3v4l.org

run code in 300+ PHP versions simultaneously
<?php // standard string append $starttime = microtime(true); $str = ''; for ($i = 0; $i < 30000; $i++) { $str .= 'String concatenation. ' . $i; } $x = md5($str); unset($str); $endtime = microtime(true); print "string concat: " . ($endtime - $starttime) . " s\n" ; $starttime = microtime(true); $sArr = array(); for ($i = 0; $i < 30000; $i++) { $sArr[] = 'String concatenation. ' . $i; } $str = implode('', $sArr); $x = md5($str); $endtime = microtime(true); print "array append & implode: " . ($endtime - $starttime) . " s\n" ; $starttime = microtime(true); $sArr = array(); for ($i = 0; $i < 30000; $i++) { $sArr[] = 'String concatenation. ' . $i; } $str = implode('', $sArr); $x = md5($str); $endtime = microtime(true); print "array append & implode: " . ($endtime - $starttime) . " s\n" ;

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)
7.2.00.0260.02023.33
7.1.70.0030.01521.13
7.1.60.0030.04420.87
7.1.50.0060.01620.67
7.1.00.0000.08726.24
7.0.200.0220.01320.95
7.0.140.0070.08726.08
7.0.60.0000.10025.77
7.0.50.0030.10026.12
7.0.40.0000.10320.03
7.0.30.0000.05320.19
7.0.20.0070.07720.19
7.0.10.0000.08319.99
7.0.00.0000.10720.07
5.6.280.0030.11328.11
5.6.210.0130.10327.91
5.6.200.0170.10728.29
5.6.190.0200.08328.39
5.6.180.0030.06728.14
5.6.170.0030.10028.37
5.6.160.0170.10328.23
5.6.150.0070.11728.37
5.6.140.0070.12028.24
5.6.130.0030.07028.24
5.6.120.0000.09728.38
5.6.110.0100.08728.38
5.6.100.0030.10328.35
5.6.90.0070.11328.24
5.6.80.0030.08027.75
5.6.70.0130.10327.75
5.6.60.0200.09027.74
5.6.50.0030.09727.64
5.6.40.0130.10327.50
5.6.30.0070.09727.75
5.6.20.0070.06327.59
5.6.10.0100.07727.72
5.6.00.0130.06327.49
5.5.350.0130.10027.65
5.5.340.0100.11328.01
5.5.330.0030.06728.04
5.5.320.0030.06728.05
5.5.310.0070.10028.12
5.5.300.0070.11328.12
5.5.290.0130.10327.98
5.5.280.0130.06328.09
5.5.270.0130.09028.13
5.5.260.0030.06328.13
5.5.250.0030.12027.93
5.5.240.0030.11727.61
5.5.230.0000.11727.40
5.5.220.0130.10327.46
5.5.210.0070.12027.49
5.5.200.0070.10327.50
5.5.190.0070.10327.47
5.5.180.0070.06727.36
5.5.160.0030.09027.44
5.5.150.0000.11327.36
5.5.140.0000.10727.27
5.5.130.0170.10327.32
5.5.120.0070.07727.55
5.5.110.0130.10727.53
5.5.100.0030.11728.11
5.5.90.0130.09027.34
5.5.80.0130.10327.36
5.5.70.0100.11327.35
5.5.60.0170.10327.37
5.5.50.0030.11327.21
5.5.40.0070.10027.32
5.5.30.0130.09327.31
5.5.20.0030.11327.30
5.5.10.0130.10327.24
5.5.00.0070.11327.22
5.4.450.0100.07326.52
5.4.440.0030.11326.48
5.4.430.0100.08326.47
5.4.420.0070.05726.49
5.4.410.0030.07326.28
5.4.400.0100.09726.33
5.4.390.0200.09026.21
5.4.380.0000.11726.21
5.4.370.0070.11026.05
5.4.360.0070.06026.11
5.4.350.0170.09726.36
5.4.340.0070.08026.13
5.4.320.0200.08026.14
5.4.310.0030.09326.03
5.4.300.0030.07726.19
5.4.290.0070.09726.14
5.4.280.0100.06726.30
5.4.270.0100.09326.12
5.4.260.0030.10326.21
5.4.250.0030.10726.16
5.4.240.0030.11026.13
5.4.230.0070.11326.19
5.4.220.0170.10326.16
5.4.210.0030.10726.03
5.4.200.0070.11726.20
5.4.190.0200.08726.12
5.4.180.0100.10026.32
5.4.170.0170.10026.32
5.4.160.0170.09026.19
5.4.150.0170.10326.15
5.4.140.0000.06723.52
5.4.130.0030.09323.54
5.4.120.0030.10323.43
5.4.110.0030.10323.52
5.4.100.0070.10323.66
5.4.90.0100.10023.57
5.4.80.0070.07723.60
5.4.70.0100.09723.51
5.4.60.0030.07023.45
5.4.50.0170.09323.40
5.4.40.0100.09723.59
5.4.30.0070.10723.43
5.4.20.0000.07723.59
5.4.10.0030.11023.46
5.4.00.0030.11023.01
5.3.290.0030.09721.78
5.3.280.0170.10021.71
5.3.270.0130.11021.76
5.3.260.0130.10721.69
5.3.250.0100.10721.66
5.3.240.0130.10321.63
5.3.230.0130.08721.73
5.3.220.0070.11021.70
5.3.210.0070.11021.70
5.3.200.0000.10021.75
5.3.190.0030.09021.70
5.3.180.0000.11321.68
5.3.170.0070.11021.72
5.3.160.0070.11021.74
5.3.150.0100.06721.61
5.3.140.0070.11721.73
5.3.130.0100.10721.71
5.3.120.0030.10721.72
5.3.110.0100.08321.52
5.3.100.0170.09321.19
5.3.90.0000.11721.20
5.3.80.0070.10721.09
5.3.70.0130.10021.11
5.3.60.0170.08721.02
5.3.50.0130.09721.01
5.3.40.0100.09320.99
5.3.30.0030.09721.02
5.3.20.0070.10720.71
5.3.10.0100.09020.76
5.3.00.0000.11320.55
5.2.170.0000.11018.04
5.2.160.0170.09317.97
5.2.150.0000.10717.95
5.2.140.0070.11017.79
5.2.130.0100.09717.75
5.2.120.0170.09317.91
5.2.110.0100.10019.11
5.2.100.0100.08317.80
5.2.90.0000.10317.96
5.2.80.0070.09317.92
5.2.70.0070.10317.75
5.2.60.0030.09717.91
5.2.50.0030.10717.46
5.2.40.0030.10017.59
5.2.30.0170.10017.51
5.2.20.0100.10017.45
5.2.10.0070.10017.90
5.2.00.0030.09017.55
5.1.60.0130.07021.84
5.1.50.0030.06721.86
5.1.40.0070.08721.77
5.1.30.0200.09722.20
5.1.20.0100.11722.17
5.1.10.0030.11721.93
5.1.00.0130.10721.99
5.0.50.0070.13020.43
5.0.40.0130.12320.17
5.0.30.0100.12720.12
5.0.20.0070.10020.07
5.0.10.0000.08020.05
5.0.00.0000.08720.00
4.4.90.0100.12721.97
4.4.80.0030.08721.92
4.4.70.0030.12321.95
4.4.60.0130.12721.91
4.4.50.0130.11721.93
4.4.40.0030.08721.35
4.4.30.0030.13322.01
4.4.20.0070.11322.06
4.4.10.0100.11722.02
4.4.00.0100.14021.94
4.3.110.0170.12721.88
4.3.100.0070.13321.84
4.3.90.0000.08321.84
4.3.80.0070.08321.71
4.3.70.0070.07721.81
4.3.60.0030.07321.83
4.3.50.0030.07721.84
4.3.40.0070.06321.83
4.3.30.0000.06320.54
4.3.20.0030.07020.59
4.3.10.0070.06716.35
4.3.00.0070.07316.41

preferences:
37.35 ms | 401 KiB | 5 Q