3v4l.org

run code in 300+ PHP versions simultaneously
<?php function &get_instance_ref() { static $obj; echo 'Static object: '; var_dump($obj); if (!isset($obj)) { // Assign a reference to the static variable $obj = &new stdclass; } $obj->property++; return $obj; } function &get_instance_noref() { static $obj; echo 'Static object: '; var_dump($obj); if (!isset($obj)) { // Assign the object to the static variable $obj = new stdclass; } $obj->property++; return $obj; } $obj1 = get_instance_ref(); $still_obj1 = get_instance_ref(); echo "\n"; $obj2 = get_instance_noref(); $still_obj2 = get_instance_noref(); ?>

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)
7.4.50.0170.00315.95
7.4.40.0120.00915.97
7.4.30.0080.01116.11
7.4.20.0110.00816.29
7.4.10.0110.00616.35
7.4.00.0030.01216.24
7.3.170.0040.01516.02
7.3.160.0180.00015.80
7.3.150.0120.00516.27
7.3.140.0120.00715.99
7.3.130.0070.00916.14
7.3.120.0060.01016.08
7.3.110.0090.00616.15
7.3.100.0060.01216.03
7.3.90.0060.01316.15
7.3.80.0090.00916.19
7.3.70.0110.00516.18
7.3.60.0090.00816.19
7.3.50.0110.00516.16
7.3.40.0100.00916.08
7.3.30.0050.01116.12
7.3.20.0130.00516.18
7.3.10.0080.00916.23
7.3.00.0060.00916.18
7.2.290.0050.01316.29
7.2.280.0120.00516.24
7.2.270.0110.00516.28
7.2.260.0120.00516.03
7.2.250.0100.00616.20
7.2.240.0090.00916.00
7.2.230.0060.01116.09
7.2.220.0110.00716.30
7.2.210.0110.00916.40
7.2.200.0040.01316.20
7.2.190.0080.00816.33
7.2.180.0070.00916.25
7.2.170.0070.01416.21
7.2.160.0130.00316.27
7.2.150.0070.01116.33
7.2.140.0050.01116.26
7.2.130.0100.00616.26
7.2.120.0110.00716.18
7.2.110.0080.01216.14
7.2.100.0100.00716.22
7.2.90.0120.00916.33
7.2.80.0160.00416.35
7.2.70.0130.00516.29
7.2.60.0110.00716.36
7.2.50.0090.01116.24
7.2.40.0070.01316.45
7.2.30.0100.01116.34
7.2.20.0100.00816.34
7.2.10.0070.01116.04
7.2.00.0070.00916.25
7.1.330.0090.00915.32
7.1.320.0170.00915.31
7.1.310.0180.00315.51
7.1.300.0210.00415.16
7.1.290.0160.00815.18
7.1.280.0340.00915.28
7.1.270.0170.00515.41
7.1.260.0140.00715.22
7.1.250.0110.00815.18
7.1.240.0150.00715.27
7.1.230.0130.00815.22
7.1.220.0220.00715.19
7.1.210.0160.01015.16
7.1.200.0280.01315.13
7.1.190.0110.01215.17
7.1.180.0110.01015.23
7.1.170.0200.00915.19
7.1.160.0150.00815.17
7.1.150.0190.00715.27
7.1.140.0150.00815.19
7.1.130.0160.01015.17
7.1.120.0130.00815.04
7.1.110.0190.00915.23
7.1.100.0180.00715.17
7.1.90.0170.01015.02
7.1.80.0210.00615.13
7.1.70.0130.00915.33
7.1.60.0180.00715.32
7.1.50.0130.01015.27
7.1.40.0150.00815.47
7.1.30.0190.01015.26
7.1.20.0100.00915.07
7.1.10.0130.00715.02
7.1.00.0080.01015.14
7.0.330.0150.00414.90
7.0.320.0110.00914.99
7.0.310.0160.00714.93
7.0.300.0290.00914.90
7.0.290.0120.00914.98
7.0.280.0180.00814.90
7.0.270.0100.00914.89
7.0.260.0260.00314.94
7.0.250.0200.00415.08
7.0.240.0120.01215.00
7.0.230.0150.01114.88
7.0.220.0170.00815.03
7.0.210.0160.00615.03
7.0.200.0110.01014.97
7.0.190.0170.00315.04
7.0.180.0180.00314.85
7.0.170.0140.00814.86
7.0.160.0110.01114.95
7.0.150.0160.00614.86
7.0.140.0090.01014.93
7.0.130.0140.00514.79
7.0.120.0120.00715.08
7.0.110.0130.00614.79
7.0.100.0080.01014.71
7.0.90.0110.00814.84
7.0.80.0120.01014.93
7.0.70.0120.00714.79
7.0.60.0120.00714.95
7.0.50.0120.01214.89
7.0.40.0090.00914.95
7.0.30.0170.00715.01
7.0.20.0100.01414.80
7.0.10.0140.00714.97
7.0.00.0120.01114.85
5.6.400.0130.01015.69
5.6.390.0120.01115.70
5.6.380.0120.01015.95
5.6.370.0140.00915.91
5.6.360.0160.00915.87
5.6.350.0110.01715.99
5.6.340.0150.00916.02
5.6.330.0150.01016.00
5.6.320.0180.00715.83
5.6.310.0090.01816.01
5.6.300.0090.01316.06
5.6.290.0100.01015.80
5.6.280.0090.03117.41
5.6.270.0200.00215.81
5.6.260.0150.01015.71
5.6.250.0150.00915.83
5.6.240.0130.00915.83
5.6.230.0140.03217.42
5.6.220.0140.02017.46
5.6.210.0100.02517.32
5.6.200.0120.02217.57
5.6.190.0150.02917.66
5.6.180.0100.03517.70
5.6.170.0150.02517.60
5.6.160.0110.03117.47
5.6.150.0110.02417.47
5.6.140.0130.03117.67
5.6.130.0100.03517.65
5.6.120.0100.02517.65
5.6.110.0090.03717.56
5.6.100.0140.02917.56
5.6.90.0110.02817.63
5.6.80.0110.03317.27
5.6.70.0120.03117.26
5.6.60.0100.03317.32
5.6.50.0120.03417.28
5.6.40.0100.02517.26
5.6.30.0070.03817.32
5.6.20.0100.03017.01
5.6.10.0130.02817.18
5.6.00.0110.02217.14
5.5.380.0180.00716.03
5.5.370.0140.02817.50
5.5.360.0090.02717.15
5.5.350.0130.02217.35
5.5.340.0090.02817.43
5.5.330.0150.03217.38
5.5.320.0110.03717.53
5.5.310.0100.02617.35
5.5.300.0140.03517.36
5.5.290.0130.03417.52
5.5.280.0100.02717.53
5.5.270.0160.02517.33
5.5.260.0150.01917.27
5.5.250.0150.03017.23
5.5.240.0180.01617.27
5.5.230.0170.02317.18
5.5.220.0160.03417.19
5.5.210.0150.03317.27
5.5.200.0090.02817.20
5.5.190.0120.02117.32
5.5.180.0130.03617.22
5.5.170.0110.01215.92
5.5.160.0130.02917.15
5.5.150.0150.03117.29
5.5.140.0090.03817.16
5.5.130.0180.02917.19
5.5.120.0150.02517.21
5.5.110.0190.01817.17
5.5.100.0140.03217.20
5.5.90.0180.03117.29
5.5.80.0110.03517.25
5.5.70.0130.03217.28
5.5.60.0120.02117.20
5.5.50.0100.02617.07
5.5.40.0070.02417.22
5.5.30.0110.02316.97
5.5.20.0050.03717.25
5.5.10.0120.03117.18
5.5.00.0130.03117.12
5.4.450.0080.01814.86
5.4.440.0040.02714.78
5.4.430.0080.02714.89
5.4.420.0050.02514.85
5.4.410.0100.02014.71
5.4.400.0150.02414.76
5.4.390.0110.02314.82
5.4.380.0070.03214.70
5.4.370.0050.03714.84
5.4.360.0080.01714.71
5.4.350.0060.03314.75
5.4.340.0060.03014.76
5.4.330.0070.00812.57
5.4.320.0140.02714.77
5.4.310.0090.03214.72
5.4.300.0090.03214.79
5.4.290.0110.02314.90
5.4.280.0100.02414.79
5.4.270.0100.02114.63
5.4.260.0120.03114.77
5.4.250.0090.02114.74
5.4.240.0100.02614.67
5.4.230.0110.02714.70
5.4.220.0090.02114.63
5.4.210.0110.01814.88
5.4.200.0100.02014.65
5.4.190.0090.02314.73
5.4.180.0110.02714.74
5.4.170.0080.03214.66
5.4.160.0070.02114.79
5.4.150.0070.02614.62
5.4.140.0090.01813.99
5.4.130.0110.02413.76
5.4.120.0110.02213.97
5.4.110.0060.03113.87
5.4.100.0080.02413.77
5.4.90.0070.03013.81
5.4.80.0100.02713.88
5.4.70.0090.02113.83
5.4.60.0070.02313.86
5.4.50.0110.01713.80
5.4.40.0110.02513.85
5.4.30.0080.02013.86
5.4.20.0080.02313.86
5.4.10.0110.02213.79
5.4.00.0120.01413.72
5.3.290.0050.02813.72
5.3.280.0080.02913.61
5.3.270.0080.02413.65
5.3.260.0160.02813.67
5.3.250.0080.01913.69
5.3.240.0070.03213.54
5.3.230.0070.02713.60
5.3.220.0130.02813.45
5.3.210.0110.02513.55
5.3.200.0100.03313.47
5.3.190.0100.02213.54
5.3.180.0070.02013.60
5.3.170.0070.02313.61
5.3.160.0120.01813.65
5.3.150.0110.02913.56
5.3.140.0080.02913.53
5.3.130.0140.03013.59
5.3.120.0120.01713.54
5.3.110.0070.03713.52
5.3.100.0090.02213.43
5.3.90.0140.01813.42
5.3.80.0090.02313.34
5.3.70.0100.02613.32
5.3.60.0110.02713.31
5.3.50.0110.02113.42
5.3.40.0130.01413.36
5.3.30.0080.03013.33
5.3.20.0090.02513.38
5.3.10.0100.02113.15
5.3.00.0060.03313.05
5.2.170.0100.01812.25
5.2.160.0090.01612.28
5.2.150.0070.02412.28
5.2.140.0050.03712.22
5.2.130.0090.03112.25
5.2.120.0090.03012.25
5.2.110.0080.02512.19
5.2.100.0060.03912.25
5.2.90.0070.02812.26
5.2.80.0120.02812.21
5.2.70.0080.02812.19
5.2.60.0070.03412.17
5.2.50.0080.03612.31
5.2.40.0040.03212.24
5.2.30.0110.03312.20
5.2.20.0080.03012.12
5.2.10.0110.02312.12
5.2.00.0060.02712.07
5.1.60.0070.02511.63
5.1.50.0060.02611.77
5.1.40.0070.03211.77
5.1.30.0070.02911.78
5.1.20.0060.02811.76
5.1.10.0060.02511.83
5.1.00.0090.03011.64
5.0.50.0050.02411.51
5.0.40.0090.02211.51
5.0.30.0030.03011.51
5.0.20.0090.02111.51
5.0.10.0030.01711.51
5.0.00.0090.01811.51
4.4.90.0050.01311.51
4.4.80.0040.01911.51
4.4.70.0060.01011.51
4.4.60.0060.01611.51
4.4.50.0050.01811.51
4.4.40.0050.02111.51
4.4.30.0030.01311.51
4.4.20.0060.01811.51
4.4.10.0030.02111.51
4.4.00.0070.02411.51
4.3.110.0050.01811.51
4.3.100.0030.01611.51
4.3.90.0070.01111.51
4.3.80.0060.02211.51
4.3.70.0060.01311.51
4.3.60.0080.00511.51
4.3.50.0040.00911.51
4.3.40.0020.01611.51
4.3.30.0020.01011.51
4.3.20.0020.01011.51
4.3.10.0020.01011.51
4.3.00.0040.00811.51

preferences:
166.77 ms | 1394 KiB | 7 Q