3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "helloworld"; echo preg_replace('~.\K.~', ' ', $str); echo "\n---\n"; echo array_reduce(str_split($str, 2), function($carry, $item) { return $carry . $item[0] . (isset($item[1]) ? ' ' : ''); }); echo "\n---\n"; for ($offset = 1, $length = strlen($str); $offset < $length; $offset += 2) { $str[$offset] = ' '; } 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)
8.5.10.0070.00419.71
8.5.00.0110.00920.29
8.4.160.0120.01123.20
8.4.150.0020.00014.05
8.4.140.0120.01317.79
8.4.130.0110.00717.64
8.4.120.0110.01017.86
8.4.110.0130.00820.74
8.4.100.0140.00318.14
8.4.90.0120.00820.55
8.4.80.0040.00518.83
8.4.70.0150.00518.86
8.4.60.0130.00718.82
8.4.50.0100.01017.74
8.4.40.0100.00019.73
8.4.30.0100.01020.61
8.4.20.0070.01419.90
8.4.10.0160.00019.79
8.3.290.0100.01120.80
8.3.280.0110.00818.41
8.3.270.0100.00916.61
8.3.260.0120.00716.84
8.3.250.0130.00719.19
8.3.240.0110.00816.59
8.3.230.0120.00716.71
8.3.220.0120.00719.02
8.3.210.0100.00918.44
8.3.200.0040.00416.71
8.3.190.0140.00517.32
8.3.180.0100.00816.71
8.3.170.0120.00616.73
8.3.160.0070.01018.93
8.3.150.0090.00917.13
8.3.140.0060.00316.52
8.3.130.0070.01118.74
8.3.120.0120.00619.05
8.3.110.0030.01116.96
8.3.100.0060.00316.59
8.3.90.0120.00318.44
8.3.80.0100.00019.36
8.3.70.0140.00416.88
8.3.60.0090.00618.55
8.3.50.0080.00524.64
8.3.40.0100.00618.96
8.3.30.0100.00718.98
8.3.20.0090.00020.63
8.3.10.0080.00020.15
8.3.00.0000.00820.77
8.2.300.0120.00920.41
8.2.290.0110.00617.04
8.2.280.0070.00220.59
8.2.270.0180.00016.82
8.2.260.0040.00419.24
8.2.250.0150.00019.11
8.2.240.0000.00818.98
8.2.230.0060.00320.94
8.2.220.0040.00424.06
8.2.210.0110.00426.77
8.2.200.0060.00318.88
8.2.190.0140.00718.43
8.2.180.0140.00718.66
8.2.170.0070.00722.96
8.2.160.0080.00622.29
8.2.150.0070.01124.18
8.2.140.0090.00024.66
8.2.130.0040.00426.16
8.2.120.0050.00221.23
8.2.110.0090.00022.28
8.2.100.0090.00317.91
8.2.90.0030.00619.88
8.2.80.0060.00317.97
8.2.70.0040.00417.93
8.2.60.0050.00318.16
8.2.50.0040.00418.10
8.2.40.0090.00021.20
8.2.30.0040.00419.35
8.2.20.0080.00018.05
8.2.10.0080.00019.05
8.2.00.0000.00819.33
8.1.340.0110.00817.70
8.1.330.0120.00716.41
8.1.320.0120.00718.30
8.1.310.0080.00017.03
8.1.300.0090.00619.57
8.1.290.0090.00330.84
8.1.280.0060.00925.92
8.1.270.0040.00422.43
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0110.00417.46
8.1.230.0070.00421.04
8.1.220.0040.00417.74
8.1.210.0080.00019.03
8.1.200.0040.00717.47
8.1.190.0040.00417.50
8.1.180.0040.00418.10
8.1.170.0040.00418.77
8.1.160.0050.00320.21
8.1.150.0000.00718.87
8.1.140.0040.00420.62
8.1.130.0000.00820.21
8.1.120.0000.00817.61
8.1.110.0040.00417.50
8.1.100.0000.00817.61
8.1.90.0040.00417.63
8.1.80.0000.00817.65
8.1.70.0030.00317.49
8.1.60.0050.00317.62
8.1.50.0030.00517.68
8.1.40.0030.00517.57
8.1.30.0050.00317.77
8.1.20.0070.00017.80
8.1.10.0040.00417.71
8.1.00.0000.00817.64
8.0.300.0070.00019.81
8.0.290.0040.00416.88
8.0.280.0000.00718.46
8.0.270.0080.00017.32
8.0.260.0050.00219.96
8.0.250.0000.00717.09
8.0.240.0070.00017.09
8.0.230.0070.00017.12
8.0.220.0030.00516.90
8.0.210.0070.00016.93
8.0.200.0030.00317.04
8.0.190.0000.00717.03
8.0.180.0030.00617.04
8.0.170.0040.00416.95
8.0.160.0030.00617.09
8.0.150.0070.00016.86
8.0.140.0000.00717.00
8.0.130.0030.00313.48
8.0.120.0000.00717.02
8.0.110.0000.00717.10
8.0.100.0000.00817.10
8.0.90.0000.00917.02
8.0.80.0100.01016.98
8.0.70.0050.00216.94
8.0.60.0040.00417.01
8.0.50.0000.00716.88
8.0.30.0080.00817.39
8.0.20.0120.00617.30
8.0.10.0040.00417.27
8.0.00.0150.00317.16
7.4.330.0050.00015.55
7.4.320.0000.00616.82
7.4.300.0000.00616.77
7.4.290.0040.00416.72
7.4.280.0050.00516.80
7.4.270.0030.00316.83
7.4.260.0000.00513.46
7.4.250.0040.00416.76
7.4.240.0020.00616.70
7.4.230.0040.00416.64
7.4.220.0050.00216.88
7.4.210.0100.00316.75
7.4.200.0030.00316.70
7.4.140.0130.00317.86
7.4.130.0080.01016.53
7.4.120.0100.01016.95
7.4.110.0120.00616.71
7.4.100.0120.01216.65
7.4.90.0140.00316.80
7.4.80.0100.00619.39
7.4.70.0070.01016.89
7.4.60.0090.00916.82
7.4.50.0050.00816.67
7.4.40.0080.00916.70
7.4.00.0110.00715.23
7.3.330.0050.00516.50
7.3.320.0030.00313.51
7.3.310.0000.00716.45
7.3.300.0000.00716.44
7.3.290.0070.00916.51
7.3.280.0080.01316.50
7.3.260.0100.00716.79
7.3.230.0170.00016.79
7.3.210.0140.00216.50
7.3.200.0030.01216.42
7.3.190.0110.01416.67
7.3.180.0130.00316.61
7.3.170.0060.00916.39
7.3.160.0060.00916.88
7.3.120.0030.01714.59
7.3.110.0090.01015.20
7.3.100.0160.00314.66
7.3.90.0120.00315.13
7.3.80.0030.01314.96
7.3.70.0110.00814.79
7.3.60.0170.00415.00
7.3.50.0090.01014.91
7.3.40.0110.00914.84
7.3.30.0060.00915.00
7.3.20.0100.00515.19
7.3.10.0080.01014.93
7.3.00.0070.01015.19
7.2.330.0150.00316.68
7.2.320.0100.00716.80
7.2.310.0130.00316.67
7.2.300.0030.01816.88
7.2.290.0130.00416.98
7.2.240.0060.01614.98
7.2.230.0120.00914.92
7.2.220.0120.00315.20
7.2.210.0110.01114.94
7.2.200.0030.01715.16
7.2.190.0070.01015.23
7.2.180.0140.00715.13
7.2.170.0070.01014.93
7.2.160.0060.01515.18
7.2.150.0110.00415.11
7.2.140.0040.01415.30
7.2.130.0100.00915.15
7.2.120.0100.01015.20
7.2.110.0070.01015.20
7.2.100.0120.00915.24
7.2.90.0030.01315.35
7.2.80.0100.00615.32
7.2.70.0110.00815.16
7.2.60.0070.01015.42
7.2.50.0150.00715.50
7.2.40.0080.01115.35
7.2.30.0130.00715.20
7.2.20.0100.01015.05
7.2.10.0030.01715.34
7.2.00.0060.01615.39
7.1.330.0130.00314.11
7.1.320.0210.00614.09
7.1.310.0120.00414.28
7.1.300.0160.00314.02
7.1.290.0070.01414.24
7.1.280.0090.00614.05
7.1.270.0140.00014.16
7.1.260.0090.00614.04
7.1.250.0210.00014.07

preferences:
29.85 ms | 403 KiB | 5 Q