
5.5.30.0000.02215.29
5.5.20.0040.02115.05
5.5.10.0030.02715.16
5.5.00.0030.04515.14
5.4.450.0070.04515.21
5.4.440.0010.04815.25
5.4.430.0050.02114.91
5.4.420.0000.02315.01
5.4.410.0030.02314.94
5.4.400.0030.02115.00
5.4.390.0020.02315.06
5.4.380.0050.02015.00
5.4.370.0020.02414.94
5.4.360.0020.02315.03
5.4.350.0040.02014.88
5.4.340.0010.02315.08
5.4.330.0070.00710.84
5.4.320.0020.02314.76
5.4.310.0020.02614.92
5.4.300.0030.02015.05
5.4.290.0060.01815.03
5.4.280.0030.02015.10
5.4.270.0020.02814.82
5.4.260.0020.02414.94
5.4.250.0060.01715.17
5.4.240.0030.02215.05
5.4.230.0020.02414.80
5.4.220.0050.02014.95
5.4.210.0070.01514.89
5.4.200.0040.02015.08
5.4.190.0040.02214.91
5.4.180.0060.02015.03
5.4.170.0060.03815.03
5.4.160.0060.03114.97
5.4.150.0080.04314.88
5.4.140.0100.02713.55
5.4.130.0070.03813.63
5.4.120.0000.02713.51
5.4.110.0040.03513.53
5.4.100.0070.02813.62
5.4.90.0030.03013.46
5.4.80.0010.04313.68
5.4.70.0030.03813.62
5.4.60.0030.03713.52
5.4.50.0030.04213.67
5.4.40.0060.03513.66
5.4.30.0050.02513.68
5.4.20.0050.02013.59
5.4.10.0080.03613.61
5.4.00.0020.02513.40
5.3.290.0050.02012.56
5.3.280.0000.02312.39
5.3.270.0020.03512.41
5.3.260.0040.03912.52
5.3.250.0050.02712.61
5.3.240.0030.04012.45
5.3.230.0060.03312.50
5.3.220.0020.03512.40
5.3.210.0040.04412.45
5.3.200.0030.03912.34
5.3.190.0070.03912.32
5.3.180.0030.04212.45
5.3.170.0050.03112.51
5.3.160.0040.02912.49
5.3.150.0050.04112.53
5.3.140.0030.04312.42
5.3.130.0080.03812.53
5.3.120.0120.01512.35
5.3.110.0020.02712.43
5.3.100.0000.04512.14
5.3.90.0060.03812.27
5.3.80.0120.02812.08
5.3.70.0020.04212.06
5.3.60.0030.03312.20
5.3.50.0050.01812.08
5.3.40.0050.02712.10
5.3.30.0050.02212.13
5.3.20.0040.03711.94
5.3.10.0040.03911.76
5.3.00.0010.02811.79
5.2.170.0050.03211.11
5.2.160.0080.02711.12
5.2.150.0070.02211.00
5.2.140.0010.01810.98
5.2.130.0060.02811.02
5.2.120.0070.02511.08
5.2.110.0030.03311.11
5.2.100.0050.03511.08
5.2.90.0030.02710.98
5.2.80.0040.02511.01
5.2.70.0030.03511.03
5.2.60.0060.03211.05
5.2.50.0060.02510.99
5.2.40.0080.03010.98
5.2.30.0040.02410.98
5.2.20.0030.03210.98
5.2.10.0030.03410.98
5.2.00.0050.02810.98
5.1.60.0020.02910.98
5.1.50.0070.02410.98
5.1.40.0120.01610.98
5.1.30.0030.03210.98
5.1.20.0070.01910.98
5.1.10.0060.03010.98
5.1.00.0030.03310.98
5.0.50.0030.02010.98
5.0.40.0010.02110.98
5.0.30.0040.02710.98
5.0.20.0020.01710.98
5.0.10.0020.02510.98
5.0.00.0020.03010.98
4.4.90.0020.01510.98
4.4.80.0050.01810.98
4.4.70.0020.01810.98
4.4.60.0020.01210.98
4.4.50.0050.01510.98
4.4.40.0030.01910.98
4.4.30.0000.02210.98
4.4.20.0020.02210.98
4.4.10.0030.02010.98
4.4.00.0020.03210.98
4.3.110.0000.01510.98
4.3.100.0070.01310.98
4.3.90.0000.01510.98
4.3.80.0030.02810.98
4.3.70.0030.01710.98
4.3.60.0000.02210.98
4.3.50.0010.01510.98
4.3.40.0030.01910.98
4.3.30.0020.01610.98
4.3.20.0000.02010.98
4.3.10.0030.02010.98
4.3.00.0020.01810.98

preferences:
50.72 ms | 401 KiB | 5 Q