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($first)) > 0) { return trim($first); } else { return trim($last); } } //@NelinD function v4($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)
8.3.60.0100.01016.75
8.3.50.0060.01721.97
8.3.40.0070.00718.79
8.3.30.0100.01018.73
8.3.20.0040.00420.30
8.3.10.0090.00023.67
8.3.00.0040.00419.38
8.2.180.0120.00325.92
8.2.170.0090.00918.94
8.2.160.0090.00622.96
8.2.150.0040.00425.66
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0100.00017.63
8.2.110.0050.00521.12
8.2.100.0100.00617.90
8.2.90.0080.00018.28
8.2.80.0040.00420.57
8.2.70.0040.00418.03
8.2.60.0000.00918.22
8.2.50.0040.00418.10
8.2.40.0050.00321.25
8.2.30.0000.00720.56
8.2.20.0040.00417.88
8.2.10.0040.00418.24
8.2.00.0040.00418.16
8.1.280.0070.01125.92
8.1.270.0040.00423.96
8.1.260.0040.00426.35
8.1.250.0070.00728.09
8.1.240.0060.00322.20
8.1.230.0110.00022.66
8.1.220.0040.00417.79
8.1.210.0030.00518.97
8.1.200.0000.01317.38
8.1.190.0030.00517.22
8.1.180.0060.00318.10
8.1.170.0050.00318.42
8.1.160.0000.00722.07
8.1.150.0040.00418.84
8.1.140.0050.00319.59
8.1.130.0000.00717.55
8.1.120.0000.00817.41
8.1.110.0050.00317.51
8.1.100.0050.00217.40
8.1.90.0080.00017.53
8.1.80.0070.00017.52
8.1.70.0000.00717.53
8.1.60.0030.00517.60
8.1.50.0030.00617.46
8.1.40.0080.00017.57
8.1.30.0040.00417.73
8.1.20.0030.00617.63
8.1.10.0040.00817.44
8.1.00.0040.00417.46
8.0.300.0070.00020.27
8.0.290.0040.00416.88
8.0.280.0030.00318.50
8.0.270.0000.00817.21
8.0.260.0000.00718.41
8.0.250.0000.00716.89
8.0.240.0000.00816.99
8.0.230.0050.00317.01
8.0.220.0040.00416.95
8.0.210.0000.01116.96
8.0.200.0040.00417.06
8.0.190.0050.00217.06
8.0.180.0050.00216.89
8.0.170.0030.00616.93
8.0.160.0000.00816.90
8.0.150.0000.00816.85
8.0.140.0050.00216.89
8.0.130.0030.00313.33
8.0.120.0030.00516.88
8.0.110.0070.00016.86
8.0.100.0000.00817.00
8.0.90.0040.00416.79
8.0.80.0130.00316.94
8.0.70.0040.00416.82
8.0.60.0040.00417.00
8.0.50.0000.00716.89
8.0.30.0070.01017.15
8.0.20.0110.01117.44
8.0.10.0080.00016.98
8.0.00.0100.01116.85
7.4.330.0000.00615.08
7.4.320.0060.00016.48
7.4.300.0060.00016.57
7.4.290.0040.00416.66
7.4.280.0050.00216.46
7.4.270.0030.00316.64
7.4.260.0030.00616.40
7.4.250.0050.00316.61
7.4.240.0040.00416.57
7.4.230.0030.00316.71
7.4.220.0130.01316.66
7.4.210.0060.00916.76
7.4.200.0070.00016.75
7.4.160.0130.00416.54
7.4.150.0160.00317.40
7.4.140.0080.01117.86
7.4.130.0070.01216.58
7.4.120.0080.01216.51
7.4.110.0100.01616.66
7.4.100.0060.01216.47
7.4.90.0110.00916.44
7.4.80.0030.01419.39
7.4.70.0200.01716.55
7.4.60.0030.01416.41
7.4.50.0000.00816.52
7.4.40.0140.00316.52
7.4.30.0060.01216.65
7.4.00.0110.00515.21
7.3.330.0000.00613.42
7.3.320.0000.00613.22
7.3.310.0030.00316.27
7.3.300.0000.00716.30
7.3.290.0070.01016.42
7.3.280.0110.00716.40
7.3.270.0110.01417.40
7.3.260.0100.01016.60
7.3.250.0090.01016.51
7.3.240.0170.00416.38
7.3.230.0090.00916.47
7.3.210.0060.01216.40
7.3.200.0080.00816.42
7.3.190.0060.01516.41
7.3.180.0080.00816.55
7.3.170.0090.00916.49
7.3.160.0100.00716.34
7.3.120.0110.00714.80
7.3.110.0150.00015.17
7.3.100.0110.00415.09
7.3.90.0060.00314.78
7.3.80.0060.00914.81
7.3.70.0030.01015.06
7.3.60.0030.00614.69
7.3.50.0000.01715.09
7.3.40.0070.00414.85
7.3.30.0110.00014.91
7.3.20.0030.01016.73
7.3.10.0060.00716.67
7.3.00.0020.01116.64
7.2.330.0030.01616.71
7.2.320.0140.00416.61
7.2.310.0150.00416.85
7.2.300.0060.01516.62
7.2.290.0220.01616.64
7.2.250.0180.00015.22
7.2.240.0100.01015.21
7.2.230.0030.01015.33
7.2.220.0000.01415.21
7.2.210.0070.00714.74
7.2.200.0080.00615.09
7.2.190.0090.00014.98
7.2.180.0040.01114.83
7.2.170.0060.01014.82
7.2.130.0060.00917.08
7.2.120.0040.00817.02
7.2.110.0030.01316.86
7.2.100.0030.01016.94
7.2.90.0030.01217.11
7.2.80.0060.00616.86
7.2.70.0000.01417.04
7.2.60.0030.01016.85
7.2.50.0000.01017.06
7.2.40.0030.00716.78
7.2.30.0140.00317.01
7.2.20.0040.00816.70
7.2.10.0030.00816.94
7.2.00.0070.00618.23
7.1.330.0130.00015.99
7.1.320.0110.00415.73
7.1.310.0120.00015.71
7.1.300.0110.00315.73
7.1.290.0070.00715.91
7.1.280.0030.01015.91
7.1.270.0070.00715.82
7.1.260.0120.00315.66
7.1.250.0060.00615.83
7.1.200.0090.00615.82
7.1.100.0030.01018.05
7.1.70.0000.00917.09
7.1.60.0170.00319.43
7.1.50.0070.01116.63
7.1.00.0100.07022.36
7.0.200.1050.00714.75
7.0.60.0100.08719.92
7.0.50.0030.08317.91
7.0.40.0170.07320.11
7.0.30.0000.09020.23
7.0.20.0200.04320.24
7.0.10.0070.06020.12
7.0.00.0070.08720.23
5.6.280.0030.06721.12
5.6.210.0100.07720.63
5.6.200.0130.07318.15
5.6.190.0100.07020.39
5.6.180.0530.04320.68
5.6.170.0170.08320.71
5.6.160.0100.06020.61
5.6.150.0070.08018.19
5.6.140.0070.03718.14
5.6.130.0070.05018.13
5.6.120.0000.05321.04
5.6.110.0100.07721.03
5.6.100.0070.08021.03
5.6.90.0000.04721.00
5.6.80.0130.07320.44
5.5.350.0400.06720.35
5.5.340.0100.08017.96
5.5.330.0100.08020.47
5.5.320.0270.07720.34
5.5.310.0300.07320.42
5.5.300.0200.04718.08
5.5.290.0100.08017.98
5.5.280.0030.04020.85
5.5.270.0100.05320.88
5.5.260.0070.06720.69
5.5.250.0070.04020.73
5.5.240.0030.06020.21
5.4.450.0270.05719.46
5.4.440.0130.06319.71
5.4.430.0230.05319.54
5.4.420.0270.05719.42
5.4.410.0070.06019.04
5.4.400.0200.05018.97
5.4.390.0100.06019.38
5.4.380.0230.05319.25
5.4.370.0670.05019.13
5.4.360.0630.05719.37
5.4.350.0100.05719.01
5.4.340.0230.05719.28
5.4.320.0330.05719.14
5.4.310.0600.04319.23
5.4.300.0100.06719.28
5.4.290.0130.05318.82
5.4.280.0200.04719.10
5.4.270.0370.06719.25
5.4.260.0230.06019.41
5.4.250.0100.06319.25
5.4.240.0030.06718.82
5.4.230.0370.06019.22
5.4.220.0200.07019.14
5.4.210.0030.07019.31
5.4.200.0200.07319.06
5.4.190.0330.04019.29
5.4.180.0330.05319.27
5.4.170.0230.05318.82
5.4.160.0300.06319.13
5.4.150.0270.06319.29
5.4.140.0200.05016.45
5.4.130.0100.06716.45
5.4.120.0330.04016.46
5.4.110.0130.05716.66
5.4.100.0170.04316.70
5.4.90.0300.04316.65
5.4.80.0230.04716.61
5.4.70.0200.05316.24
5.4.60.0130.05016.67
5.4.50.0200.05716.59
5.4.40.0230.05316.27
5.4.30.0200.06016.41
5.4.20.0200.05316.17
5.4.10.0170.05316.57
5.4.00.0230.05016.18

preferences:
55 ms | 401 KiB | 5 Q