3v4l.org

run code in 300+ PHP versions simultaneously
<?php $refs = array(); function wrap( $arr){ // Need to clear out the global references array, I chose to do this here global $refs; $refs = array(); test( $arr); } function test( $arr){ global $refs; $refs[] = $arr; foreach( $arr as $v) { if( $v === $arr || in_array( $v, $refs)) { print ' ref '; } else { if( is_array( $v)) { test( $v); } else { print $v . ', '; } } } } echo "Array 1:\n"; $array1 = array(1, 2, 3); $array1[4] = &$array1; wrap( $array1); echo "\nArray 2:\n"; $array2 = array(1, 2, 3, array(1, 2, 3)); $array2[2] = &$array2; wrap( $array2); echo "\nArray 3:\n"; $array3 = array(1, 2, 3, array(1, 2, 3)); $array3[3][1] = &$array3; wrap( $array3);

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)
8.3.40.0080.00819.00
8.3.30.0070.00720.02
8.3.20.0050.00320.67
8.3.10.0080.00021.08
8.3.00.0050.00323.61
8.2.170.0140.00022.96
8.2.160.0100.00320.23
8.2.150.0000.00824.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0070.00021.06
8.2.110.0030.00721.18
8.2.100.0040.00718.03
8.2.90.0040.00419.26
8.2.80.0000.00817.97
8.2.70.0060.00317.63
8.2.60.0080.00017.93
8.2.50.0040.00418.07
8.2.40.0030.00619.95
8.2.30.0000.00719.45
8.2.20.0070.00017.73
8.2.10.0040.00417.70
8.2.00.0000.00717.82
8.1.270.0070.00023.99
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0000.00822.19
8.1.230.0110.00020.90
8.1.220.0040.00417.74
8.1.210.0050.00518.77
8.1.200.0040.00417.23
8.1.190.0040.00417.41
8.1.180.0040.00418.10
8.1.170.0030.00518.61
8.1.160.0000.00718.90
8.1.150.0070.00018.61
8.1.140.0080.00017.46
8.1.130.0040.00417.88
8.1.120.0070.00017.38
8.1.110.0040.00417.46
8.1.100.0080.00017.42
8.1.90.0070.00017.47
8.1.80.0040.00417.36
8.1.70.0000.00717.44
8.1.60.0030.00617.68
8.1.50.0070.00317.54
8.1.40.0030.00617.52
8.1.30.0000.00817.64
8.1.20.0060.00317.65
8.1.10.0000.00717.45
8.1.00.0000.00817.39
8.0.300.0000.00818.77
8.0.290.0050.00216.63
8.0.280.0080.00018.46
8.0.270.0000.00717.14
8.0.260.0000.00616.75
8.0.250.0040.00416.96
8.0.240.0050.00316.86
8.0.230.0000.00917.00
8.0.220.0000.00716.88
8.0.210.0030.00316.89
8.0.200.0030.00316.89
8.0.190.0000.00816.83
8.0.180.0070.00016.92
8.0.170.0030.00316.88
8.0.160.0000.00816.81
8.0.150.0000.00716.80
8.0.140.0040.00416.84
8.0.130.0030.00313.26
8.0.120.0030.00616.81
8.0.110.0040.00416.82
8.0.100.0070.00016.88
8.0.90.0040.00417.02
8.0.80.0090.00616.95
8.0.70.0020.00516.80
8.0.60.0050.00216.96
8.0.50.0030.00516.77
8.0.30.0110.00916.93
8.0.20.0130.00517.40
8.0.10.0040.00416.89
8.0.00.0100.01316.81
7.4.330.0020.00216.79
7.4.320.0060.00016.63
7.4.300.0070.00016.52
7.4.290.0030.00616.42
7.4.280.0000.00716.56
7.4.270.0000.00716.39
7.4.260.0000.00513.37
7.4.250.0000.01016.55
7.4.240.0030.00316.50
7.4.230.0070.00016.71
7.4.220.0100.01016.70
7.4.210.0090.01016.55
7.4.200.0070.00016.32
7.4.190.0070.00016.74
7.4.160.0120.00416.48
7.4.150.0160.00317.40
7.4.140.0060.01017.86
7.4.130.0100.01016.51
7.4.120.0080.00916.48
7.4.110.0110.01416.36
7.4.100.0150.00316.54
7.4.90.0070.01416.52
7.4.80.0090.00919.39
7.4.70.0070.01016.65
7.4.60.0120.00616.49
7.4.50.0080.00016.59
7.4.40.0030.00922.77
7.4.30.0120.00616.39
7.4.10.0070.01314.87
7.4.00.0050.01314.86
7.3.330.0000.00613.32
7.3.320.0000.00713.23
7.3.310.0040.00416.38
7.3.300.0030.00316.28
7.3.290.0070.01416.38
7.3.280.0020.01316.40
7.3.270.0070.01017.40
7.3.260.0090.01118.24
7.3.250.0120.00816.63
7.3.240.0070.01716.38
7.3.230.0120.00916.43
7.3.210.0070.01016.71
7.3.200.0130.01019.39
7.3.190.0150.00716.69
7.3.180.0150.00016.36
7.3.170.0060.00916.51
7.3.160.0100.00616.46
7.3.130.0060.01214.79
7.3.120.0070.01114.92
7.3.110.0070.01114.97
7.3.100.0060.00315.14
7.3.90.0070.00314.61
7.3.80.0030.00914.99
7.3.70.0120.00614.83
7.3.60.0070.00714.92
7.3.50.0090.00614.62
7.3.40.0090.00614.54
7.3.30.0040.01114.88
7.3.20.0060.00916.79
7.3.10.0090.00916.84
7.3.00.0030.00916.79
7.2.330.0100.01016.52
7.2.320.0090.00916.39
7.2.310.0090.01216.73
7.2.300.0030.01316.43
7.2.290.0080.00816.56
7.2.260.0090.00914.88
7.2.250.0100.00715.20
7.2.240.0060.00914.90
7.2.230.0000.00915.18
7.2.220.0050.00515.08
7.2.210.0070.00715.02
7.2.200.0090.00014.82
7.2.190.0060.01015.08
7.2.180.0030.00614.71
7.2.170.0000.01415.19
7.2.160.0030.01015.03
7.2.150.0060.01216.82
7.2.140.0060.00616.92
7.2.130.0040.01216.91
7.2.120.0070.00316.90
7.2.110.0000.01117.13
7.2.100.0030.00716.89
7.2.90.0110.00016.96
7.2.80.0030.01217.21
7.2.70.0100.00716.71
7.2.60.0080.00316.96
7.2.50.0070.00416.74
7.2.40.0060.00616.99
7.2.30.0040.01216.91
7.2.20.0030.01016.86
7.2.10.0090.00616.93
7.2.00.0040.01118.23
7.1.330.0040.01115.79
7.1.320.0060.00915.58
7.1.310.0070.00716.00
7.1.300.0000.00915.70
7.1.290.0090.00615.75
7.1.280.0030.01015.86
7.1.270.0060.00615.88
7.1.260.0040.00715.80
7.1.250.0080.00415.80
7.1.240.0090.00315.98
7.1.230.0090.00315.84
7.1.220.0070.00715.76
7.1.210.0000.01215.78
7.1.200.0080.00815.69
7.1.190.0090.00315.71
7.1.180.0040.01115.61
7.1.170.0030.00715.76
7.1.160.0100.00715.85
7.1.150.0000.00915.96
7.1.140.0000.01115.98
7.1.130.0060.00615.82
7.1.120.0060.00316.05
7.1.110.0090.00615.57
7.1.100.0070.00616.94
7.1.90.0040.00415.61
7.1.80.0030.01015.59
7.1.70.0050.00416.58
7.1.60.0070.01017.57
7.1.50.0070.01216.40
7.1.40.0060.00916.04
7.1.30.0070.00415.86
7.1.20.0080.00316.01
7.1.10.0130.00315.75
7.1.00.0060.02919.09
7.0.330.0040.01115.33
7.0.320.0030.01015.57
7.0.310.0030.00815.37
7.0.300.0070.00715.44
7.0.290.0040.00715.52
7.0.280.0090.00615.43
7.0.270.0060.00315.53
7.0.260.0040.00415.36
7.0.250.0060.00915.32
7.0.240.0100.00315.30
7.0.230.0000.00815.59
7.0.220.0080.00515.55
7.0.210.0000.00915.23
7.0.200.0020.01016.21
7.0.190.0000.01515.55
7.0.180.0030.01015.55
7.0.170.0000.01115.38
7.0.160.0000.00915.38
7.0.150.0030.00815.54
7.0.140.0020.04218.78
7.0.130.0110.00015.64
7.0.120.0040.00815.43
7.0.110.0040.00715.32
7.0.100.0000.00915.45
7.0.90.0040.00715.56
7.0.80.0070.00715.25
7.0.70.0080.04118.55
7.0.60.0080.04018.69
7.0.50.0020.04718.85
7.0.40.0030.03316.87
7.0.30.0050.04716.92
7.0.20.0060.03316.83
7.0.10.0050.03016.74
7.0.00.0040.03216.68
5.6.400.0030.00714.65
5.6.390.0000.01614.11
5.6.380.0000.01314.41
5.6.370.0040.00714.65
5.6.360.0000.01414.83
5.6.350.0000.01214.73
5.6.340.0000.01614.45
5.6.330.0070.00714.61
5.6.320.0080.00314.37
5.6.310.0070.00314.09
5.6.300.0110.00314.41
5.6.290.0030.01014.42
5.6.280.0020.04017.65
5.6.270.0000.00914.55
5.6.260.0090.00614.48
5.6.250.0040.01214.50
5.6.240.0060.00314.55
5.6.230.0000.00914.45
5.6.220.0080.04017.48
5.6.210.0020.04917.46
5.6.200.0030.03317.78
5.6.190.0030.04517.71
5.6.180.0030.02317.74
5.6.170.0060.02117.74
5.6.160.0040.02717.73
5.6.150.0050.03817.71
5.6.140.0030.04617.80
5.6.130.0060.04617.85
5.6.120.0080.02817.63
5.6.110.0070.04317.75
5.6.100.0030.03217.70
5.6.90.0050.04517.76
5.6.80.0080.03217.62
5.6.70.0060.02917.38
5.6.60.0080.04017.49
5.6.50.0030.02717.48
5.6.40.0050.04317.39
5.6.30.0030.04317.43
5.6.20.0020.04717.40
5.6.10.0100.03717.38
5.6.00.0040.03717.35
5.5.380.0030.00914.72
5.5.370.0080.00014.21
5.5.360.0080.03217.60
5.5.350.0090.04317.20
5.5.340.0070.04417.82
5.5.330.0070.04317.58
5.5.320.0040.02717.74
5.5.310.0070.02517.67
5.5.300.0080.04517.76
5.5.290.0080.04617.78
5.5.280.0050.02817.75
5.5.270.0080.03017.69
5.5.260.0050.03917.72
5.5.250.0020.04817.54
5.5.240.0070.03817.21
5.5.230.0030.02817.30
5.5.220.0050.03617.27
5.5.210.0020.03117.24
5.5.200.0090.02817.42
5.5.190.0020.03417.37
5.5.180.0070.04317.38
5.5.170.0030.01014.32
5.5.160.0050.03017.28
5.5.150.0020.03717.21
5.5.140.0000.03117.17
5.5.130.0060.02817.13
5.5.120.0070.02817.30
5.5.110.0030.03717.35
5.5.100.0060.04517.24
5.5.90.0080.03616.81
5.5.80.0030.04617.22
5.5.70.0030.04717.17
5.5.60.0050.04117.31
5.5.50.0070.02517.12
5.5.40.0020.02717.10
5.5.30.0030.04217.26
5.5.20.0120.04017.31
5.5.10.0050.03217.08
5.5.00.0050.04017.19
5.4.450.0000.04815.39
5.4.440.0030.03515.28
5.4.430.0050.04515.36
5.4.420.0030.04715.32
5.4.410.0060.03715.31
5.4.400.0060.03015.28
5.4.390.0030.02515.25
5.4.380.0050.04015.35
5.4.370.0050.03115.05
5.4.360.0040.04315.16
5.4.350.0090.02715.12
5.4.340.0080.03515.20
5.4.330.0030.00811.28
5.4.320.0060.02515.17
5.4.310.0060.03715.26
5.4.300.0020.02215.07
5.4.290.0050.02315.06
5.4.280.0050.02915.27
5.4.270.0050.04215.20
5.4.260.0050.02515.22
5.4.250.0040.03915.20
5.4.240.0030.03315.16
5.4.230.0030.04415.16
5.4.220.0020.04215.28
5.4.210.0050.03215.06
5.4.200.0020.04015.22
5.4.190.0080.03515.24
5.4.180.0020.04115.15
5.4.170.0020.04315.14
5.4.160.0040.03215.15
5.4.150.0050.03815.19
5.4.140.0020.03113.90
5.4.130.0050.04013.96
5.4.120.0040.04013.91
5.4.110.0050.03013.88
5.4.100.0020.04213.87
5.4.90.0070.02313.92
5.4.80.0030.03013.91
5.4.70.0050.04013.90
5.4.60.0030.03913.85
5.4.50.0010.04313.81
5.4.40.0070.04213.83
5.4.30.0050.03713.89
5.4.20.0050.02413.83
5.4.10.0000.03713.90
5.4.00.0050.03213.58
5.3.290.0010.04113.05
5.3.280.0050.04312.93
5.3.270.0100.02812.94
5.3.260.0020.03512.99
5.3.250.0000.04212.94
5.3.240.0030.03912.95
5.3.230.0040.04112.91
5.3.220.0050.03312.92
5.3.210.0030.02812.99
5.3.200.0020.03412.97
5.3.190.0030.03112.97
5.3.180.0030.03312.98
5.3.170.0050.03012.91
5.3.160.0020.04612.96
5.3.150.0030.04012.97
5.3.140.0030.03012.93
5.3.130.0040.02512.94
5.3.120.0020.04612.95
5.3.110.0020.03812.91
5.3.100.0000.04312.69
5.3.90.0030.04012.66
5.3.80.0000.04112.70
5.3.70.0070.03712.72
5.3.60.0020.04012.61
5.3.50.0050.03512.65
5.3.40.0000.02612.66
5.3.30.0030.03112.63
5.3.20.0030.03812.44
5.3.10.0030.03112.42
5.3.00.0060.02512.41
5.2.170.0030.06012.23
5.2.160.0000.06012.23
5.2.150.0100.05012.23
5.2.140.0030.05312.23
5.2.130.0030.05312.23
5.2.120.0000.04712.23
5.2.110.0000.04012.23
5.2.100.0030.05712.23
5.2.90.0030.05312.23
5.2.80.0000.04312.23
5.2.70.0030.06012.23
5.2.60.0000.04712.23
5.2.50.0000.07012.23
5.2.40.0030.05712.23
5.2.30.0030.06312.23
5.2.20.0100.05712.23
5.2.10.0070.03712.23
5.2.00.0000.05012.23
5.1.60.0070.05012.23
5.1.50.0000.06012.23
5.1.40.0000.04012.23
5.1.30.0070.05312.23
5.1.20.0000.05012.23
5.1.10.0000.05012.23
5.1.00.0030.05312.23
5.0.50.0070.04012.23
5.0.40.0000.05012.23
5.0.30.0030.06712.23
5.0.20.0030.03712.23
5.0.10.0030.04312.23
5.0.00.0030.05312.23
4.4.90.0070.02712.23
4.4.80.0030.03012.23
4.4.70.0030.03312.23
4.4.60.0000.02012.23
4.4.50.0000.03012.23
4.4.40.0000.03712.23
4.4.30.0000.03312.23
4.4.20.0030.02712.23
4.4.10.0030.03712.23
4.4.00.0000.05312.23
4.3.110.0070.03012.23
4.3.100.0030.03312.23
4.3.90.0030.03312.23
4.3.80.0000.04712.23
4.3.70.0000.03312.23
4.3.60.0000.03712.23
4.3.50.0030.03012.23
4.3.40.0000.05312.23
4.3.30.0000.03712.23
4.3.20.0000.03712.23
4.3.10.0000.03712.23
4.3.00.0000.03712.23

preferences:
46.81 ms | 400 KiB | 5 Q