3v4l.org

run code in 300+ PHP versions simultaneously
<?php $expression = "5+4^3^2^1"; if (!preg_match('~^-?\d*\.?\d+([*/+-^]-?\d*\.?\d+)*$~', $expression)) { echo "invalid expression"; } else { $components = preg_split('~(?<=\d)([*/+-^])~', $expression, 0, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE); var_export($components); // ['5','+','4','^','3','^','2','^','1'] while (($index = array_search('^', $components)) !== false) { array_splice($components, $index - 1, 3, pow($components[$index - 1], $components[$index + 1])); var_export($components); // ['5', '+', 64, '^', '2', '^', '1'] // ['5', '+' ,4096, '^', '1'] // ['5', '+', 4096] } while (($index = array_search('*', $components)) !== false) { array_splice($components, $index - 1, 3, $components[$index - 1] * $components[$index + 1]); var_export($components); } while (($index = array_search('/', $components)) !== false) { array_splice($components, $index - 1, 3, $components[$index - 1] / $components[$index + 1]); } while (($index = array_search('+', $components)) !== false) { array_splice($components, $index - 1, 3, $components[$index - 1] + $components[$index + 1]); // [4101] } while (($index = array_search('-', $components)) !== false) { array_splice($components, $index - 1, 3, $components[$index - 1] - $components[$index + 1]); } echo $components[0]; // 4101 }

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)
8.3.70.0040.01116.88
8.3.60.0110.00718.52
8.3.50.0140.00016.83
8.3.40.0140.00718.95
8.3.30.0110.00419.04
8.3.20.0050.00324.18
8.3.10.0080.00024.66
8.3.00.0040.00426.16
8.2.190.0120.00316.88
8.2.180.0060.00925.92
8.2.170.0110.00419.07
8.2.160.0040.01122.96
8.2.150.0040.00425.66
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0030.00519.10
8.2.110.0090.00020.47
8.2.100.0060.00617.97
8.2.90.0030.00517.88
8.2.80.0000.00919.02
8.2.70.0080.00018.00
8.2.60.0030.00817.93
8.2.50.0040.00418.07
8.2.40.0040.00420.20
8.2.30.0040.00418.21
8.2.20.0000.00718.34
8.2.10.0030.00519.36
8.2.00.0040.00419.38
8.1.280.0060.00925.92
8.1.270.0070.01423.90
8.1.260.0030.00626.35
8.1.250.0040.00428.09
8.1.240.0040.00422.02
8.1.230.0090.00318.08
8.1.220.0040.00417.77
8.1.210.0050.00318.77
8.1.200.0090.00017.38
8.1.190.0050.00317.48
8.1.180.0060.00318.10
8.1.170.0030.00518.90
8.1.160.0030.00519.01
8.1.150.0000.00818.89
8.1.140.0000.00718.99
8.1.130.0000.00820.35
8.1.120.0000.00817.70
8.1.110.0080.00017.55
8.1.100.0000.00817.54
8.1.90.0000.00717.66
8.1.80.0050.00517.50
8.1.70.0000.00817.70
8.1.60.0030.00517.81
8.1.50.0000.00817.64
8.1.40.0000.00817.77
8.1.30.0040.00417.74
8.1.20.0090.00017.79
8.1.10.0050.00317.80
8.1.00.0040.00417.55
8.0.300.0030.00518.89
8.0.290.0040.00417.00
8.0.280.0000.00718.43
8.0.270.0030.00318.18
8.0.260.0060.00318.69
8.0.250.0000.00717.23
8.0.240.0040.00417.11
8.0.230.0000.00717.18
8.0.220.0030.00517.16
8.0.210.0000.00717.08
8.0.200.0000.00717.04
8.0.190.0050.00317.20
8.0.180.0050.00317.17
8.0.170.0040.00417.19
8.0.160.0070.00317.17
8.0.150.0000.00817.14
8.0.140.0040.00417.19
8.0.130.0060.00013.66
8.0.120.0060.00317.13
8.0.110.0030.00617.15
8.0.100.0080.00017.07
8.0.90.0000.00817.03
8.0.80.0070.00717.18
8.0.70.0060.00917.00
8.0.60.0180.00417.10
8.0.50.0060.01117.11
8.0.30.0040.01217.18
8.0.20.0130.00317.17
8.0.10.0060.01017.25
8.0.00.0120.00317.27
7.4.330.0020.00215.55
7.4.320.0000.00716.87
7.4.300.0030.00316.75
7.4.290.0000.00816.75
7.4.280.0050.00316.64
7.4.270.0000.00716.84
7.4.260.0050.00013.63
7.4.250.0000.00716.81
7.4.240.0000.00716.70
7.4.230.0040.00416.96
7.4.220.0000.00716.74
7.4.210.0060.00916.79
7.4.200.0070.01116.88
7.4.190.0090.00616.90
7.4.180.0030.01317.02
7.4.160.0120.00316.87
7.4.150.0070.00716.95
7.4.140.0040.01116.65
7.4.130.0070.00716.81
7.4.120.0100.00616.86
7.4.110.0030.01216.82
7.4.100.0030.01316.75
7.4.90.0080.00916.74
7.4.80.0110.00416.92
7.4.70.0080.00816.88
7.4.60.0110.00816.70
7.4.50.0150.00616.78
7.4.40.0070.01016.62
7.4.30.0090.00616.86
7.4.20.0090.00616.89
7.4.10.0030.01016.57
7.4.00.0040.01016.66
7.3.330.0040.00416.52
7.3.320.0030.00313.41
7.3.310.0000.00716.48
7.3.300.0030.00316.36
7.3.290.0090.00616.48
7.3.280.0030.01016.50
7.3.270.0120.00316.40
7.3.260.0110.00716.54
7.3.250.0100.00716.47
7.3.240.0030.01016.44
7.3.230.0040.01016.44
7.3.220.0130.00616.45
7.3.210.0080.00616.50
7.3.200.0070.01316.49
7.3.190.0080.01216.46
7.3.180.0180.00016.43
7.3.170.0090.00616.47
7.3.160.0040.01116.46
7.3.150.0060.01316.41
7.3.140.0050.00916.45
7.3.130.0100.00616.54
7.3.120.0130.00716.43
7.3.110.0040.01116.43
7.3.100.0000.01416.32
7.3.90.0100.00416.73
7.3.80.0090.00616.41
7.3.70.0080.00516.52
7.3.60.0060.00916.57
7.3.50.0110.00416.66
7.3.40.0040.01116.65
7.3.30.0040.01116.57
7.3.20.0070.00716.63
7.3.10.0030.01116.58
7.3.00.0130.00316.65

preferences:
65.12 ms | 401 KiB | 5 Q