3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo $p = implode('', range('a', 'z')); echo PHP_EOL; echo $c = substr($p, 13); echo PHP_EOL; $times = 1000 * 10 * 10; $test = function() use($p, $c) { return substr($p, 0, strlen($c)) == $c; }; $test1 = function() use ($p, $c) { return strncmp($p, $c, strlen($c)); }; $print = function($closure, $s) use ($times) { for ($i =0; $i < $times; $i++) $closure(); echo printf('Runns: %01.2f', microtime(1) - $s); echo PHP_EOL; }; $print($test, microtime(1)); $print($test1, microtime(1));

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)
7.4.00.0030.05314.81
7.3.120.0100.04615.12
7.3.110.0100.04515.18
7.3.100.0060.03514.82
7.3.90.0030.03514.73
7.3.80.0120.02514.76
7.3.70.0030.03215.02
7.3.60.0070.02714.75
7.3.50.0030.03414.98
7.3.40.0070.02814.66
7.3.30.0030.04814.68
7.3.20.0030.03216.69
7.3.10.0030.03116.72
7.3.00.0130.02216.81
7.2.250.0100.03515.20
7.2.240.0030.05615.20
7.2.230.0070.03615.16
7.2.220.0070.03814.95
7.2.210.0000.03714.86
7.2.200.0060.03215.01
7.2.190.0030.03614.98
7.2.180.0000.04115.11
7.2.170.0030.03915.12
7.2.160.0060.05114.82
7.2.150.0070.04017.00
7.2.140.0100.02916.70
7.2.130.0060.03216.84
7.2.120.0000.04217.04
7.2.110.0130.03217.05
7.2.100.0030.03716.84
7.2.90.0060.02916.81
7.2.80.0030.04216.83
7.2.70.0100.03316.68
7.2.60.0060.03117.10
7.2.50.0060.04116.86
7.2.40.0000.03617.04
7.2.30.0030.03917.03
7.2.20.0070.04417.02
7.2.10.0030.03216.76
7.2.00.0030.03718.01
7.1.330.0200.06615.71
7.1.320.0030.06915.61
7.1.310.0030.06815.59
7.1.300.0030.06115.86
7.1.290.0030.06515.77
7.1.280.0030.06715.68
7.1.270.0070.06315.63
7.1.260.0100.06015.83
7.1.250.0070.06216.00
7.1.240.0100.05915.91
7.1.230.0030.06315.71
7.1.220.0030.06715.64
7.1.210.0030.06315.66
7.1.200.0060.06915.80
7.1.190.0030.06616.02
7.1.180.0070.06515.77
7.1.170.0030.06115.70
7.1.160.0030.06315.83
7.1.150.0070.06715.73
7.1.140.0030.07915.78
7.1.130.0000.07615.93
7.1.120.0160.05615.97
7.1.110.0130.06315.84
7.1.100.0030.08615.90
7.1.90.0070.06515.91
7.1.80.0000.06615.71
7.1.70.0030.06216.61
7.1.60.0130.05217.49
7.1.50.0020.06216.25
7.1.40.0100.08315.52
7.1.30.0000.06815.63
7.1.20.0060.06815.82
7.1.10.0030.06415.81
7.1.00.0080.11718.89
7.0.330.0030.07415.29
7.0.320.0030.06415.47
7.0.310.0070.06515.25
7.0.300.0070.06615.40
7.0.290.0100.06215.39
7.0.280.0030.09815.30
7.0.270.0030.07515.16
7.0.260.0030.09415.60
7.0.250.0030.10515.52
7.0.240.0030.09415.42
7.0.230.0070.06715.64
7.0.220.0030.07315.36
7.0.210.0030.07015.36
7.0.200.0070.05315.78
7.0.190.0030.09515.16
7.0.180.0030.07315.46
7.0.170.0030.06915.38
7.0.160.0070.06515.17
7.0.150.0070.07315.33
7.0.140.0000.10018.82
7.0.130.0030.07415.53
7.0.120.0060.06815.52
7.0.110.0000.07215.54
7.0.100.0020.08417.51
7.0.90.0020.07217.71
7.0.80.0020.08917.69
7.0.70.0050.06917.75
7.0.60.0100.07417.76
7.0.50.0050.10018.02
7.0.40.0000.07816.82
7.0.30.0050.09416.75
7.0.20.0070.09216.87
7.0.10.0100.08716.74
7.0.00.0070.08016.81
5.6.400.0030.14014.54
5.6.390.0070.14013.97
5.6.380.0030.14814.50
5.6.370.0070.14014.54
5.6.360.0070.13014.20
5.6.350.0030.15314.47
5.6.340.0030.13814.54
5.6.330.0030.13614.29
5.6.320.0030.15314.50
5.6.310.0000.14414.18
5.6.300.0030.14114.57
5.6.290.0030.16414.63
5.6.280.0030.16617.65
5.6.270.0070.17514.05
5.6.260.0100.16314.38
5.6.250.0120.13717.58
5.6.240.0050.12817.45
5.6.230.0030.13217.47
5.6.220.0050.12117.50
5.6.210.0030.13517.61
5.6.200.0080.16817.71
5.6.190.0080.16917.59
5.6.180.0050.17317.61
5.6.170.0030.16817.73
5.6.160.0070.14517.54
5.6.150.0070.15717.52
5.6.140.0070.16517.58
5.6.130.0070.13717.66
5.6.120.0070.15117.69
5.6.110.0050.15817.79
5.6.100.0050.18017.73
5.6.90.0080.16917.67
5.6.80.0120.17317.42
5.6.70.0080.15817.39
5.6.60.0070.16817.28
5.6.50.0030.14417.33
5.6.40.0020.17017.34
5.6.30.0070.15417.35
5.6.20.0070.14817.37
5.6.10.0050.15517.38
5.6.00.0050.13217.38
5.5.380.0070.12417.39
5.5.370.0000.14117.38
5.5.360.0030.14217.38
5.5.350.0050.12917.40
5.5.340.0080.15617.72
5.5.330.0080.14017.61
5.5.320.0050.15917.50
5.5.310.0100.16217.46
5.5.300.0050.17317.49
5.5.290.0070.15617.70
5.5.280.0050.15717.66
5.5.270.0070.12517.61
5.5.260.0020.14617.59
5.5.250.0070.15817.58
5.5.240.0030.15217.25
5.5.230.0050.17617.35
5.5.220.0020.13517.26
5.5.210.0050.15117.27
5.5.200.0020.13017.15
5.5.190.0030.14717.25
5.5.180.0070.16117.28
5.5.170.0030.16914.11
5.5.160.0100.16017.34
5.5.150.0070.14717.16
5.5.140.0070.15817.12
5.5.130.0050.17617.19
5.5.120.0080.16817.05
5.5.110.0050.17017.26
5.5.100.0100.12917.27
5.5.90.0100.14017.21
5.5.80.0080.16817.27
5.5.70.0030.16417.10
5.5.60.0030.16117.17
5.5.50.0070.17817.20
5.5.40.0120.15217.22
5.5.30.0070.14317.22
5.5.20.0130.13917.12
5.5.10.0070.13917.21
5.5.00.0030.13517.18
5.4.450.0050.16216.03
5.4.440.0070.13816.03
5.4.430.0070.15616.03
5.4.420.0050.16816.01
5.4.410.0050.13315.80
5.4.400.0020.18715.86
5.4.390.0020.13715.89
5.4.380.0080.14415.88
5.4.370.0000.16615.89
5.4.360.0020.15615.80
5.4.350.0050.16115.73
5.4.340.0070.12915.76
5.4.330.0030.15312.57
5.4.320.0080.12815.71
5.4.310.0030.16615.71
5.4.300.0020.16315.73
5.4.290.0080.18115.72
5.4.280.0030.13715.80
5.4.270.0020.15815.81
5.4.260.0050.15415.83
5.4.250.0050.14215.80
5.4.240.0030.16115.80
5.4.230.0000.15115.72
5.4.220.0080.16015.76
5.4.210.0050.15315.83
5.4.200.0020.15415.73
5.4.190.0070.14715.73
5.4.180.0020.17615.80
5.4.170.0020.15515.84
5.4.160.0080.16815.75
5.4.150.0020.12915.80
5.4.140.0050.16614.53
5.4.130.0020.17314.52
5.4.120.0080.15014.53
5.4.110.0020.16514.52
5.4.100.0030.15214.53
5.4.90.0070.17514.48
5.4.80.0080.15414.48
5.4.70.0050.14214.51
5.4.60.0030.15014.47
5.4.50.0050.14714.53
5.4.40.0050.15214.54
5.4.30.0070.15114.48
5.4.20.0050.17114.49
5.4.10.0070.14414.41
5.4.00.0070.14514.21
5.3.290.0050.17713.63
5.3.280.0050.17213.55
5.3.270.0020.14913.61
5.3.260.0020.14813.66
5.3.250.0020.17813.63
5.3.240.0000.19613.59
5.3.230.0020.15013.63
5.3.220.0070.19313.60
5.3.210.0000.16913.59
5.3.200.0030.16313.63
5.3.190.0020.16113.58
5.3.180.0030.20413.54
5.3.170.0030.15513.60
5.3.160.0020.19313.63
5.3.150.0030.16913.54
5.3.140.0050.16713.61
5.3.130.0070.17913.59
5.3.120.0100.16813.55
5.3.110.0050.17613.60
5.3.100.0030.19413.32
5.3.90.0020.20013.34
5.3.80.0050.18113.26
5.3.70.0030.18713.26
5.3.60.0020.19313.34
5.3.50.0030.19813.30
5.3.40.0070.17313.29
5.3.30.0020.19813.29
5.3.20.0020.17913.14
5.3.10.0030.19613.14
5.3.00.0020.19613.12
5.2.170.0030.04012.10
5.2.160.0070.06012.10
5.2.150.0030.06012.10
5.2.140.0000.05012.10
5.2.130.0000.03012.10
5.2.120.0070.06012.10
5.2.110.0000.04312.10
5.2.100.0030.06012.10
5.2.90.0000.06712.10
5.2.80.0170.03712.10
5.2.70.0030.02712.10
5.2.60.0030.03312.10
5.2.50.0070.06312.10
5.2.40.0030.04012.10
5.2.30.0070.04312.10
5.2.20.0070.05012.10
5.2.10.0070.05312.10
5.2.00.0000.06012.10
5.1.60.0030.05712.10
5.1.50.0000.04312.10
5.1.40.0030.04712.10
5.1.30.0000.04312.10
5.1.20.0070.05012.10
5.1.10.0070.04312.10
5.1.00.0000.03712.10
5.0.50.0000.04012.10
5.0.40.0000.02712.10
5.0.30.0000.06712.10
5.0.20.0000.04012.10
5.0.10.0030.03712.10
5.0.00.0000.03312.10
4.4.90.0000.01712.10
4.4.80.0000.02712.10
4.4.70.0000.02312.10
4.4.60.0030.02712.10
4.4.50.0030.01712.10
4.4.40.0000.02712.10
4.4.30.0030.03012.10
4.4.20.0000.01712.10
4.4.10.0070.02712.10
4.4.00.0030.02312.10
4.3.110.0000.04012.10
4.3.100.0030.01712.10
4.3.90.0070.02712.10
4.3.80.0030.03712.10
4.3.70.0030.02312.10
4.3.60.0000.02012.10
4.3.50.0000.01712.10
4.3.40.0030.02012.10
4.3.30.0000.01312.10
4.3.20.0030.02312.10
4.3.10.0000.04012.10
4.3.00.0000.02712.10

preferences:
39.95 ms | 401 KiB | 5 Q