3v4l.org

run code in 300+ PHP versions simultaneously
<?php function by_return($dummy=null) { $dummy = str_repeat("1",10 * 1024 * 1024); return $dummy; } function by_reference(&$dummy) { $dummy = null; $dummy = str_repeat("1",10 * 1024 * 1024); } echo memory_get_usage()."/".memory_get_peak_usage()."\n"; //1 always returns: 105493696/105496656 //$nagid = by_return(); echo memory_get_usage()."/".memory_get_peak_usage()."\n"; unset($nagid); //2 always returns: 105493696/210354184 even if we comment 1st part by_reference($dummy); echo memory_get_usage()."/".memory_get_peak_usage()."\n"; unset($dummy);

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)
7.3.00.0200.01326.31
7.2.130.0310.00326.59
7.2.120.0210.01026.40
7.2.110.0130.01326.67
7.2.100.0040.01126.72
7.2.90.0130.00326.59
7.2.80.0090.00626.64
7.2.70.0000.01326.82
7.2.60.0040.01126.70
7.2.50.0080.00426.81
7.2.40.0220.00026.88
7.2.30.0040.00726.84
7.2.20.0070.00726.74
7.2.10.0120.00026.71
7.2.00.0040.01127.80
7.1.250.0560.00725.65
7.1.240.0100.01325.87
7.1.230.0140.01125.88
7.1.220.0070.01425.63
7.1.210.0110.00425.78
7.1.200.0150.00325.49
7.1.190.0000.01725.62
7.1.180.0100.00325.75
7.1.170.0030.01225.58
7.1.160.0130.00025.75
7.1.150.0000.01425.64
7.1.140.0040.00825.45
7.1.130.0080.00425.53
7.1.120.0060.00625.68
7.1.110.0040.00725.55
7.1.100.0080.00425.95
7.1.90.0070.01025.76
7.1.80.0060.00625.57
7.1.70.0080.00726.43
7.1.60.0100.00526.23
7.1.50.0110.01126.36
7.1.40.0070.00725.82
7.1.30.0030.00725.69
7.1.20.0120.00625.37
7.1.10.0030.01425.87
7.1.00.0030.02328.90
7.0.330.0390.00325.42
7.0.320.0120.00625.41
7.0.310.0060.00625.23
7.0.300.0040.01125.54
7.0.290.0070.00325.27
7.0.280.0060.00625.46
7.0.270.0120.00325.58
7.0.260.0000.01125.18
7.0.250.0060.01025.66
7.0.240.0080.00825.20
7.0.230.0040.00825.40
7.0.220.0000.01525.56
7.0.210.0000.01125.13
7.0.200.0070.00326.03
7.0.190.0060.00625.37
7.0.180.0100.00025.56
7.0.170.0030.01225.26
7.0.160.0040.01125.33
7.0.150.0030.01025.57
7.0.140.0100.03628.61
7.0.130.0030.01425.39
7.0.120.0030.01025.16
7.0.110.0060.00325.57
7.0.100.0000.01325.30
7.0.90.0040.00725.45
7.0.80.0060.00625.39
7.0.70.0050.05328.46
7.0.60.0030.03428.56
7.0.50.0050.04428.84
7.0.40.0100.04126.77
7.0.30.0040.04826.73
7.0.20.0050.05026.86
7.0.10.0100.03926.72
7.0.00.0080.04026.56
5.6.380.0190.00733.91
5.6.370.0150.00634.47
5.6.360.0140.00734.04
5.6.350.0160.00734.35
5.6.340.0140.00734.44
5.6.330.0210.00334.01
5.6.320.0140.01034.49
5.6.310.0100.01334.37
5.6.300.0210.00434.08
5.6.290.0100.01434.29
5.6.280.0100.04237.83
5.6.270.0140.00734.45
5.6.260.0180.00734.34
5.6.250.0070.01433.98
5.6.240.0100.01434.10
5.6.230.0170.00733.86
5.6.220.0170.03337.36
5.6.210.0090.04537.30
5.6.200.0130.04537.51
5.6.190.0120.04837.59
5.6.180.0090.05037.36
5.6.170.0130.04737.58
5.6.160.0170.04037.46
5.6.150.0130.04537.45
5.6.140.0120.04537.49
5.6.130.0080.05037.37
5.6.120.0130.02737.41
5.6.110.0170.04037.79
5.6.100.0070.05437.68
5.6.90.0120.04037.46
5.6.80.0140.04237.18
5.6.70.0100.05037.18
5.6.60.0130.04536.94
5.6.50.0110.04337.14
5.6.40.0110.04837.19
5.6.30.0130.04337.11
5.6.20.0110.04637.22
5.6.10.0130.02837.10
5.6.00.0140.02237.27
5.5.380.0210.00031.23
5.5.370.0160.00630.71
5.5.360.0100.04035.55
5.5.350.0130.04335.53
5.5.340.0120.03735.73
5.5.330.0120.04436.01
5.5.320.0130.03835.67
5.5.310.0080.04835.75
5.5.300.0150.03335.81
5.5.290.0080.03835.90
5.5.280.0140.03035.90
5.5.270.0070.04735.94
5.5.260.0080.05036.08
5.5.250.0120.04735.78
5.5.240.0170.04035.39
5.5.230.0130.04135.41
5.5.220.0070.05135.36
5.5.210.0110.04335.42
5.5.200.0180.03235.41
5.5.190.0150.03535.55
5.5.180.0090.04835.46
5.5.170.0110.01131.06
5.5.160.0030.03735.53
5.5.150.0140.03235.46
5.5.140.0060.03835.61
5.5.130.0080.04635.37
5.5.120.0090.04935.36
5.5.110.0080.04535.46
5.5.100.0050.05135.36
5.5.90.0110.04035.47
5.5.80.0100.04235.53
5.5.70.0140.03535.39
5.5.60.0050.05235.46
5.5.50.0100.04735.40
5.5.40.0120.04235.54
5.5.30.0100.02535.32
5.5.20.0100.02235.35
5.5.10.0090.04235.33
5.5.00.0140.04235.48
5.4.450.0100.03335.21
5.4.440.0100.04835.09
5.4.430.0110.04535.12
5.4.420.0100.04835.11
5.4.410.0050.04335.04
5.4.400.0110.04034.83
5.4.390.0140.02734.67
5.4.380.0160.03734.78
5.4.370.0100.03835.05
5.4.360.0070.03534.68
5.4.350.0080.03834.75
5.4.340.0100.04034.64
5.4.330.0100.01030.65
5.4.320.0150.03034.73
5.4.310.0120.04034.76
5.4.300.0140.03434.87
5.4.290.0080.04534.86
5.4.280.0050.03734.91
5.4.270.0150.04034.73
5.4.260.0120.04234.91
5.4.250.0150.04234.91
5.4.240.0070.05034.92
5.4.230.0130.03534.93
5.4.220.0160.03734.96
5.4.210.0150.03234.85
5.4.200.0110.03034.95
5.4.190.0170.04034.85
5.4.180.0100.02534.93
5.4.170.0090.02834.73
5.4.160.0100.03734.85
5.4.150.0080.03234.77
5.4.140.0090.03933.41
5.4.130.0130.03733.45
5.4.120.0120.04233.48
5.4.110.0100.03833.45
5.4.100.0130.03033.45
5.4.90.0080.04833.60
5.4.80.0120.03833.65
5.4.70.0050.04533.56
5.4.60.0130.03033.57
5.4.50.0110.03333.59
5.4.40.0100.04033.66
5.4.30.0170.03533.43
5.4.20.0110.03833.46
5.4.10.0130.04333.63
5.4.00.0120.02333.02
5.3.290.0090.03432.39
5.3.280.0170.03232.24
5.3.270.0100.03232.21
5.3.260.0120.04332.26
5.3.250.0120.02532.06
5.3.240.0120.04232.14
5.3.230.0080.04232.28
5.3.220.0080.02832.14
5.3.210.0140.04231.95
5.3.200.0120.04232.16
5.3.190.0060.03632.16
5.3.180.0090.04732.30
5.3.170.0090.03032.11
5.3.160.0150.02532.23
5.3.150.0150.03532.08
5.3.140.0130.03532.15
5.3.130.0150.03332.22
5.3.120.0100.04332.25
5.3.110.0170.03832.23
5.3.100.0050.03731.92
5.3.90.0110.03132.04
5.3.80.0100.03231.92
5.3.70.0100.04331.90
5.3.60.0140.02732.02
5.3.50.0090.03431.84
5.3.40.0080.04331.79
5.3.30.0130.02531.88
5.3.20.0070.03531.58
5.3.10.0120.02731.64
5.3.00.0080.02831.66
5.2.170.0130.03529.80
5.2.160.0110.03529.89
5.2.150.0110.03229.75
5.2.140.0110.02029.86
5.2.130.0110.03330.01
5.2.120.0150.02729.93
5.2.110.0090.02029.92
5.2.100.0100.04029.83
5.2.90.0090.03729.72
5.2.80.0140.02829.61
5.2.70.0130.02029.79
5.2.60.0120.03729.68
5.2.50.0090.03029.73
5.2.40.0160.02229.83
5.2.30.0080.03329.73
5.2.20.0100.02229.77
5.2.10.0090.03929.60
5.2.00.0030.03213.15
5.1.60.0020.03213.15
5.1.50.0020.02813.15
5.1.40.0020.03013.15
5.1.30.0050.03013.15
5.1.20.0020.02713.15
5.1.10.0020.03013.15
5.1.00.0050.02713.15
5.0.50.0050.02013.15
5.0.40.0050.02113.15
5.0.30.0030.03413.15
5.0.20.0040.02513.15
5.0.10.0020.02113.15
5.0.00.0060.02813.15
4.4.90.0030.01513.15
4.4.80.0030.01813.15
4.4.70.0020.01813.15
4.4.60.0050.01613.15
4.4.50.0010.01813.15
4.4.40.0020.02713.15
4.4.30.0020.01713.15
4.4.20.0020.01813.15
4.4.10.0010.02113.15
4.4.00.0030.02813.15
4.3.110.0050.01413.15
4.3.100.0050.01613.15
4.3.90.0020.01913.15
4.3.80.0040.02313.15
4.3.70.0000.02113.15
4.3.60.0050.01513.15
4.3.50.0020.01313.15
4.3.40.0010.03113.15
4.3.30.0040.01613.15
4.3.20.0030.01413.15
4.3.10.0020.01513.15
4.3.00.0030.01113.15

preferences:
39.15 ms | 400 KiB | 5 Q