3v4l.org

run code in 300+ PHP versions simultaneously
<?php function count_char($str) { $chars = str_split($str); $char_counter = array(); foreach($chars as $char) { if (ctype_alpha($char)) { if (!isset($char_counter[$char])) { $char_counter[$char] = 1; } else { ++$char_counter[$char]; } } } ksort($char_counter); return $char_counter; } var_dump(count_char("Hello World"));

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)
8.3.60.0190.00318.55
8.3.50.0070.00718.39
8.3.40.0070.01118.98
8.3.30.0040.01118.84
8.3.20.0040.00421.85
8.3.10.0050.00223.65
8.3.00.0070.00023.52
8.2.180.0070.00716.38
8.2.170.0040.01122.96
8.2.160.0100.00322.96
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0000.01017.38
8.2.110.0060.00320.53
8.2.100.0000.01117.58
8.2.90.0080.00018.03
8.2.80.0080.00017.97
8.2.70.0040.00417.63
8.2.60.0040.00417.63
8.2.50.0040.00417.75
8.2.40.0030.00617.75
8.2.30.0000.00819.27
8.2.20.0050.00518.12
8.2.10.0040.00418.16
8.2.00.0030.00618.17
8.1.280.0190.01325.92
8.1.270.0000.00920.78
8.1.260.0000.00826.35
8.1.250.0050.00328.09
8.1.240.0040.00819.01
8.1.230.0070.00417.42
8.1.220.0040.00417.76
8.1.210.0030.00618.77
8.1.200.0000.00817.66
8.1.190.0030.00517.35
8.1.180.0000.00918.10
8.1.170.0040.00417.62
8.1.160.0000.00718.93
8.1.150.0050.00219.02
8.1.140.0030.00317.69
8.1.130.0040.00419.06
8.1.120.0000.00917.42
8.1.110.0000.00817.47
8.1.100.0040.00317.47
8.1.90.0040.00417.31
8.1.80.0000.00717.48
8.1.70.0000.00717.51
8.1.60.0060.00317.46
8.1.50.0040.00417.56
8.1.40.0040.00417.48
8.1.30.0040.00417.59
8.1.20.0040.00417.48
8.1.10.0000.00817.46
8.1.00.0030.00517.46
8.0.300.0040.00420.06
8.0.290.0060.00316.63
8.0.280.0050.00318.46
8.0.270.0070.00016.94
8.0.260.0070.00217.27
8.0.250.0030.00716.84
8.0.240.0040.00416.89
8.0.230.0030.00316.93
8.0.220.0040.00416.79
8.0.210.0070.00316.96
8.0.200.0030.00316.92
8.0.190.0000.00716.82
8.0.180.0000.00816.83
8.0.170.0090.00016.88
8.0.160.0040.00416.84
8.0.150.0000.00716.85
8.0.140.0040.00716.84
8.0.130.0070.00013.27
8.0.120.0040.00416.76
8.0.110.0040.00316.79
8.0.100.0020.00516.88
8.0.90.0000.00716.74
8.0.80.0180.00416.89
8.0.70.0000.00816.75
8.0.60.0000.00716.85
8.0.50.0030.00616.74
8.0.30.0100.01117.11
8.0.20.0150.00717.41
8.0.10.0000.00816.90
8.0.00.0060.01116.72
7.4.330.0020.00215.55
7.4.320.0030.00316.61
7.4.300.0030.00316.50
7.4.290.0030.00316.42
7.4.280.0050.00216.60
7.4.270.0000.01016.60
7.4.260.0070.00016.48
7.4.250.0030.00316.41
7.4.240.0000.00716.61
7.4.230.0040.00416.70
7.4.220.0000.00816.60
7.4.210.0090.00816.62
7.4.200.0030.00316.40
7.4.160.0060.01016.59
7.4.140.0170.01117.86
7.4.130.0110.00716.49
7.4.120.0090.00916.54
7.4.110.0140.00316.37
7.4.100.0100.00716.53
7.4.90.0180.00616.30
7.4.80.0120.01219.39
7.4.70.0100.00716.58
7.4.60.0100.01016.61
7.4.50.0060.01016.39
7.4.40.0090.00616.42
7.4.10.0100.01014.64
7.4.00.0050.01014.97
7.3.330.0000.00513.36
7.3.320.0000.00613.34
7.3.310.0000.00716.47
7.3.300.0000.00716.37
7.3.290.0000.00716.37
7.3.280.0090.00716.37
7.3.260.0090.01016.38
7.3.240.0130.00816.30
7.3.230.0140.00316.59
7.3.210.0140.00416.41
7.3.200.0030.01416.30
7.3.190.0060.01216.45
7.3.180.0120.00416.31
7.3.170.0160.00016.54
7.3.160.0070.01016.50
7.3.130.0120.00614.84
7.3.120.0080.00814.96
7.3.110.0080.01014.70
7.3.100.0050.01214.63
7.3.90.0110.00414.79
7.3.80.0030.00914.84
7.3.70.0040.00914.78
7.3.60.0060.00814.92
7.3.50.0060.00814.73
7.3.40.0040.01014.74
7.3.30.0080.00514.63
7.3.20.0050.00716.66
7.3.10.0040.00816.69
7.3.00.0060.00916.63
7.2.330.0070.01116.79
7.2.320.0110.00916.87
7.2.310.0100.00716.69
7.2.300.0110.00616.81
7.2.290.0060.01416.64
7.2.260.0030.01415.21
7.2.250.0090.00715.21
7.2.240.0070.00715.00
7.2.230.0130.00215.21
7.2.220.0040.01015.07
7.2.210.0070.00914.97
7.2.200.0050.00814.86
7.2.190.0050.01015.08
7.2.180.0090.00714.98
7.2.170.0080.00615.13
7.2.160.0050.01014.89
7.2.150.0030.01216.97
7.2.140.0060.00717.04
7.2.130.0060.00616.80
7.2.120.0070.00517.08
7.2.110.0050.00516.91
7.2.100.0050.00916.97
7.2.90.0070.00817.00
7.2.80.0050.01216.91
7.2.70.0040.01116.89
7.2.60.0050.00816.90
7.2.50.0050.00817.04
7.2.40.0210.01017.30
7.2.30.0190.00917.30
7.2.20.0210.01117.13
7.2.10.0250.00917.14
7.2.00.0290.01017.24
7.1.330.0080.00715.81
7.1.320.0080.00515.74
7.1.310.0070.00415.73
7.1.300.0000.01415.71
7.1.290.0030.01015.77
7.1.280.0030.00715.81
7.1.270.0050.00915.79
7.1.260.0060.00915.79
7.1.250.0080.00715.76
7.1.240.0120.00415.91
7.1.230.0060.01316.05
7.1.220.0040.01215.82
7.1.210.0090.00015.96
7.1.200.0090.00415.92
7.1.190.0030.00915.63
7.1.180.0030.01015.66
7.1.170.0050.00515.98
7.1.160.0290.00816.49
7.1.150.0300.00716.24
7.1.140.0290.00816.30
7.1.130.0300.01216.40
7.1.120.0320.00916.31
7.1.110.0380.01315.96
7.1.100.0310.00916.12
7.1.90.0370.00616.00
7.1.80.0280.00916.06
7.1.70.0250.00915.65
7.1.60.0360.00824.56
7.1.50.0390.00924.49
7.1.40.0380.01124.18
7.1.30.0480.01024.36
7.1.20.0380.01324.26
7.1.10.0260.01115.31
7.1.00.0350.01015.21
7.0.330.0030.01315.32
7.0.320.0000.01515.48
7.0.310.0090.00615.16
7.0.300.0090.00015.44
7.0.290.0030.00615.14
7.0.280.0040.01115.54
7.0.270.0060.00615.27
7.0.260.0070.00715.34
7.0.250.0080.00615.33
7.0.240.0110.00315.31
7.0.230.0080.00415.50
7.0.220.0030.01315.36
7.0.210.0040.01115.27
7.0.200.0110.00015.59
7.0.190.0110.00315.36
7.0.180.0030.00615.48
7.0.170.0040.00815.46
7.0.160.0070.00715.31
7.0.150.0080.00615.28
7.0.140.0040.00815.33
7.0.130.0060.00615.38
7.0.120.0000.00915.50
7.0.110.0030.01315.52
7.0.100.0060.00615.55
7.0.90.0100.00015.45
7.0.80.0030.01015.44
7.0.70.0080.00415.41
7.0.60.0000.01115.36
7.0.50.0090.00015.60
7.0.40.0030.00913.31
7.0.30.0040.00813.64
7.0.20.0060.00913.54
7.0.10.0080.00613.51
7.0.00.0030.01013.32
5.6.400.0070.00714.63
5.6.390.0030.01014.29
5.6.380.0090.00914.32
5.6.370.0000.01614.30
5.6.360.0070.00714.66
5.6.350.0060.00914.72
5.6.340.0040.00714.28
5.6.330.0030.01014.19
5.6.320.0000.00814.24
5.6.310.0060.00714.38
5.6.300.0090.00614.18
5.6.290.0050.00514.53
5.6.280.0090.00614.29
5.6.270.0090.00614.52
5.6.260.0060.00914.20
5.6.250.0100.00314.71
5.6.240.0050.00514.40
5.6.230.0030.00714.48
5.6.220.0070.00714.52
5.6.210.0090.00314.45
5.6.200.0070.00714.53
5.6.190.0130.00014.28
5.6.180.0000.01414.38
5.6.170.0080.00814.29
5.6.160.0030.01414.49
5.6.150.0090.00614.48
5.6.140.0090.00614.61
5.6.130.0050.00914.42
5.6.120.0000.01714.46
5.6.110.0090.00514.53
5.6.100.0030.01314.40
5.6.90.0030.01314.50
5.6.80.0100.00514.31
5.6.70.0100.00314.32
5.6.60.0060.00914.29
5.6.50.0100.00314.41
5.6.40.0080.00814.59
5.6.30.0090.00614.55
5.6.20.0000.01314.13
5.6.10.0000.00914.67
5.6.00.0030.01014.27

preferences:
31.37 ms | 400 KiB | 5 Q