3v4l.org

run code in 300+ PHP versions simultaneously
<?php function buildNvpair($name, $value) { $nlen = strlen($name); $vlen = strlen($value); if ($nlen < 128) { /* nameLengthB0 */ $nvpair = chr($nlen); } else { /* nameLengthB3 & nameLengthB2 & nameLengthB1 & nameLengthB0 */ $nvpair = chr(($nlen >> 24) | 0x80) . chr(($nlen >> 16) & 0xFF) . chr(($nlen >> 8) & 0xFF) . chr($nlen & 0xFF); } if ($vlen < 128) { /* valueLengthB0 */ $nvpair .= chr($vlen); } else { /* valueLengthB3 & valueLengthB2 & valueLengthB1 & valueLengthB0 */ $nvpair .= chr(($vlen >> 24) | 0x80) . chr(($vlen >> 16) & 0xFF) . chr(($vlen >> 8) & 0xFF) . chr($vlen & 0xFF); } /* nameData & valueData */ return $nvpair . $name . $value; } $a = buildNvpair("keyword", "48260,49404,49412,49452,49454,49504,49539,49559,49609,49615,49616,49617,49618,49639,49688,49689,49691,49692,49696,49704,49724,49766,49767,49768,49769,49771,49772,49814,49857,49858,49861,49862,49863,49864,50544,50588,50617,50653,50665,50666,50667,50668,50669,50670,50671,50672,50673,50674,50675,50730,50731,50732,50733,50735,50736,50737,50750,50753,50754,50786,50788,50790,50800,50900,50901,50902,50903,50904,50905,50906,50907,50908,50909,50920,50921,50922,50923,50924,50925,50944,50979,50985,50987,50990,51101,51102,51103,51104,51105,51106,51107,51108,51109,51110,51111,51112,51113,51114,51115,51121"); var_dump($a);

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)
8.3.60.0120.00618.55
8.3.50.0110.00921.34
8.3.40.0100.00718.84
8.3.30.0100.00319.07
8.3.20.0050.00320.33
8.3.10.0000.00823.69
8.3.00.0060.00319.25
8.2.180.0090.00616.63
8.2.170.0070.00722.96
8.2.160.0110.00720.49
8.2.150.0050.00224.18
8.2.140.0000.00924.66
8.2.130.0000.00726.16
8.2.120.0000.00822.18
8.2.110.0070.00222.25
8.2.100.0080.00417.61
8.2.90.0030.00619.20
8.2.80.0000.00817.97
8.2.70.0080.00017.50
8.2.60.0000.00818.04
8.2.50.0060.00318.07
8.2.40.0090.00020.07
8.2.30.0000.00818.03
8.2.20.0040.00417.68
8.2.10.0070.00018.22
8.2.00.0000.00817.70
8.1.280.0110.00425.92
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0030.00623.97
8.1.230.0040.00819.04
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0080.00317.35
8.1.190.0080.00017.23
8.1.180.0040.00418.10
8.1.170.0030.00618.49
8.1.160.0000.00722.04
8.1.150.0040.00418.91
8.1.140.0000.00717.48
8.1.130.0000.00717.85
8.1.120.0030.00417.39
8.1.110.0080.00017.50
8.1.100.0030.00317.53
8.1.90.0030.00517.48
8.1.80.0050.00317.48
8.1.70.0000.00817.43
8.1.60.0040.00417.60
8.1.50.0040.00417.61
8.1.40.0040.00417.56
8.1.30.0040.00417.60
8.1.20.0000.00817.61
8.1.10.0000.00717.48
8.1.00.0030.00617.37
8.0.300.0000.00718.77
8.0.290.0080.00016.75
8.0.280.0070.00018.38
8.0.270.0000.00717.20
8.0.260.0000.00717.16
8.0.250.0060.00017.01
8.0.240.0030.00316.97
8.0.230.0070.00016.96
8.0.220.0030.00316.90
8.0.210.0030.00316.96
8.0.200.0030.00316.90
8.0.190.0030.00517.05
8.0.180.0000.00716.91
8.0.170.0040.00416.91
8.0.160.0040.00416.77
8.0.150.0050.00216.76
8.0.140.0000.00716.87
8.0.130.0030.00313.35
8.0.120.0040.00416.93
8.0.110.0000.00816.95
8.0.100.0050.00216.76
8.0.90.0000.00716.73
8.0.80.0070.01016.88
8.0.70.0000.00716.83
8.0.60.0040.00416.84
8.0.50.0080.00016.71
8.0.30.0150.00717.34
8.0.20.0110.00817.40
8.0.10.0070.00016.88
8.0.00.0130.00716.86
7.4.330.0000.00515.07
7.4.320.0030.00316.54
7.4.300.0060.00016.62
7.4.290.0030.00316.46
7.4.280.0000.00816.38
7.4.270.0070.00016.64
7.4.260.0030.00316.59
7.4.250.0000.00816.60
7.4.240.0020.00516.63
7.4.230.0000.00716.43
7.4.220.0130.01316.43
7.4.210.0070.01016.66
7.4.200.0070.00016.39
7.4.160.0000.01516.71
7.4.150.0100.01017.40
7.4.140.0080.01017.86
7.4.130.0120.00416.45
7.4.120.0130.00816.63
7.4.110.0110.01116.68
7.4.100.0140.00316.56
7.4.90.0090.00916.54
7.4.80.0030.01319.39
7.4.70.0130.00816.57
7.4.60.0070.01016.60
7.4.50.0040.00416.38
7.4.40.0150.00316.30
7.4.30.0120.00916.39
7.4.00.0040.01114.77
7.3.330.0030.00313.33
7.3.320.0000.00513.26
7.3.310.0000.00616.18
7.3.300.0000.00716.40
7.3.290.0050.00916.39
7.3.280.0100.00716.36
7.3.270.0130.00617.40
7.3.260.0070.01016.77
7.3.250.0120.00516.58
7.3.240.0100.00716.37
7.3.230.0120.00616.49
7.3.210.0150.00016.42
7.3.200.0110.00619.39
7.3.190.0090.00816.34
7.3.180.0120.00416.50
7.3.170.0090.00616.68
7.3.160.0120.00616.57
7.2.330.0090.00916.66
7.2.320.0060.01216.71
7.2.310.0100.00716.46
7.2.300.0120.00616.76
7.2.290.0070.01016.66
7.2.00.0000.01219.32
7.1.100.0100.00318.03
7.1.70.0000.00717.20
7.1.60.0100.00719.11
7.1.50.0110.01416.98
7.1.00.0000.07722.33
7.0.200.0030.00616.89
7.0.140.0030.07022.21
7.0.100.0270.08320.07
7.0.90.0230.06319.90
7.0.80.0030.08319.88
7.0.70.0070.07019.90
7.0.60.0100.05319.93
7.0.50.0000.07020.36
7.0.40.0070.06720.04
7.0.30.0130.07720.10
7.0.20.0030.05720.05
7.0.10.0130.04320.10
7.0.00.0130.06020.04
5.6.280.0100.06721.03
5.6.250.0100.05720.57
5.6.240.0030.08720.61
5.6.230.0100.07720.63
5.6.220.0000.05020.49
5.6.210.0100.08020.47
5.6.200.0070.07321.11
5.6.190.0130.06321.08
5.6.180.0070.08321.08
5.6.170.0100.08021.10
5.6.160.0130.08321.05
5.6.150.0070.08021.08
5.6.140.0170.06720.95
5.6.130.0100.08321.08
5.6.120.0070.05321.08
5.6.110.0000.04721.08
5.6.100.0000.08021.04
5.6.90.0070.08321.02
5.6.80.0130.06720.49
5.6.70.0130.07020.42
5.6.60.0100.03720.43
5.6.50.0170.06320.43
5.6.40.0070.04020.38
5.6.30.0100.03720.54
5.6.20.0070.03720.43
5.6.10.0070.03720.31
5.6.00.0000.04320.38
5.5.380.0100.03720.38
5.5.370.0070.08020.53
5.5.360.0130.07320.41
5.5.350.0100.07320.35
5.5.340.0070.04720.80
5.5.330.0100.04320.80
5.5.320.0230.07020.92
5.5.310.0000.06020.93
5.5.300.0100.07720.91
5.5.290.0030.05720.91
5.5.280.0070.05720.93
5.5.270.0130.04720.81
5.5.260.0070.07320.80
5.5.250.0100.06320.65
5.5.240.0030.07320.18
5.5.230.0070.04320.27
5.5.220.0070.04720.21
5.5.210.0100.06020.22
5.5.200.0000.04320.09
5.5.190.0070.03320.28
5.5.180.0000.04320.15
5.5.160.0070.03320.14
5.5.150.0070.03320.27
5.5.140.0030.04020.12
5.5.130.0030.04020.11
5.5.120.0070.03720.22
5.5.110.0100.03720.08
5.5.100.0000.06020.05
5.5.90.0070.03720.06
5.5.80.0070.03720.11
5.5.70.0030.04020.04
5.5.60.0070.03720.06
5.5.50.0100.03319.93
5.5.40.0000.04020.15
5.5.30.0030.04020.05
5.5.20.0030.05020.03
5.5.10.0130.03020.00
5.5.00.0030.04020.07
5.4.450.0100.07319.42
5.4.440.0000.05019.46
5.4.430.0130.07319.21
5.4.420.0100.05319.36
5.4.410.0100.07019.34
5.4.400.0230.06719.16
5.4.390.0030.04719.04
5.4.380.0070.04319.18
5.4.370.0130.06018.91
5.4.360.0000.04318.95
5.4.350.0000.04319.05
5.4.340.0030.04019.23
5.4.320.0030.04019.25
5.4.310.0070.03719.04
5.4.300.0070.04019.12
5.4.290.0030.03719.02
5.4.280.0030.03718.89
5.4.270.0000.04019.12
5.4.260.0000.04319.12
5.4.250.0030.05019.15
5.4.240.0070.04019.12
5.4.230.0000.04018.94
5.4.220.0070.03319.04
5.4.210.0030.04019.27
5.4.200.0030.04019.15
5.4.190.0030.03719.19
5.4.180.0000.03719.02
5.4.170.0070.03719.22
5.4.160.0070.03718.89
5.4.150.0070.04319.11
5.4.140.0030.03716.25
5.4.130.0070.03316.33
5.4.120.0030.03716.31
5.4.110.0070.03316.51
5.4.100.0100.03016.33
5.4.90.0030.04016.50
5.4.80.0070.03316.32
5.4.70.0000.04016.31
5.4.60.0000.04016.46
5.4.50.0000.04316.36
5.4.40.0000.03316.52
5.4.30.0100.03016.47
5.4.20.0030.03716.47
5.4.10.0030.03316.46
5.4.00.0000.03715.79
5.3.290.0070.03714.72
5.3.280.0070.06714.56
5.3.270.0000.04314.66
5.3.260.0070.04014.54
5.3.250.0100.04714.55
5.3.240.0030.03714.58
5.3.230.0000.04014.73
5.3.220.0070.03314.59
5.3.210.0000.04014.62
5.3.200.0030.03714.58
5.3.190.0070.03014.62
5.3.180.0030.03714.70
5.3.170.0000.04014.67
5.3.160.0000.03314.51
5.3.150.0030.03314.70
5.3.140.0070.03014.58
5.3.130.0000.04014.55
5.3.120.0070.03314.53
5.3.110.0000.03714.47
5.3.100.0030.04314.16
5.3.90.0030.03713.94
5.3.80.0130.02714.12
5.3.70.0000.04314.12
5.3.60.0130.02714.14
5.3.50.0030.03713.97
5.3.40.0070.03714.07
5.3.30.0130.02713.92
5.3.20.0000.03313.60
5.3.10.0100.06313.79
5.3.00.0030.06013.56
5.2.170.0070.02711.13
5.2.160.0030.02711.21
5.2.150.0000.03311.27
5.2.140.0000.02711.13
5.2.130.0030.02311.05
5.2.120.0100.02011.17
5.2.110.0000.06711.22
5.2.100.0030.06011.05
5.2.90.0070.03011.19
5.2.80.0070.04011.23
5.2.70.0000.05011.13
5.2.60.0070.05711.05
5.2.50.0100.04311.05
5.2.40.0030.04311.13
5.2.30.0030.05311.05
5.2.20.0070.05711.05
5.2.10.0030.04011.05
5.2.00.0000.04311.05
5.1.60.0070.04011.05
5.1.50.0170.04011.05
5.1.40.0070.03711.05
5.1.30.0030.04711.05
5.1.20.0000.05311.05
5.1.10.0070.05011.05
5.1.00.0070.02711.05
5.0.50.0070.04311.05
5.0.40.0030.04011.05
5.0.30.0000.04311.05
5.0.20.0070.03011.05
5.0.10.0000.03711.05
5.0.00.0030.06711.05
4.4.90.0030.03011.05
4.4.80.0070.01311.05
4.4.70.0030.02711.05
4.4.60.0000.01711.05
4.4.50.0030.03311.05
4.4.40.0030.05011.05
4.4.30.0070.03011.05
4.4.20.0000.03011.05
4.4.10.0030.03311.05
4.4.00.0000.03011.05
4.3.110.0030.01711.05
4.3.100.0070.02711.05
4.3.90.0100.02711.05
4.3.80.0030.04311.05
4.3.70.0000.03311.05
4.3.60.0000.02711.05
4.3.50.0000.02011.05
4.3.40.0070.01711.05
4.3.30.0030.03311.05
4.3.20.0000.02311.05
4.3.10.0030.01711.05
4.3.00.0000.02311.05

preferences:
37.74 ms | 401 KiB | 5 Q