3v4l.org

run code in 300+ PHP versions simultaneously
<?php function by_return($dummy=null) { $dummy = str_repeat("1",100 * 1024 * 1024); return $dummy; } function by_reference(&$dummy) { $dummy = null; $dummy = str_repeat("1",100 * 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)
7.4.00.0120.00615.13
7.3.120.0100.00814.79
7.3.110.0050.01214.92
7.3.100.0070.00814.78
7.3.90.0030.00914.90
7.3.80.0050.00614.84
7.3.70.0040.01114.75
7.3.60.0000.00914.79
7.3.50.0020.01214.88
7.3.40.0020.01114.50
7.3.30.0080.00614.83
7.3.20.0070.00716.57
7.3.10.0070.00616.36
7.3.00.0080.00616.43
7.2.250.0070.01114.97
7.2.240.0060.01214.96
7.2.230.0040.01014.91
7.2.220.0080.00614.76
7.2.210.0060.00615.16
7.2.200.0020.01114.75
7.2.190.0070.00914.98
7.2.180.0080.00814.85
7.2.170.0050.00914.85
7.2.160.0110.00314.83
7.2.150.0100.00316.72
7.2.140.0030.00916.71
7.2.130.0090.00616.57
7.2.120.0060.00716.68
7.2.110.0010.01216.52
7.2.100.0040.00816.75
7.2.90.0050.00916.65
7.2.80.0040.01216.64
7.2.70.0090.00716.52
7.2.60.0090.00416.59
7.2.50.0060.01016.60
7.2.40.0050.00716.71
7.2.30.0090.00316.79
7.2.20.0070.00616.73
7.2.10.0050.01016.57
7.2.00.0040.00916.79
7.1.330.0030.01015.68
7.1.320.0040.01115.69
7.1.310.0070.00715.68
7.1.300.0030.00615.65
7.1.290.0030.01315.63
7.1.280.0020.01015.64
7.1.270.0050.00915.63
7.1.260.0050.00515.50
7.1.250.0040.00815.39
7.1.240.0070.00215.56
7.1.230.0070.00615.56
7.1.220.0080.00315.74
7.1.210.0090.00615.68
7.1.200.0020.00815.50
7.1.190.0030.00815.62
7.1.180.0060.00515.80
7.1.170.0030.01115.79
7.1.160.0000.01115.43
7.1.150.0030.00815.56
7.1.140.0060.00615.56
7.1.130.0020.01015.59
7.1.120.0080.00515.62
7.1.110.0040.00715.66
7.1.100.0050.00815.63
7.1.90.0050.00815.63
7.1.80.0050.00815.72
7.1.70.0060.00416.21
7.1.60.0080.00817.01
7.1.50.0050.01016.13
7.1.40.0050.00715.77
7.1.30.0050.00515.73
7.1.20.0090.00315.70
7.1.10.0090.00715.80
7.1.00.0010.03317.92
7.0.330.0050.01015.26
7.0.320.0080.00215.07
7.0.310.0060.00715.11
7.0.300.0070.00914.96
7.0.290.0030.01015.26
7.0.280.0040.00915.18
7.0.270.0070.00715.29
7.0.260.0070.00815.20
7.0.250.0070.00615.22
7.0.240.0050.00515.24
7.0.230.0020.01315.23
7.0.220.0130.00115.21
7.0.210.0050.00515.24
7.0.200.0020.01115.75
7.0.190.0030.00815.29
7.0.180.0030.01015.27
7.0.170.0040.00515.39
7.0.160.0070.00515.13
7.0.150.0130.00615.21
7.0.140.0080.02917.48
7.0.130.0080.00115.27
7.0.120.0050.00715.22
7.0.110.0050.00715.36
7.0.100.0060.00315.25
7.0.90.0060.02216.76
7.0.80.0090.01716.78
7.0.70.0060.01716.87
7.0.60.0030.02016.70
7.0.50.0060.01716.87
7.0.40.0050.02115.45
7.0.30.0060.03115.56
7.0.20.0050.02715.43
7.0.10.0080.02715.61
7.0.00.0040.03315.50
5.6.400.0070.01014.58
5.6.390.0030.00914.36
5.6.380.0060.00814.26
5.6.370.0040.00714.05
5.6.360.0100.00414.21
5.6.350.0030.00814.16
5.6.340.0050.00814.26
5.6.330.0040.01014.36
5.6.320.0070.00814.25
5.6.310.0060.01114.03
5.6.300.0020.01214.11
5.6.290.0020.01214.17
5.6.280.0050.02716.41
5.6.270.0000.01314.05
5.6.260.0090.00314.11
5.6.250.0040.00813.93
5.6.240.0060.00914.07
5.6.230.0080.01916.23
5.6.220.0060.01616.25
5.6.210.0050.01716.28
5.6.200.0040.02016.48
5.6.190.0060.03316.36
5.6.180.0040.03616.34
5.6.170.0080.03416.34
5.6.160.0050.03016.33
5.6.150.0050.02416.27
5.6.140.0100.03116.28
5.6.130.0050.03216.42
5.6.120.0060.02116.35
5.6.110.0070.01616.41
5.6.100.0080.02416.43
5.6.90.0040.02016.45
5.6.80.0070.03016.16
5.6.70.0070.02616.19
5.6.60.0060.03016.07
5.6.50.0050.02216.09
5.6.40.0090.02516.04
5.6.30.0050.02016.18
5.6.20.0030.03416.00
5.6.10.0060.03016.15
5.6.00.0030.02516.25
5.5.380.0050.00512.67
5.5.370.0040.01815.14
5.5.360.0040.01715.23
5.5.350.0060.01715.16
5.5.340.0050.02415.39
5.5.330.0030.01715.44
5.5.320.0040.03115.45
5.5.310.0060.02015.46
5.5.300.0070.02615.20
5.5.290.0040.02215.44
5.5.280.0050.03615.33
5.5.270.0060.01615.40
5.5.260.0060.01515.23
5.5.250.0060.03415.33
5.5.240.0080.02815.12
5.5.230.0060.02715.22
5.5.220.0100.02515.11
5.5.210.0050.03015.11
5.5.200.0040.02315.17
5.5.190.0050.02615.14
5.5.180.0030.03215.20
5.5.170.0090.00412.57
5.5.160.0100.02615.20
5.5.150.0040.01915.00
5.5.140.0030.02015.26
5.5.130.0050.02915.11
5.5.120.0020.02315.13
5.5.110.0080.02215.15
5.5.100.0080.03115.13
5.5.90.0020.01815.01
5.5.80.0050.01915.15
5.5.70.0080.02915.20
5.5.60.0030.03115.17
5.5.50.0070.02815.14
5.5.40.0070.03115.13
5.5.30.0110.02515.18
5.5.20.0030.02715.12
5.5.10.0070.02915.13
5.5.00.0050.02815.02
5.4.450.0050.02114.36
5.4.440.0060.01514.43
5.4.430.0060.02914.45
5.4.420.0060.01814.44
5.4.410.0020.02014.43
5.4.400.0060.02714.30
5.4.390.0060.02014.30
5.4.380.0050.01814.34
5.4.370.0040.02914.30
5.4.360.0060.03014.25
5.4.350.0030.02914.30
5.4.340.0050.01914.36
5.4.330.0040.00511.93
5.4.320.0060.03214.25
5.4.310.0030.01914.29
5.4.300.0040.02714.33
5.4.290.0030.03014.30
5.4.280.0050.02214.36
5.4.270.0020.02914.31
5.4.260.0060.02714.25
5.4.250.0040.02114.29
5.4.240.0120.02314.33
5.4.230.0050.03214.30
5.4.220.0040.02714.33
5.4.210.0060.02114.32
5.4.200.0070.02314.33
5.4.190.0060.02914.33
5.4.180.0110.01414.32
5.4.170.0060.02814.29
5.4.160.0030.01914.23
5.4.150.0070.02714.28
5.4.140.0040.01813.45
5.4.130.0050.02413.44
5.4.120.0080.02813.41
5.4.110.0070.01413.45
5.4.100.0110.01213.49
5.4.90.0060.02613.44
5.4.80.0100.01713.41
5.4.70.0050.03013.45
5.4.60.0060.01913.43
5.4.50.0070.01413.43
5.4.40.0080.02213.38
5.4.30.0070.02413.42
5.4.20.0030.02313.39
5.4.10.0040.01713.44
5.4.00.0060.02513.24
5.3.290.0090.01412.83
5.3.280.0040.03112.84
5.3.270.0040.02712.83
5.3.260.0090.02712.82
5.3.250.0040.03112.83
5.3.240.0050.01712.84
5.3.230.0040.02212.82
5.3.220.0030.01812.82
5.3.210.0070.02312.82
5.3.200.0050.03112.82
5.3.190.0080.02712.82
5.3.180.0040.01712.82
5.3.170.0080.02212.84
5.3.160.0020.02812.82
5.3.150.0020.02012.83
5.3.140.0020.01512.83
5.3.130.0010.02512.84
5.3.120.0050.02412.82
5.3.110.0040.01712.82
5.3.100.0030.03112.82
5.3.90.0050.03012.82
5.3.80.0070.02812.82
5.3.70.0040.02912.82
5.3.60.0030.01812.82
5.3.50.0100.01212.82
5.3.40.0030.02312.82
5.3.30.0060.01812.82
5.3.20.0040.02912.82
5.3.10.0020.02312.82
5.3.00.0020.02212.82
5.2.170.0030.02212.88
5.2.160.0080.02512.88
5.2.150.0000.03112.88
5.2.140.0030.03012.88
5.2.130.0070.03012.88
5.2.120.0080.02812.88
5.2.110.0020.02612.88
5.2.100.0060.02912.88
5.2.90.0050.03312.88
5.2.80.0050.03212.88
5.2.70.0050.02312.88
5.2.60.0030.03212.88
5.2.50.0070.02012.88
5.2.40.0050.03112.88
5.2.30.0030.03512.88
5.2.20.0050.03412.88
5.2.10.0050.03312.88
5.2.00.0020.03812.88
5.1.60.0000.02112.88
5.1.50.0050.02712.88
5.1.40.0070.02312.88
5.1.30.0020.03312.88
5.1.20.0030.03112.88
5.1.10.0030.02512.88
5.1.00.0080.01512.88
5.0.50.0020.02512.88
5.0.40.0060.01112.88
5.0.30.0020.03312.88
5.0.20.0060.02212.88
5.0.10.0020.02112.88
5.0.00.0020.03412.88
4.4.90.0050.01312.88
4.4.80.0040.01812.88
4.4.70.0000.02212.88
4.4.60.0000.02112.88
4.4.50.0020.01812.88
4.4.40.0020.01512.88
4.4.30.0020.01312.88
4.4.20.0030.01912.88
4.4.10.0010.01112.88
4.4.00.0040.02712.88
4.3.110.0020.01212.88
4.3.100.0030.01212.88
4.3.90.0030.02012.88
4.3.80.0000.01812.88
4.3.70.0000.01512.88
4.3.60.0030.00812.88
4.3.50.0030.02012.88
4.3.40.0010.02612.88
4.3.30.0010.01912.88
4.3.20.0020.02012.88
4.3.10.0000.02012.88
4.3.00.0010.01912.88

preferences:
35.41 ms | 401 KiB | 5 Q