3v4l.org

run code in 300+ PHP versions simultaneously
<?php function bytesToSize($bytes, $precision = 2) { $symbols = array('B', 'Kb', 'Mb', 'Gb', 'Tb', 'Pb', 'Eb', 'Zb', 'Yb'); $exp = (int)floor(log($bytes) / log(1024)); return sprintf('%.'. $precision .'f '. $symbols[$exp], $bytes / pow(1024, floor($exp))); } function mem() { return bytesToSize(memory_get_usage(true)); } function test($msg, $test) { $t = microtime(true); $test($msg); echo $msg .': <b>'. sprintf('%.6f', microtime(true) - $t) .'</b>'. PHP_EOL; } $array = range(0, 3000000); test('foreach', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; foreach ($array as $v) { $b = $v; } echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); test('foreach ref', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; foreach ($array as &$v) { $b = $v; } unset($v); echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); test('for', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; $so = count($array); for ($i = 0; $i < $so; ++$i) { $b = $array[$i]; } echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); test('while each -> list', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; while (list($k, $v) = each($array)) { $b =$v; } echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); echo 'Memory peak: ' . round(memory_get_peak_usage() / 1048576, 3) .PHP_EOL;

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)
7.4.00.0120.00314.82
7.3.120.0100.00714.58
7.3.110.0070.00714.66
7.3.100.0120.00614.71
7.3.90.0030.00915.03
7.3.80.0070.00614.77
7.3.70.0090.00314.55
7.3.60.0070.00714.66
7.3.50.0090.00614.80
7.3.40.0040.01114.77
7.3.30.0060.00314.79
7.3.20.0070.00716.52
7.3.10.0090.00616.44
7.3.00.0070.00316.59
7.2.250.0090.00615.07
7.2.240.0070.01414.80
7.2.230.0060.00915.00
7.2.220.0040.00414.86
7.2.210.0030.00614.64
7.2.200.0040.00415.11
7.2.190.0030.00614.73
7.2.180.0090.00614.60
7.2.170.0000.01414.91
7.2.160.0070.00314.94
7.2.150.0070.00716.75
7.2.140.0070.01016.80
7.2.130.0000.01316.60
7.2.120.0030.00516.41
7.2.110.0100.00316.62
7.2.100.0060.00316.53
7.2.90.0040.01416.39
7.2.80.0030.00916.77
7.2.70.0110.00316.69
7.2.60.0060.00616.64
7.2.50.0030.01016.57
7.2.40.0090.00316.79
7.2.30.0070.00416.89
7.2.20.0030.00916.62
7.2.10.0030.01016.75
7.2.00.0050.00518.00
7.1.330.0070.01115.60
7.1.320.0030.01315.81
7.1.310.0080.00015.68
7.1.300.0060.00615.82
7.1.290.0000.01215.76
7.1.280.0040.00815.65
7.1.270.0070.01015.62
7.1.260.0030.00815.84
7.1.250.0070.00715.67
7.1.240.0030.01015.70
7.1.230.0070.00715.70
7.1.220.0100.00315.53
7.1.210.0000.01715.43
7.1.200.0030.00815.61
7.1.190.0060.00315.58
7.1.180.0100.00315.81
7.1.170.0110.00615.49
7.1.160.0060.00915.61
7.1.150.0030.01015.58
7.1.140.0000.00915.70
7.1.130.0000.01115.74
7.1.120.0040.00715.63
7.1.110.0000.00915.45
7.1.100.0060.00915.68
7.1.90.0100.00315.66
7.1.80.0070.01015.44
7.1.70.0020.00616.06
7.1.60.0070.00917.54
7.1.50.0100.00916.22
7.1.40.0090.00315.75
7.1.30.0070.00315.59
7.1.20.0030.01015.76
7.1.10.0030.01115.66
7.1.00.0020.03219.02
7.0.330.0000.01415.22
7.0.320.0000.01315.38
7.0.310.0000.01015.42
7.0.300.0120.00415.23
7.0.290.0060.00315.36
7.0.280.0070.00715.34
7.0.270.0030.01015.25
7.0.260.0050.00315.41
7.0.250.0040.00715.02
7.0.240.0030.01315.21
7.0.230.0060.01015.17
7.0.220.0040.01115.24
7.0.210.0000.01415.28
7.0.200.0050.00416.04
7.0.190.0130.00015.34
7.0.180.0070.00715.30
7.0.170.0080.00815.25
7.0.160.0060.00315.41
7.0.150.0040.00815.26
7.0.140.0040.04218.68
7.0.130.0120.00015.03
7.0.120.0040.03818.65
7.0.110.0000.01015.31
7.0.100.0030.00915.43
7.0.90.0060.00615.36
7.0.80.0040.00815.34
7.0.70.0030.00715.42
7.0.60.0100.04317.59
7.0.50.0030.02616.61
7.0.40.0050.04816.63
7.0.30.0150.02016.57
7.0.20.0150.02916.57
7.0.10.0100.04716.75
7.0.00.0030.04116.71
5.6.400.0290.04678.86
5.6.390.0470.03079.07
5.6.380.0330.04679.23
5.6.370.0240.05178.94
5.6.360.0390.03979.03
5.6.350.0270.05078.81
5.6.340.0260.05178.79
5.6.330.0310.04178.90
5.6.320.0300.05078.90
5.6.310.0370.04178.84
5.6.300.0330.06078.89
5.6.290.0310.04778.75
5.6.280.0310.08182.31
5.6.270.0230.06078.73
5.6.260.0460.04678.88
5.6.250.0360.04679.15
5.6.240.0360.04978.47
5.6.230.0300.04778.80
5.6.220.0330.05378.75
5.6.210.0270.07281.92
5.6.200.0330.08280.86
5.6.190.0220.07281.85
5.6.180.0300.07081.98
5.6.170.0450.05281.86
5.6.160.0180.06581.94
5.6.150.0220.06780.65
5.6.140.0300.06080.71
5.6.130.0410.05380.89
5.6.120.0480.05582.23
5.6.110.0220.06582.20
5.6.100.0460.07382.29
5.6.90.0340.07682.07
5.6.80.0410.07081.92
5.6.70.2340.05581.87
5.6.60.0340.05478.91
5.6.50.0270.05778.95
5.6.40.0490.03078.64
5.6.30.0400.04078.40
5.6.20.0430.06278.75
5.6.10.0240.05578.77
5.6.00.0360.05278.52
5.5.380.0420.06578.70
5.5.370.0330.05778.78
5.5.360.0460.03378.83
5.5.350.0470.06881.83
5.5.340.0270.07180.55
5.5.330.0300.06081.93
5.5.320.0520.07481.70
5.5.310.0320.05981.86
5.5.300.0350.08280.66
5.5.290.0350.07080.46
5.5.280.0450.07582.21
5.5.270.0330.08482.01
5.5.260.0320.06881.91
5.5.250.0370.08781.94
5.5.240.0310.08881.69
5.5.230.0460.03978.72
5.5.220.0460.04978.81
5.5.210.0300.05079.00
5.5.200.0300.05378.86
5.5.190.0330.05078.89
5.5.180.0410.04878.74
5.5.170.0410.03578.79
5.5.160.0370.04478.79
5.5.150.0270.07078.23
5.5.140.0270.05778.55
5.5.130.0400.03778.28
5.5.120.0350.04578.72
5.5.110.0440.05878.52
5.5.100.0300.06378.81
5.5.90.0330.04078.79
5.5.80.0260.05278.81
5.5.70.0330.04378.79
5.5.60.0440.03178.28
5.5.50.0300.04478.50
5.5.40.0410.04178.64
5.5.30.0170.06078.99
5.5.20.0470.04478.86
5.5.10.0310.04878.65
5.5.00.0310.04778.75
5.4.450.0230.07079.90
5.4.440.0360.06679.95
5.4.430.0330.09079.66
5.4.420.0360.07379.55
5.4.410.0350.07179.76
5.4.400.0250.05579.43
5.4.390.0300.07479.62
5.4.380.0240.07979.49
5.4.370.0320.06079.44
5.4.360.0330.06279.59
5.4.350.0300.06679.61
5.4.340.0340.06279.31
5.4.330.0400.04375.62
5.4.320.0300.08379.62
5.4.310.0370.08879.42
5.4.300.0150.07579.51
5.4.290.0310.08579.51
5.4.280.0380.05879.58
5.4.270.0280.08379.50
5.4.260.0240.06079.63
5.4.250.0370.07079.44
5.4.240.0300.05479.49
5.4.230.0310.06179.38
5.4.220.0320.06279.39
5.4.210.0270.07379.63
5.4.200.0320.07279.43
5.4.190.0300.05879.40
5.4.180.0280.06879.35
5.4.170.0230.06079.61
5.4.160.0280.07379.55
5.4.150.0450.06279.38
5.4.140.0270.07078.18
5.4.130.0350.06478.25
5.4.120.0300.05378.31
5.4.110.0360.05978.33
5.4.100.0350.08578.21
5.4.90.0210.07478.35
5.4.80.0370.07878.08
5.4.70.0180.09378.24
5.4.60.0280.05778.27
5.4.50.0300.06578.14
5.4.40.0330.06178.13
5.4.30.0330.09078.21
5.4.20.0230.07378.11
5.4.10.0400.07378.29
5.4.00.0330.07877.85
5.3.290.0200.07175.65
5.3.280.0250.07475.71
5.3.270.0380.07175.75
5.3.260.0350.07875.61
5.3.250.0330.09375.64
5.3.240.0410.06175.56
5.3.230.0310.07875.45
5.3.220.0310.05175.62
5.3.210.0280.07275.53
5.3.200.0320.08375.54
5.3.190.0400.08075.66
5.3.180.0230.07075.72
5.3.170.0230.06775.70
5.3.160.0320.08075.74
5.3.150.0360.06375.69
5.3.140.0380.06375.64
5.3.130.0370.08775.54
5.3.120.0250.07075.70
5.3.110.0280.07675.75
5.3.100.0380.06475.43
5.3.90.0290.08475.36
5.3.80.0350.08075.19
5.3.70.0220.08575.11
5.3.60.0350.08875.08
5.3.50.0280.09275.22
5.3.40.0320.07375.09
5.3.30.0340.07675.16
5.3.20.0350.08275.05
5.3.10.0450.06874.81
5.3.00.0310.07974.91
5.2.170.0070.04711.21
5.2.160.0100.05711.31
5.2.150.0030.03711.07
5.2.140.0100.02311.04
5.2.130.0130.05311.26
5.2.120.0130.04311.16
5.2.110.0030.04711.05
5.2.100.0030.06011.26
5.2.90.0030.04011.14
5.2.80.0070.06311.05
5.2.70.0000.04311.06
5.2.60.0000.03711.02
5.2.50.0000.03711.00
5.2.40.0070.02711.04
5.2.30.0100.05310.94
5.2.20.0100.05711.00
5.2.10.0070.06010.86
5.2.00.0100.05710.66
5.1.60.0100.05010.02
5.1.50.0100.0509.97
5.1.40.0030.0379.89
5.1.30.0030.06010.37
5.1.20.0070.03010.43
5.1.10.0030.0279.98
5.1.00.0030.02310.10
5.0.50.0030.0508.66
5.0.40.0070.0408.66
5.0.30.0000.0578.66
5.0.20.0000.0238.66
5.0.10.0000.0508.66
5.0.00.0000.0708.66
4.4.90.0000.0238.66
4.4.80.0000.0378.66
4.4.70.0030.0138.66
4.4.60.0000.0408.66
4.4.50.0000.0178.66
4.4.40.0000.0378.66
4.4.30.0030.0238.66
4.4.20.0130.0108.66
4.4.10.0000.0278.66
4.4.00.0030.0578.66
4.3.110.0000.0338.66
4.3.100.0030.0178.66
4.3.90.0000.0178.66
4.3.80.0000.0408.66
4.3.70.0000.0278.66
4.3.60.0070.0178.66
4.3.50.0000.0378.66
4.3.40.0070.0308.66
4.3.30.0030.0278.66
4.3.20.0030.0378.66
4.3.10.0000.0408.66
4.3.00.0030.0338.66

preferences:
33.64 ms | 400 KiB | 5 Q