3v4l.org

run code in 300+ PHP versions simultaneously
<?php function displayR($a, $b) { return implode(' ', [$a, $b]); } $i = 1; $sR1S1 = 'Hello'; $nR1S1P = 'World'; echo displayR(${"sR{$i}S1"}, ${"nR{$i}S1P"});

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)
8.3.40.0140.00018.76
8.3.30.0030.01219.23
8.3.20.0040.00420.25
8.3.10.0040.00421.80
8.3.00.0040.00419.14
8.2.170.0100.00322.96
8.2.160.0100.00320.45
8.2.150.0040.00424.18
8.2.140.0060.00324.66
8.2.130.0040.00426.16
8.2.120.0020.00522.08
8.2.110.0030.00621.00
8.2.100.0030.00917.78
8.2.90.0040.00417.74
8.2.80.0000.00817.97
8.2.70.0080.00017.93
8.2.60.0080.00018.03
8.2.50.0080.00018.10
8.2.40.0000.00922.35
8.2.30.0080.00020.63
8.2.20.0050.00217.64
8.2.10.0000.00717.99
8.2.00.0070.00317.72
8.1.270.0040.00418.88
8.1.260.0040.00426.35
8.1.250.0050.00228.09
8.1.240.0040.00423.89
8.1.230.0080.00417.70
8.1.220.0030.00517.74
8.1.210.0030.00618.77
8.1.200.0060.00317.35
8.1.190.0000.00918.98
8.1.180.0060.00318.10
8.1.170.0000.00818.40
8.1.160.0040.00418.90
8.1.150.0000.00718.77
8.1.140.0000.00717.37
8.1.130.0070.00017.71
8.1.120.0070.00017.38
8.1.110.0000.00817.46
8.1.100.0040.00417.45
8.1.90.0000.00817.47
8.1.80.0040.00417.53
8.1.70.0000.00617.45
8.1.60.0000.00817.61
8.1.50.0070.00017.55
8.1.40.0040.00417.54
8.1.30.0000.00817.59
8.1.20.0040.00417.74
8.1.10.0040.00417.40
8.1.00.0070.00017.35
8.0.300.0000.00818.77
8.0.290.0030.00616.63
8.0.280.0000.00718.46
8.0.270.0050.00217.26
8.0.260.0000.00617.14
8.0.250.0040.00416.84
8.0.240.0060.00017.03
8.0.230.0060.00316.95
8.0.220.0030.00316.88
8.0.210.0070.00016.80
8.0.200.0000.00616.93
8.0.190.0000.00817.00
8.0.180.0050.00316.92
8.0.170.0030.00616.94
8.0.160.0030.00316.80
8.0.150.0070.00016.75
8.0.140.0000.00716.85
8.0.130.0000.00513.29
8.0.120.0040.00416.89
8.0.110.0000.00716.74
8.0.100.0030.00316.93
8.0.90.0040.00416.78
8.0.80.0140.00316.82
8.0.70.0070.00016.89
8.0.60.0040.00416.81
8.0.50.0000.00716.68
8.0.30.0120.00916.90
8.0.20.0110.00917.40
8.0.10.0040.00417.02
8.0.00.0150.00816.88
7.4.330.0000.00515.03
7.4.320.0030.00316.59
7.4.300.0000.00716.55
7.4.290.0030.00516.43
7.4.280.0040.00416.50
7.4.270.0070.00016.52
7.4.260.0000.00816.52
7.4.250.0030.00316.58
7.4.240.0020.00516.57
7.4.230.0000.00716.35
7.4.220.0070.01516.61
7.4.210.0060.01216.50
7.4.200.0040.00416.71
7.4.160.0030.01316.66
7.4.150.0090.00917.40
7.4.140.0100.01017.86
7.4.130.0090.00816.63
7.4.120.0110.00616.53
7.4.110.0090.00916.34
7.4.100.0130.00316.68
7.4.90.0170.01316.31
7.4.80.0130.00319.39
7.4.70.0120.00616.55
7.4.60.0080.00816.48
7.4.50.0060.00316.45
7.4.40.0070.01116.48
7.4.30.0100.00616.64
7.4.00.0060.01214.86
7.3.330.0020.00613.30
7.3.320.0000.00513.38
7.3.310.0000.00716.37
7.3.300.0030.00316.26
7.3.290.0040.00416.42
7.3.280.0050.01316.43
7.3.270.0150.00917.40
7.3.260.0100.00616.25
7.3.250.0130.00916.49
7.3.240.0130.00716.38
7.3.230.0120.00616.39
7.3.210.0060.01016.54
7.3.200.0050.01119.39
7.3.190.0090.00916.66
7.3.180.0000.01516.68
7.3.170.0160.00316.68
7.3.160.0130.00316.43
7.3.120.0070.01114.68
7.3.110.0090.00614.61
7.3.100.0080.00815.01
7.3.90.0060.01014.93
7.3.80.0100.00014.91
7.3.70.0030.01014.86
7.3.60.0040.00714.92
7.3.50.0100.00015.05
7.3.40.0030.01014.69
7.3.30.0140.00314.93
7.3.20.0030.01316.80
7.3.10.0070.01016.87
7.3.00.0110.00316.76
7.2.330.0120.00616.56
7.2.320.0140.00916.33
7.2.310.0030.01316.45
7.2.300.0130.01016.63
7.2.290.0060.01016.64
7.2.240.0000.01114.84
7.2.230.0040.00814.93
7.2.220.0150.00014.87
7.2.210.0040.01115.13
7.2.200.0090.00614.63
7.2.190.0070.00314.89
7.2.180.0000.01415.07
7.2.170.0000.01314.81
7.2.160.0030.01014.82
7.2.150.0080.00817.04
7.2.140.0120.00317.00
7.2.130.0070.00716.79
7.2.120.0060.00816.85
7.2.110.0040.00817.00
7.2.100.0060.00616.67
7.2.90.0070.00516.95
7.2.80.0060.00716.81
7.2.70.0080.00316.96
7.2.60.0030.00916.91
7.2.50.0050.00616.85
7.2.40.0030.01016.83
7.2.30.0060.00716.95
7.2.20.0010.00916.78
7.2.10.0060.00516.77
7.2.00.0090.00717.44
7.1.330.0030.00915.84
7.1.320.0090.00615.58
7.1.310.0060.00615.48
7.1.300.0000.01415.45
7.1.290.0070.00915.71
7.1.280.0100.00715.43
7.1.270.0070.00715.76
7.1.260.0060.01015.77
7.1.250.0030.00615.72
7.1.240.0090.00415.50
7.1.230.0000.01015.57
7.1.220.0070.00315.77
7.1.210.0090.00615.43
7.1.200.0050.00315.57
7.1.190.0060.00615.44
7.1.180.0100.00715.68
7.1.170.0060.00615.69
7.1.160.0030.00715.79
7.1.150.0040.00815.38
7.1.140.0000.00815.77
7.1.130.0030.00715.68
7.1.120.0040.00715.65
7.1.110.0060.00615.71
7.1.100.0150.00916.94
7.1.90.0000.00815.52
7.1.80.0060.00315.52
7.1.70.0030.00816.26
7.1.60.0090.00917.55
7.1.50.0090.00925.19
7.1.40.0100.00015.82
7.1.30.0030.00715.77
7.1.20.0060.00315.67
7.1.10.0070.00715.52
7.1.00.0020.04018.96
7.0.330.0000.01114.94
7.0.320.0030.00914.99
7.0.310.0050.00514.84
7.0.300.0060.00615.11
7.0.290.0000.00915.01
7.0.280.0040.01115.13
7.0.270.0000.01014.96
7.0.260.0060.00614.96
7.0.250.0030.00615.30
7.0.240.0080.00415.14
7.0.230.0000.01215.25
7.0.220.0060.00915.27
7.0.210.0070.00414.99
7.0.200.0050.00816.11
7.0.190.0000.01214.88
7.0.180.0030.01015.00
7.0.170.0100.00015.21
7.0.160.0030.00715.47
7.0.150.0100.00015.26
7.0.140.0030.03118.50
7.0.130.0050.00515.04
7.0.120.0030.00915.50
7.0.110.0030.00915.39
7.0.100.0070.00015.55
7.0.90.0030.00715.18
7.0.80.0060.00915.59
7.0.70.0090.00615.21
7.0.60.0030.03917.58
7.0.50.0070.04616.50
7.0.40.0030.04716.88
7.0.30.0130.02816.79
7.0.20.0140.02216.80
7.0.10.0080.02716.68
7.0.00.0110.04116.69
5.6.380.0100.00314.21
5.6.370.0070.00714.13
5.6.360.0060.00614.11
5.6.350.0030.00614.11
5.6.340.0040.00414.49
5.6.330.0050.00514.54
5.6.320.0070.00714.56
5.6.310.0040.00414.53
5.6.300.0070.00714.00
5.6.290.0060.00614.21
5.6.280.0040.04017.46
5.6.270.0080.00513.76
5.6.260.0030.00714.39
5.6.250.0030.00914.29
5.6.240.0000.01514.22
5.6.230.0090.00314.24
5.6.220.0070.00714.01
5.6.210.0070.04317.39
5.6.200.0050.02615.97
5.6.190.0030.03317.38
5.6.180.0160.04217.25
5.6.170.0200.03017.36
5.6.160.0140.03417.31
5.6.150.0070.02516.24
5.6.140.0130.04016.14
5.6.130.0090.03616.26
5.6.120.0140.04117.58
5.6.110.0010.02617.58
5.6.100.0090.03417.50
5.6.90.0080.04017.66
5.6.80.0070.04517.18
5.6.70.0060.00614.01
5.6.60.0080.00414.24
5.6.50.0060.00314.16
5.6.40.0070.00714.14
5.6.30.0050.00314.11
5.6.20.0030.01013.95
5.6.10.0040.00813.98
5.6.00.0080.00614.31
5.5.380.0070.00311.11
5.5.370.0030.00711.10
5.5.360.0040.00411.36
5.5.350.0030.04515.90
5.5.340.0060.04214.46
5.5.330.0070.04515.62
5.5.320.0160.04115.59
5.5.310.0190.02915.75
5.5.300.0050.04514.47
5.5.290.0050.04214.54
5.5.280.0020.05115.96
5.5.270.0100.04216.03
5.5.260.0060.04116.09
5.5.250.0100.02715.84
5.5.240.0120.01615.63
5.5.230.0030.00710.90
5.5.220.0040.00411.27
5.5.210.0000.00711.11
5.5.200.0030.00611.20
5.5.190.0070.00310.90
5.5.180.0070.00310.90
5.5.170.0000.01011.24
5.5.160.0060.00611.16
5.5.150.0000.01111.14
5.5.140.0000.01110.96
5.5.130.0030.00711.07
5.5.120.0000.00811.10
5.5.110.0040.00411.04
5.5.100.0060.00010.97
5.5.90.0000.00810.90
5.5.80.0060.00310.90
5.5.70.0000.00510.95
5.5.60.0000.01011.31
5.5.50.0030.00311.18
5.5.40.0000.01111.23
5.5.30.0030.00311.18
5.5.20.0000.00710.90
5.5.10.0000.00811.19
5.5.00.0080.00010.90
5.4.450.0180.03815.19
5.4.440.0150.03715.22
5.4.430.0170.03715.18
5.4.420.0130.03915.06
5.4.410.0150.03015.08
5.4.400.0130.02214.99
5.4.390.0150.02715.14
5.4.380.0120.03015.05
5.4.370.0170.03615.04
5.4.360.0130.03315.02
5.4.350.0130.04015.18
5.4.340.0170.03015.04
5.4.330.0000.00910.90
5.4.320.0250.01715.02
5.4.310.0130.02414.99
5.4.300.0200.03315.01
5.4.290.0120.03115.06
5.4.280.0170.03915.10
5.4.270.0130.03214.87
5.4.260.0150.03615.06
5.4.250.0180.03415.06
5.4.240.0120.03314.96
5.4.230.0120.02915.02
5.4.220.0200.03514.98
5.4.210.0220.03215.05
5.4.200.0220.02715.01
5.4.190.0150.03715.10
5.4.180.0180.03614.87
5.4.170.0160.03615.22
5.4.160.0150.02214.90
5.4.150.0190.01814.86
5.4.140.0160.03313.78
5.4.130.0100.02513.67
5.4.120.0160.01813.59
5.4.110.0150.02813.66
5.4.100.0170.03513.70
5.4.90.0170.03613.75
5.4.80.0170.03413.62
5.4.70.0130.02313.74
5.4.60.0250.02713.72
5.4.50.0150.03413.56
5.4.40.0160.02813.72
5.4.30.0170.03513.71
5.4.20.0220.02713.61
5.4.10.0150.03813.57
5.4.00.0160.03913.40
5.3.290.0120.04013.28
5.3.280.0180.03513.28
5.3.270.0130.02713.28
5.3.260.0150.03013.28
5.3.250.0170.03713.28
5.3.240.0230.01313.28
5.3.230.0160.02113.28
5.3.220.0120.02113.28
5.3.210.0120.02313.28
5.3.200.0180.02613.28
5.3.190.0200.03713.28
5.3.180.0130.02613.28
5.3.170.0100.02813.28
5.3.160.0130.02613.28
5.3.150.0180.03513.28
5.3.140.0130.03013.28
5.3.130.0150.02313.28
5.3.120.0170.02613.28
5.3.110.0170.03413.28
5.3.100.0180.02313.28
5.3.90.0200.03213.28
5.3.80.0120.03513.28
5.3.70.0160.03113.28
5.3.60.0120.02413.28
5.3.50.0140.02313.28
5.3.40.0150.03213.28
5.3.30.0150.04013.28
5.3.20.0200.02813.28
5.3.10.0150.03813.28
5.3.00.0180.03713.28
5.2.170.0100.03413.28
5.2.160.0100.02713.28
5.2.150.0150.01313.28
5.2.140.0100.03213.28
5.2.130.0120.03413.28
5.2.120.0110.03313.28
5.2.110.0150.02813.28
5.2.100.0120.03313.28
5.2.90.0200.02513.28
5.2.80.0110.03313.28
5.2.70.0150.03013.28
5.2.60.0100.02413.28
5.2.50.0120.01813.28
5.2.40.0130.03413.28
5.2.30.0140.02213.28
5.2.20.0120.03213.28
5.2.10.0150.02113.28
5.2.00.0150.03013.28
5.1.60.0120.02913.28
5.1.50.0120.01513.28
5.1.40.0150.02313.28
5.1.30.0120.02213.28
5.1.20.0100.03113.28
5.1.10.0120.02813.28
5.1.00.0100.02813.28
5.0.50.0090.01113.28
5.0.40.0080.02013.28
5.0.30.0050.03513.28
5.0.20.0080.02313.28
5.0.10.0080.02313.28
5.0.00.0070.02813.28
4.4.90.0060.01713.28
4.4.80.0030.01113.28
4.4.70.0050.01213.28
4.4.60.0080.00813.28
4.4.50.0050.02113.28
4.4.40.0070.01713.28
4.4.30.0070.01013.28
4.4.20.0050.01713.28
4.4.10.0050.01213.28
4.4.00.0060.02513.28
4.3.110.0070.01713.28
4.3.100.0050.01513.28
4.3.90.0030.01413.28
4.3.80.0070.02513.28
4.3.70.0070.01313.28
4.3.60.0050.01513.28
4.3.50.0080.01013.28
4.3.40.0070.02713.28
4.3.30.0030.01813.28
4.3.20.0020.01613.28
4.3.10.0020.02213.28
4.3.00.0050.01013.28

preferences:
54.97 ms | 400 KiB | 5 Q