3v4l.org

run code in 300+ PHP versions simultaneously
<?php function v1($first, $last) { $result = trim($first); $lastName = trim($last); if ($lastName) { if (!empty($result)) { $result .= ' '; } $result .= $lastName; } return $result; } function v2($first, $last) { return implode(" ", [trim($first), trim($last)]); } function v3($str1, $str2) { return (strlen($str1) > 0 && strlen($str2) > 0) ? ($str1 + " " + $str2) : (strlen($str1) > 0) ? $str1 : $str2 ; } function v($first, $last) { echo v1($first, $last); echo PHP_EOL; echo v2($first, $last); echo PHP_EOL; echo v3($first, $last); } v('first', 'second');

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)
8.3.60.0120.00616.75
8.3.50.0110.00721.94
8.3.40.0150.00018.85
8.3.30.0110.00318.46
8.3.20.0080.00020.29
8.3.10.0080.00023.66
8.3.00.0090.00019.25
8.2.180.0090.00618.36
8.2.170.0160.00022.96
8.2.160.0110.00422.26
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0090.00017.50
8.2.110.0090.00020.87
8.2.100.0040.00817.74
8.2.90.0000.00817.91
8.2.80.0040.00417.97
8.2.70.0040.00417.91
8.2.60.0060.00317.91
8.2.50.0090.00018.10
8.2.40.0040.00421.09
8.2.30.0000.00720.50
8.2.20.0030.00517.54
8.2.10.0000.00717.93
8.2.00.0040.00417.91
8.1.280.0140.00725.92
8.1.270.0030.00623.96
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0080.00022.13
8.1.230.0110.00020.81
8.1.220.0050.00517.74
8.1.210.0000.00818.91
8.1.200.0040.00417.23
8.1.190.0060.00317.10
8.1.180.0060.00318.10
8.1.170.0030.00518.66
8.1.160.0000.00821.95
8.1.150.0050.00318.78
8.1.140.0040.00419.39
8.1.130.0000.00717.48
8.1.120.0070.00017.35
8.1.110.0030.00417.21
8.1.100.0000.00817.22
8.1.90.0040.00417.34
8.1.80.0030.00617.28
8.1.70.0030.00317.33
8.1.60.0040.00417.39
8.1.50.0000.00817.36
8.1.40.0040.00417.28
8.1.30.0040.00417.44
8.1.20.0080.00017.43
8.1.10.0000.00717.37
8.1.00.0030.00717.32
8.0.300.0050.00319.69
8.0.290.0050.00316.63
8.0.280.0080.00018.29
8.0.270.0040.00417.14
8.0.260.0040.00417.14
8.0.250.0040.00416.87
8.0.240.0030.00316.94
8.0.230.0070.00016.84
8.0.220.0030.00316.80
8.0.210.0040.00416.88
8.0.200.0030.00316.92
8.0.190.0050.00316.89
8.0.180.0050.00316.88
8.0.170.0060.00316.73
8.0.160.0000.00716.85
8.0.150.0070.00016.75
8.0.140.0070.00016.70
8.0.130.0000.00513.25
8.0.120.0030.00616.78
8.0.110.0080.00016.82
8.0.100.0000.00816.87
8.0.90.0000.00716.77
8.0.80.0100.00316.88
8.0.70.0040.00416.70
8.0.60.0040.00416.87
8.0.50.0040.00416.73
8.0.30.0080.00716.90
8.0.20.0090.00917.40
8.0.10.0040.00416.90
8.0.00.0080.00816.76
7.4.330.0020.00215.20
7.4.320.0000.00616.41
7.4.300.0070.00016.43
7.4.290.0050.00216.50
7.4.280.0000.00816.48
7.4.270.0070.00016.52
7.4.260.0070.00016.48
7.4.250.0000.00716.62
7.4.240.0040.00316.52
7.4.230.0000.00716.71
7.4.220.0130.01016.53
7.4.210.0110.00416.55
7.4.200.0030.00316.71
7.4.160.0120.00416.52
7.4.150.0060.01217.40
7.4.140.0170.00817.86
7.4.130.0080.01116.51
7.4.120.0070.01016.69
7.4.110.0150.00916.36
7.4.100.0100.01316.60
7.4.90.0060.01216.56
7.4.80.0040.01519.39
7.4.70.0160.00516.62
7.4.60.0080.00816.58
7.4.50.0040.00416.33
7.4.40.0120.00616.43
7.4.30.0100.01316.73
7.4.00.0030.01115.08
7.3.330.0000.00513.27
7.3.320.0050.00013.46
7.3.310.0000.00716.49
7.3.300.0040.00416.28
7.3.290.0080.00716.42
7.3.280.0050.01316.43
7.3.270.0140.00417.40
7.3.260.0080.00816.41
7.3.250.0100.00616.55
7.3.240.0120.00916.55
7.3.230.0160.00016.39
7.3.210.0060.00916.52
7.3.200.0110.00516.38
7.3.190.0050.01516.53
7.3.180.0070.01016.39
7.3.170.0120.00416.49
7.3.160.0100.00616.55
7.2.330.0140.00316.84
7.2.320.0060.01316.63
7.2.310.0120.00616.72
7.2.300.0070.01116.92
7.2.290.0100.01016.70
7.2.60.0000.00916.66
7.2.00.0070.00719.37
7.1.200.0070.00315.60
7.1.100.0090.00618.34
7.1.70.0000.01317.19
7.1.60.0070.01719.43
7.1.50.0100.01317.15
7.1.00.0070.07322.46
7.0.200.0410.00014.81
7.0.60.0130.07020.01
7.0.50.0030.09017.97
7.0.40.0030.04720.13
7.0.30.0100.08020.16
7.0.20.0300.05020.08
7.0.10.0070.04020.20
7.0.00.0030.04020.10
5.6.210.0170.04320.67
5.6.200.0100.08018.20
5.6.190.0130.04720.55
5.6.180.0230.06320.55
5.6.170.0400.06320.41
5.6.160.0100.03320.46
5.6.150.0070.08018.18
5.6.140.0070.04318.13
5.6.130.0100.07718.29
5.6.120.0070.06320.99
5.6.110.0170.05020.89
5.6.100.0030.04020.99
5.6.90.0130.07720.96
5.6.80.0170.07320.30
5.5.350.0430.06320.39
5.5.340.0070.06017.94
5.5.330.0030.04320.35
5.5.320.0300.07020.41
5.5.310.0300.04720.24
5.5.300.0070.08317.98
5.5.290.0030.04018.01
5.5.280.0030.04720.80
5.5.270.0000.05320.89
5.5.260.0000.05020.80
5.5.250.0070.03720.59
5.5.240.0070.06320.16
5.4.450.0200.06319.56
5.4.440.0330.07019.28
5.4.430.0270.07319.17
5.4.420.0330.06719.52
5.4.410.0330.07719.51
5.4.400.0300.04018.98
5.4.390.0570.03719.27
5.4.380.0370.06019.20
5.4.370.0230.04719.13
5.4.360.0270.06719.22
5.4.350.0300.06019.07
5.4.340.0300.04718.85
5.4.320.0300.05719.24
5.4.310.0400.06318.98
5.4.300.0270.03318.87
5.4.290.0370.04019.21
5.4.280.0300.07019.06
5.4.270.0270.04018.85
5.4.260.0300.07018.98
5.4.250.0400.06319.21
5.4.240.0270.07719.07
5.4.230.0370.07319.06
5.4.220.0230.07718.87
5.4.210.0330.03318.84
5.4.200.0300.04319.21
5.4.190.0270.07719.07
5.4.180.0300.07319.12
5.4.170.0230.06319.21
5.4.160.0300.07019.13
5.4.150.0270.05319.06
5.4.140.0270.04716.38
5.4.130.0330.06016.38
5.4.120.0300.05716.38
5.4.110.0370.06316.50
5.4.100.0300.07016.51
5.4.90.0270.06316.51

preferences:
55.93 ms | 401 KiB | 5 Q