3v4l.org

run code in 300+ PHP versions simultaneously
<?php //old code function v1($first, $last) { $result = trim($first); $lastName = trim($last); if ($lastName) { if (!empty($result)) { $result .= ' '; } $result .= $lastName; } return $result; } //@Big-Shark function v2($first, $last) { return trim(implode(" ", [$first, $last])); } //@Hunternnm function v3($first, $last) { if(strlen(trim($first)) > 0 && strlen(trim($last)) > 0) { return $first." ".$last; } if(strlen(trim($first)) > 0) { return $first; } else { return $last; } } //@NelinD function v4($first, $last) { return implode(' ', array_filter([$first, $last], function ($string) { return trim($string); })); } //@NelinD function v5($first, $last) { return trim(trim($first).' '.trim($last)); } //@Big-Shark function v6($first, $last) { return trim($first.' '.$last); } function v($first, $last) { var_dump( v1($first, $last) ); var_dump( v2($first, $last) ); var_dump( v3($first, $last) ); var_dump( v4($first, $last) ); var_dump( v5($first, $last) ); var_dump( v6($first, $last) ); echo PHP_EOL; echo PHP_EOL; } v('first', 'last'); v('first', ''); v('first', ' '); v('', ' в last'); v(' ', ' в last'); v(' ', ' в last');

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)
8.3.60.0060.01516.63
8.3.50.0140.00822.04
8.3.40.0180.00018.68
8.3.30.0070.01418.81
8.3.20.0040.00420.39
8.3.10.0080.00023.53
8.3.00.0060.00319.35
8.2.180.0120.00316.48
8.2.170.0140.00422.96
8.2.160.0070.01422.13
8.2.150.0100.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0030.00617.50
8.2.110.0030.00620.43
8.2.100.0080.00417.72
8.2.90.0000.00819.35
8.2.80.0000.00817.97
8.2.70.0090.00017.49
8.2.60.0040.00418.16
8.2.50.0080.00018.07
8.2.40.0040.00419.46
8.2.30.0030.00520.71
8.2.20.0040.00417.85
8.2.10.0070.00018.18
8.2.00.0050.00318.24
8.1.280.0120.00625.92
8.1.270.0080.00023.96
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0060.00623.76
8.1.230.0000.01122.73
8.1.220.0090.00017.74
8.1.210.0060.00318.77
8.1.200.0060.00317.38
8.1.190.0090.00017.25
8.1.180.0040.00418.10
8.1.170.0050.00319.00
8.1.160.0000.00821.98
8.1.150.0060.00318.86
8.1.140.0000.00819.66
8.1.130.0000.00817.80
8.1.120.0080.00017.57
8.1.110.0040.00417.34
8.1.100.0070.00017.50
8.1.90.0040.00417.53
8.1.80.0060.00317.48
8.1.70.0030.00317.41
8.1.60.0000.00917.60
8.1.50.0000.00817.55
8.1.40.0030.00617.59
8.1.30.0000.00917.68
8.1.20.0060.00317.54
8.1.10.0040.00717.54
8.1.00.0030.00617.44
8.0.300.0060.00318.77
8.0.290.0000.00716.88
8.0.280.0030.00318.41
8.0.270.0040.00417.31
8.0.260.0000.00717.31
8.0.250.0040.00416.92
8.0.240.0000.00717.03
8.0.230.0040.00417.05
8.0.220.0050.00216.99
8.0.210.0060.00316.97
8.0.200.0050.00216.97
8.0.190.0040.00417.04
8.0.180.0040.00416.95
8.0.170.0040.00416.95
8.0.160.0060.00316.92
8.0.150.0040.00416.79
8.0.140.0000.00716.91
8.0.130.0000.00713.37
8.0.120.0040.00416.92
8.0.110.0040.00416.90
8.0.100.0000.00816.95
8.0.90.0040.00416.89
8.0.80.0060.00916.91
8.0.70.0050.00216.98
8.0.60.0080.00016.84
8.0.50.0000.00817.01
8.0.30.0140.00516.91
8.0.20.0130.01117.40
8.0.10.0020.00517.02
8.0.00.0150.00616.71
7.4.330.0000.00515.21
7.4.320.0000.00716.58
7.4.300.0000.00616.55
7.4.290.0000.00716.52
7.4.280.0000.00716.47
7.4.270.0040.00416.53
7.4.260.0090.00016.57
7.4.250.0020.00516.52
7.4.240.0000.00716.63
7.4.230.0000.00716.54
7.4.220.0130.00616.45
7.4.210.0090.00616.61
7.4.200.0070.00016.46
7.4.160.0060.01216.47
7.4.150.0150.00317.40
7.4.140.0080.01117.86
7.4.130.0070.01016.60
7.4.120.0160.00216.43
7.4.110.0120.01216.51
7.4.100.0120.00616.52
7.4.90.0090.00916.36
7.4.80.0100.00719.39
7.4.70.0070.01116.75
7.4.60.0100.00816.59
7.4.50.0040.00416.52
7.4.40.0110.00816.37
7.4.30.0160.00316.48
7.4.00.0000.01415.16
7.3.330.0060.00013.46
7.3.320.0030.00313.49
7.3.310.0000.00716.46
7.3.300.0030.00316.29
7.3.290.0020.01316.44
7.3.280.0080.01216.39
7.3.270.0100.00717.40
7.3.260.0100.01016.47
7.3.250.0080.01216.51
7.3.240.0130.00616.62
7.3.230.0090.00916.57
7.3.210.0070.01116.61
7.3.200.0150.00316.65
7.3.190.0160.00016.43
7.3.180.0180.00316.55
7.3.170.0110.00616.43
7.3.160.0110.00616.64
7.2.330.0060.01216.81
7.2.320.0090.01716.61
7.2.310.0090.01516.77
7.2.300.0090.00916.71
7.2.290.0030.02316.90
7.2.60.0030.00816.95
7.1.200.0030.01315.77
7.1.100.0000.00917.92
7.1.70.0000.00716.91
7.1.60.0110.01419.43
7.1.50.0040.01216.70
7.1.00.0030.07322.51
7.0.200.0770.00615.11
7.0.60.0130.07319.99
7.0.50.0070.07717.95
7.0.40.0170.08320.35
7.0.30.0030.06720.05
7.0.20.0170.04720.12
7.0.10.0030.08720.20
7.0.00.0070.08320.23
5.6.280.0030.06021.12
5.6.210.0070.08720.68
5.6.200.0030.04718.18
5.6.190.0100.08320.57
5.6.180.0470.06720.50
5.6.170.0300.07320.47
5.6.160.0100.06320.71
5.6.150.0000.04018.18
5.6.140.0070.03318.20
5.6.130.0070.03718.16
5.6.120.0100.07321.00
5.6.110.0130.07721.11
5.6.100.0230.06721.00
5.6.90.0070.04021.04
5.6.80.0100.07020.39
5.5.350.0270.04020.35
5.5.340.0070.06018.09
5.5.330.0070.07720.38
5.5.320.0230.08020.18
5.5.310.0270.07020.32
5.5.300.0030.06017.99
5.5.290.0170.07318.05
5.5.280.0170.03720.91
5.5.270.0030.08020.98
5.5.260.0130.07320.76
5.5.250.0100.06320.70
5.5.240.0070.07020.25
5.4.450.0370.05319.55
5.4.440.0200.07719.17
5.4.430.0330.07019.52
5.4.420.0270.04719.14
5.4.410.0270.05019.41
5.4.400.0070.06319.25
5.4.390.0170.05319.23
5.4.380.0070.06019.09
5.4.370.0130.06718.84
5.4.360.0570.05718.84
5.4.350.0470.07718.80
5.4.340.0430.05719.18
5.4.320.0170.05719.17
5.4.310.0200.07319.09
5.4.300.0070.06718.97
5.4.290.0200.05318.97
5.4.280.0300.06019.23
5.4.270.0300.06319.23
5.4.260.0470.06719.24
5.4.250.0530.07019.22
5.4.240.0200.05019.09
5.4.230.0570.07319.23
5.4.220.0170.05718.96
5.4.210.0370.05019.21
5.4.200.0200.05719.23
5.4.190.0170.07319.10
5.4.180.0300.06019.01
5.4.170.0700.06719.20
5.4.160.0400.05319.15
5.4.150.0270.06019.12
5.4.140.0230.05016.41
5.4.130.0200.06316.43
5.4.120.0400.05016.57
5.4.110.0230.05316.69
5.4.100.0200.05716.61
5.4.90.0500.04716.46
5.4.80.0570.04716.54
5.4.70.0130.05016.54
5.4.60.0500.05316.61
5.4.50.0500.05316.61
5.4.40.0530.04716.26
5.4.30.0300.06016.50
5.4.20.0230.05016.23
5.4.10.0270.05316.48
5.4.00.0230.04715.79

preferences:
51.43 ms | 401 KiB | 5 Q