3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string1 = 'aaaaaaaaaaaaaaaaaaaa'; $string2 = 'bbbbbbbbbbbbbbbbbbbb'; $string3 = 'cccccccccccccccccccc'; $string4 = 'dddddddddddddddddddd'; $string5 = 'eeeeeeeeeeeeeeeeeeee'; $results = array(); $time1 = microtime(true); for ($i = 0; $i<1000000; $i++) { $concatTest1 = $string1 . $string2 . $string3 . $string4 . $string5; } unset($i); $time2 = microtime(true); $testDuration1 = $time2 - $time1; $results['Test1'] = $testDuration1; $time3 = microtime(true); for ($i = 0; $i<1000000; $i++) { $concatTest2 = "{$string1}{$string2}{$string3}{$string4}{$string5}"; } unset($i); $time4 = microtime(true); $testDuration2 = $time4 - $time3; $results['Test2'] = $testDuration2; $time5 = microtime(true); for ($i = 0; $i<1000000; $i++) { $concatTest3 = implode('', array( $string1, $string2, $string3, $string4, $string5 )); } unset($i); $time6 = microtime(true); $testDuration3 = $time6 - $time5; $results['Test3'] = $testDuration3; $time7 = microtime(true); for ($i = 0; $i<1000000; $i++) { $concatTest4 = sprintf('%s%s%s%s%s', $string1, $string2, $string3, $string4, $string5 ); } unset($i); $time8 = microtime(true); $testDuration4 = $time8 - $time7; $results['Test4'] = $testDuration4; $finalResults = sort($results); var_dump($results);

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)
7.3.10.0080.79116.56
7.3.00.0060.78416.45
7.2.130.0080.86916.87
7.2.120.0070.85916.60
7.2.110.0070.83316.66
7.2.100.0070.85016.41
7.2.90.0070.82416.81
7.2.80.0100.83416.86
7.2.70.0120.84816.90
7.2.60.0120.80416.70
7.2.50.0060.81616.50
7.2.40.0030.84716.61
7.2.30.0150.82816.72
7.2.20.0080.79716.54
7.2.10.0120.81516.63
7.2.00.0060.69717.58
7.1.250.0101.07915.56
7.1.70.0070.45617.00
7.1.60.0030.51719.17
7.1.50.0100.51516.87
7.1.00.0030.69722.51
7.0.200.0030.47416.88
7.0.140.0070.64322.14
7.0.80.0100.53319.98
7.0.70.0070.53719.87
7.0.60.0000.49319.94
7.0.50.0030.55020.31
7.0.40.0170.53020.05
7.0.30.0070.52720.11
7.0.20.0100.45320.00
7.0.10.0070.53719.93
7.0.00.0070.54019.99
5.6.280.0071.13321.08
5.6.230.0131.02720.72
5.6.220.0070.87320.50
5.6.210.0131.10020.59
5.6.200.0131.09321.12
5.6.190.0071.00720.95
5.6.180.0070.84721.01
5.6.170.0101.04021.02
5.6.160.0131.05720.96
5.6.150.0101.08321.02
5.6.140.0071.04020.93
5.6.130.0030.90721.17
5.6.120.0131.03721.05
5.6.110.0000.83721.02
5.6.100.0030.96721.04
5.6.90.0000.82720.92
5.6.80.0170.90320.39
5.6.70.0730.87720.55
5.6.60.0000.84020.48
5.6.50.0030.81720.49
5.6.40.0101.04320.43
5.6.30.0130.83020.48
5.6.20.0030.82020.48
5.6.10.0101.04720.42
5.6.00.0000.94020.42
5.5.370.0071.08320.45
5.5.360.0031.08720.36
5.5.350.0070.91320.47
5.5.340.0030.91020.74
5.5.330.0201.06020.77
5.5.320.0101.06320.80
5.5.310.0100.87720.91
5.5.300.0071.04020.88
5.5.290.0030.84720.78
5.5.280.0100.85320.78
5.5.270.0071.14020.77
5.5.260.0000.84020.83
5.5.250.0000.94320.58
5.5.240.0031.05020.24
5.5.230.0100.89320.27
5.5.220.0031.03020.02
5.5.210.0071.03720.15
5.5.200.0101.01020.29
5.5.190.0100.86020.09
5.5.180.0031.03720.27
5.5.160.0030.95720.11
5.5.150.0070.94020.09
5.5.140.0071.00020.25
5.5.130.0900.96020.25
5.5.120.0000.89020.23
5.5.110.0101.05720.11
5.5.100.0031.06320.08
5.5.90.0031.06720.13
5.5.80.0000.92020.08
5.5.70.1070.90020.06
5.5.60.0131.11720.15
5.5.50.0031.08020.06
5.5.40.0030.92320.06
5.5.30.0001.02020.14
5.5.20.0071.03020.00
5.5.10.0030.91020.02
5.5.00.0000.99720.07
5.4.450.0100.86719.29
5.4.440.0100.92019.39
5.4.430.0001.03719.11
5.4.420.0000.94319.44
5.4.410.0000.96019.22
5.4.400.0131.07019.03
5.4.390.0131.06319.14
5.4.380.0100.83718.98
5.4.370.0100.82319.13
5.4.360.0131.03319.04
5.4.350.0001.11318.97
5.4.340.0030.93719.06
5.4.320.0101.06019.23
5.4.310.0030.95718.90
5.4.300.0071.04719.09
5.4.290.0000.88019.11
5.4.280.0031.12019.12
5.4.270.0030.88719.02
5.4.260.0071.02319.02
5.4.250.0000.85019.00
5.4.240.0071.03319.09
5.4.230.0030.94019.05
5.4.220.0070.95019.02
5.4.210.0131.07019.13
5.4.200.0070.85718.80
5.4.190.0000.97019.02
5.4.180.0030.85319.02
5.4.170.0030.97018.80
5.4.160.0071.04019.04
5.4.150.0130.87318.94
5.4.140.0030.87016.33
5.4.130.0001.01716.28
5.4.120.0031.09316.28
5.4.110.0001.06316.45
5.4.100.0070.98316.32
5.4.90.0071.06016.26
5.4.80.0031.07016.36
5.4.70.0030.93716.45
5.4.60.0000.87316.28
5.4.50.1370.87016.35
5.4.40.0071.10716.35
5.4.30.0101.01716.27
5.4.20.0071.05016.22
5.4.10.0071.08016.27
5.4.00.0071.10715.80
5.3.290.0071.31014.54
5.3.280.0071.32314.45
5.3.270.0031.12014.48
5.3.260.0031.20714.57
5.3.250.0101.30014.58
5.3.240.0001.06014.63
5.3.230.0071.31314.43
5.3.220.0071.32014.58
5.3.210.0101.29014.53
5.3.200.0071.34014.44
5.3.190.0101.32714.55
5.3.180.0131.26014.54
5.3.170.0031.18714.54
5.3.160.0171.25014.57
5.3.150.0031.21714.54
5.3.140.0071.33014.53
5.3.130.0031.34314.43
5.3.120.0101.33014.56
5.3.110.1201.30314.55
5.3.100.0001.27314.00
5.3.90.0031.32313.94
5.3.80.0071.26714.02
5.3.70.0001.24714.02
5.3.60.0101.23713.77
5.3.50.0071.28713.73
5.3.40.0001.16713.82
5.3.30.0001.28313.79
5.3.20.0071.04013.69
5.3.10.0031.28713.65
5.3.00.0031.08013.65
5.2.170.0031.33011.74
5.2.160.0001.19311.74
5.2.150.0031.30311.74
5.2.140.0031.20011.74
5.2.130.0031.36311.74
5.2.120.0031.39311.74
5.2.110.0071.33311.74
5.2.100.0071.14711.74
5.2.90.0071.36711.74
5.2.80.0031.34011.74
5.2.70.0071.33011.74
5.2.60.0001.32711.74
5.2.50.0031.42711.74
5.2.40.0001.46311.74
5.2.30.0001.20011.74
5.2.20.0031.08711.74
5.2.10.0131.55011.74
5.2.00.0001.28011.74
5.1.60.0071.71011.74
5.1.50.0001.41311.74
5.1.40.0101.67011.74
5.1.30.0031.65311.74
5.1.20.0031.44711.74
5.1.10.0071.62311.74
5.1.00.0001.51711.74
5.0.50.0072.4608.25
5.0.40.0032.4278.16
5.0.30.0102.4538.07
5.0.20.0072.4538.05
5.0.10.0072.4177.98
5.0.00.0132.4278.04
4.4.90.0172.4207.90
4.4.80.0132.4177.90
4.4.70.0072.4237.90
4.4.60.0132.4277.90
4.4.50.0172.4377.90
4.4.40.0072.3907.90
4.4.30.0132.4507.90
4.4.20.0102.4537.90
4.4.10.0102.4537.90
4.4.00.0132.4577.90
4.3.110.0072.4577.90
4.3.100.0102.4707.90
4.3.90.0132.4237.90
4.3.80.0072.4577.90
4.3.70.0272.3877.90
4.3.60.0002.4437.90
4.3.50.0202.4207.90
4.3.40.0202.4337.90
4.3.30.0002.4737.90
4.3.20.0102.4437.90
4.3.10.0172.4237.90
4.3.00.0072.4377.90

preferences:
45.56 ms | 401 KiB | 5 Q