3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test { private $array = []; public function __construct() { $i = 0; while ($i < 10) { $this->array[$i] = str_repeat(" ", 1e6); $i++; } } public function &variables() { return $this->array; } } echo xdebug_memory_usage() . "\n"; $test = new Test(); echo xdebug_memory_usage() . "\n"; $vars = $test->variables(); echo xdebug_memory_usage() . "\n"; array_search("test", $vars); echo xdebug_memory_usage() . "\n"; //echo xdebug_debug_zval("vars") . "\n";

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)
8.3.40.0110.00418.89
8.3.30.0070.00718.88
8.3.20.0040.00420.13
8.3.10.0040.00421.95
8.3.00.0080.00019.79
8.2.170.0040.01118.98
8.2.160.0030.01322.96
8.2.150.0050.00324.18
8.2.140.0060.00324.66
8.2.130.0040.00426.16
8.2.120.0030.00519.13
8.2.110.0060.00320.36
8.2.100.0070.00418.09
8.2.90.0000.00819.11
8.2.80.0030.00617.97
8.2.70.0030.00517.50
8.2.60.0030.00617.68
8.2.50.0080.00018.07
8.2.40.0050.00318.03
8.2.30.0000.00819.24
8.2.20.0000.00717.74
8.2.10.0040.00418.04
8.2.00.0000.00917.94
8.1.270.0050.00320.33
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00323.96
8.1.230.0000.01019.09
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0090.00317.10
8.1.190.0090.00017.09
8.1.180.0040.00418.10
8.1.170.0040.00418.47
8.1.160.0040.00421.84
8.1.150.0000.00818.70
8.1.140.0070.00017.31
8.1.130.0030.00317.71
8.1.120.0050.00217.36
8.1.110.0040.00417.20
8.1.100.0000.00717.28
8.1.90.0000.00817.36
8.1.80.0070.00017.35
8.1.70.0030.00317.27
8.1.60.0000.00817.45
8.1.50.0040.00417.48
8.1.40.0000.00817.39
8.1.30.0000.00817.54
8.1.20.0030.00617.59
8.1.10.0040.00417.50
8.1.00.0000.00817.29
8.0.300.0000.00818.77
8.0.290.0000.00816.75
8.0.280.0000.00718.48
8.0.270.0070.00017.19
8.0.260.0030.00317.23
8.0.250.0050.00216.84
8.0.240.0040.00416.97
8.0.230.0040.00416.93
8.0.220.0030.00316.86
8.0.210.0000.00716.86
8.0.200.0060.00016.90
8.0.190.0040.00416.83
8.0.180.0000.00716.90
8.0.170.0050.00316.92
8.0.160.0070.00016.89
8.0.150.0030.00316.73
8.0.140.0050.00216.84
8.0.130.0060.00013.33
8.0.120.0030.00516.77
8.0.110.0030.00616.73
8.0.100.0080.00016.82
8.0.90.0060.00316.94
8.0.80.0060.01216.84
8.0.70.0070.00016.92
8.0.60.0040.00416.95
8.0.50.0000.00716.94
8.0.30.0100.00717.16
8.0.20.0030.01617.40
8.0.10.0000.00716.92
8.0.00.0090.00916.73
7.4.330.0020.00215.03
7.4.320.0070.00016.38
7.4.300.0030.00316.55
7.4.290.0070.00016.52
7.4.280.0050.00516.57
7.4.270.0000.00716.55
7.4.260.0000.00716.46
7.4.250.0040.00416.31
7.4.240.0000.00716.49
7.4.230.0030.00316.34
7.4.220.0120.00616.54
7.4.210.0030.01016.38
7.4.200.0000.00716.56
7.4.160.0060.00916.56
7.4.150.0090.00917.40
7.4.140.0100.01017.86
7.4.130.0070.01516.62
7.4.120.0110.00916.45
7.4.110.0130.00716.52
7.4.100.0230.00016.27
7.4.90.0100.00716.35
7.4.80.0030.01419.39
7.4.70.0130.00316.48
7.4.60.0040.01216.56
7.4.50.0040.00016.07
7.4.40.0100.00716.57
7.4.30.0120.00816.43
7.4.00.0030.01114.80
7.3.330.0050.00013.30
7.3.320.0020.00213.13
7.3.310.0040.00416.33
7.3.300.0030.00316.17
7.3.290.0060.00916.32
7.3.280.0100.00716.29
7.3.270.0120.00617.40
7.3.260.0040.01316.52
7.3.250.0110.00516.25
7.3.240.0090.00616.29
7.3.230.0130.01316.52
7.3.210.0040.01716.53
7.3.200.0110.00716.26
7.3.190.0040.01216.32
7.3.180.0150.00616.24
7.3.170.0100.00716.49
7.3.160.0000.01616.53
7.3.120.0130.00614.72
7.3.110.0040.01414.98
7.3.100.0060.00814.62
7.3.90.0000.00814.82
7.3.80.0100.00714.56
7.3.70.0120.00614.86
7.3.60.0120.00614.58
7.3.50.0030.00714.54
7.3.40.0030.01314.82
7.3.30.0000.01214.57
7.3.20.0070.00716.69
7.3.10.0040.00716.34
7.3.00.0030.01416.63
7.2.330.0110.00716.55
7.2.320.0060.00916.56
7.2.310.0030.01416.61
7.2.300.0040.02116.57
7.2.290.0170.00016.42
7.2.250.0030.01614.91
7.2.240.0030.01714.94
7.2.230.0130.00314.93
7.2.220.0060.00615.14
7.2.210.0000.00915.04
7.2.200.0030.01014.70
7.2.190.0070.00715.00
7.2.180.0070.00414.60
7.2.170.0120.00314.93
7.2.110.0060.00916.51
7.2.100.0030.01016.17
7.2.90.0090.00616.43
7.2.80.0030.00916.17
7.2.70.0060.01016.88
7.2.60.0120.00216.84
7.2.50.0030.00616.55
7.2.40.0030.01316.78
7.2.30.0060.00616.97
7.2.20.0040.00816.92
7.2.10.0000.00916.80
7.2.00.0070.00716.66
7.1.330.0070.00715.61
7.1.320.0060.00915.75
7.1.310.0110.00415.63
7.1.300.0000.01215.48
7.1.290.0030.01015.41
7.1.280.0000.00815.41
7.1.270.0070.00415.77
7.1.260.0000.01315.55
7.1.230.0060.00315.60
7.1.220.0070.00715.68
7.1.210.0120.00315.35
7.1.200.0040.00815.60
7.1.190.0110.00015.46
7.1.180.0060.00615.71
7.1.170.0120.00315.63
7.1.160.0080.00815.35
7.1.150.0030.01015.73
7.1.140.0030.01015.78
7.1.130.0120.00315.75
7.1.120.0030.00515.48
7.1.110.0060.00615.54
7.1.100.0030.01215.76
7.1.90.0000.01215.80
7.1.80.0030.00615.43
7.1.70.0080.00616.33
7.1.60.0050.01617.81
7.1.50.0120.00616.39
7.1.40.0030.01315.99
7.1.30.0170.00715.75
7.1.20.0120.00315.73
7.1.10.0080.00715.28
7.1.00.0110.03819.05
7.0.310.0100.00315.34
7.0.300.0030.01015.16
7.0.290.0000.01215.18
7.0.280.0060.00615.23
7.0.270.0030.01015.23
7.0.260.0100.00315.41
7.0.250.0030.01215.38
7.0.240.0000.01614.95
7.0.230.0060.01015.09
7.0.220.0040.01215.16
7.0.210.0070.00715.13
7.0.200.0030.00716.05
7.0.190.0000.01215.44
7.0.180.0060.00615.21
7.0.170.0060.01115.40
7.0.160.0110.00515.38
7.0.150.0070.01115.17
7.0.140.0040.01015.25
7.0.130.0100.00515.47
7.0.120.0110.00015.24
7.0.110.0130.00215.21
7.0.100.0100.00515.43
7.0.90.0170.00315.16
7.0.80.0160.00415.26
7.0.70.0160.00315.32
7.0.60.0200.03817.76
7.0.50.0150.04016.61
7.0.40.0120.03416.75
7.0.30.0230.03716.83
7.0.20.0170.03716.71
7.0.10.0120.02316.88
7.0.00.0110.04316.84
5.6.380.0030.00914.09
5.6.370.0040.00713.92
5.6.360.0040.01114.26
5.6.350.0110.00014.20
5.6.340.0030.00813.91
5.6.330.0030.01013.96
5.6.320.0070.00313.82
5.6.310.0110.00013.83
5.6.300.0120.00914.38
5.6.290.0090.00414.16
5.6.280.0060.03817.62
5.6.270.0110.00714.04
5.6.260.0110.00414.50
5.6.250.0110.00414.08
5.6.240.0210.00814.13
5.6.230.0140.00013.96
5.6.220.0110.00313.96
5.6.210.0100.04317.49
5.6.200.0120.02916.10
5.6.190.0050.02717.21
5.6.180.0160.03317.38
5.6.170.0170.03217.33
5.6.160.0070.04716.02
5.6.150.0100.03416.11
5.6.140.0090.04315.99
5.6.130.0050.02815.96
5.6.120.0150.03517.58
5.6.110.0120.04017.54
5.6.100.0070.02417.47
5.6.90.0090.02417.62
5.6.80.0150.04017.21
5.6.70.0200.00013.93
5.6.60.0100.00513.84
5.6.50.0130.00313.87
5.6.40.0110.00714.09
5.6.30.0110.00414.03
5.6.20.0000.01213.90
5.6.10.0080.00814.23
5.6.00.0120.00614.06
5.5.380.0100.00312.79
5.5.370.0050.00512.79
5.5.360.0080.00412.79
5.5.350.0090.04516.59
5.5.340.0080.02315.37
5.5.330.0130.03816.53
5.5.320.0090.03016.58
5.5.310.0150.01916.55
5.5.300.0070.02015.37
5.5.290.0080.02015.44
5.5.280.0050.02616.74
5.5.270.0080.04316.78
5.5.260.0100.04016.84
5.5.250.0040.03916.65
5.5.240.1560.02216.50
5.5.230.0050.01012.79
5.5.220.0080.00412.79
5.5.210.0130.00012.79
5.5.200.0080.00812.79
5.5.190.0060.00912.79
5.5.180.0090.00512.79
5.5.170.0070.00713.93
5.5.160.0080.00212.79
5.5.150.0110.00312.79
5.5.140.0150.00012.79
5.5.130.0100.00012.79
5.5.120.0150.00012.79
5.5.110.0060.00612.79
5.5.100.0070.00312.79
5.5.90.0000.01312.79
5.5.80.0050.00512.79
5.5.70.0080.00512.79
5.5.60.0120.00212.79
5.5.50.0080.00412.79
5.5.40.0130.00412.79
5.5.30.0120.00412.79
5.5.20.0080.00512.79
5.5.10.0070.00312.79
5.5.00.0100.00012.79
5.4.450.0440.03015.99
5.4.440.0230.03116.00
5.4.430.0070.03016.24
5.4.420.0050.03316.16
5.4.410.0050.03515.95
5.4.400.0160.02216.01
5.4.390.0130.02315.88
5.4.380.0050.03215.95
5.4.370.0080.03516.01
5.4.360.0070.02915.96
5.4.350.0100.02815.96
5.4.340.0050.03315.90
5.4.330.0110.00012.79
5.4.320.0050.03815.92
5.4.310.0040.03315.96
5.4.300.0080.03015.90
5.4.290.0040.03416.01
5.4.280.0060.03015.90
5.4.270.0080.02815.96
5.4.260.0130.02315.90
5.4.250.0090.03216.01
5.4.240.0100.02915.95
5.4.230.0100.03015.90
5.4.220.0140.02315.93
5.4.210.0090.03015.92
5.4.200.0070.02914.88
5.4.190.0100.02715.99
5.4.180.0130.02515.92
5.4.170.0110.02615.93
5.4.160.0100.02715.99
5.4.150.0090.02716.00
5.4.140.0100.03014.59
5.4.130.0030.03014.52
5.4.120.0090.02614.67
5.4.110.0060.03014.70
5.4.100.0110.02514.72
5.4.90.0080.02814.71
5.4.80.0030.03214.72
5.4.70.0080.02814.71
5.4.60.0090.03014.67
5.4.50.0120.02514.61
5.4.40.0100.03014.58
5.4.30.0170.02714.62
5.4.20.0130.03014.55
5.4.10.0040.03314.61
5.4.00.0150.02514.41
5.3.290.0070.03513.80
5.3.280.0120.02813.62
5.3.270.0070.03213.66
5.3.260.0070.03113.70
5.3.250.0130.02513.77
5.3.240.0100.02813.73
5.3.230.0140.02313.68
5.3.220.0120.02513.63
5.3.210.0060.03113.68
5.3.200.0150.03513.60
5.3.190.0090.02713.68
5.3.180.0150.02213.69
5.3.170.0130.02313.65
5.3.160.0090.02913.70
5.3.150.0080.03113.68
5.3.140.0110.02513.72
5.3.130.0100.02713.62
5.3.120.0150.02413.72
5.3.110.0080.02813.63
5.3.100.0070.02713.38
5.3.90.0030.03113.41
5.3.80.0070.02713.36
5.3.70.0060.03013.38
5.3.60.0090.02713.39
5.3.50.0100.02713.34
5.3.40.0150.02313.35
5.3.30.0090.02513.30
5.3.20.0090.02813.22
5.3.10.0060.03413.17
5.3.00.0000.03613.19
5.2.170.0120.01811.92
5.2.160.0020.02711.96
5.2.150.0030.02611.96
5.2.140.0080.02311.92
5.2.130.0060.02211.93
5.2.120.0130.02311.88
5.2.110.0050.03011.93
5.2.100.0020.02511.89
5.2.90.0110.02711.87
5.2.80.0090.03011.93
5.2.70.0060.02311.91
5.2.60.0050.02411.90
5.2.50.0020.02711.85
5.2.40.0030.02411.86
5.2.30.0040.02611.95
5.2.20.0020.02511.85
5.2.10.0100.01811.83
5.2.00.0080.02011.76
5.1.60.0010.02011.35
5.1.50.0040.02011.36
5.1.40.0060.02011.34
5.1.30.0100.02011.56
5.1.20.0040.02111.60
5.1.10.0020.02311.42
5.1.00.0060.01711.38
5.0.50.0080.01310.68
5.0.40.0010.01710.55
5.0.30.0030.02510.45
5.0.20.0100.01510.49
5.0.10.0020.01610.48
5.0.00.0070.02210.47
4.4.90.0030.0149.35
4.4.80.0020.0129.31
4.4.70.0050.0099.34
4.4.60.0060.0139.35
4.4.50.0060.0119.35
4.4.40.0030.0239.27
4.4.30.0020.0139.26
4.4.20.0060.0139.36
4.4.10.0040.0129.36
4.4.00.0020.0239.33
4.3.110.0030.0149.32
4.3.100.0030.0149.28
4.3.90.0030.0139.23
4.3.80.0090.0179.28
4.3.70.0020.0149.27
4.3.60.0020.0159.23
4.3.50.0020.0129.26
4.3.40.0040.0179.27
4.3.30.0020.0138.62
4.3.20.0020.0138.66
4.3.10.0020.0148.58
4.3.00.0080.0159.91

preferences:
57.96 ms | 400 KiB | 5 Q