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( 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)
8.3.70.0040.01816.50
8.3.60.0100.00716.75
8.3.50.0160.00417.32
8.3.40.0090.00918.54
8.3.30.0110.00318.71
8.3.20.0040.00418.73
8.3.10.0040.00418.82
8.3.00.0060.00319.38
8.2.180.0110.01116.75
8.2.170.0110.00322.96
8.2.160.0060.00918.76
8.2.150.0030.00624.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0050.00321.05
8.2.110.0060.00322.08
8.2.100.0040.00817.97
8.2.90.0000.00819.17
8.2.80.0050.00317.97
8.2.70.0080.00017.50
8.2.60.0040.00418.00
8.2.50.0000.00918.07
8.2.40.0050.00319.50
8.2.30.0060.00317.82
8.2.20.0040.00717.81
8.2.10.0050.00319.55
8.2.00.0040.00417.57
8.1.280.0090.00625.92
8.1.270.0120.00323.99
8.1.260.0050.00326.35
8.1.250.0000.00728.09
8.1.240.0000.00922.55
8.1.230.0000.01117.83
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0100.00017.22
8.1.190.0050.00317.10
8.1.180.0030.00618.10
8.1.170.0000.00818.46
8.1.160.0000.00718.91
8.1.150.0080.00018.53
8.1.140.0050.00317.38
8.1.130.0050.00219.25
8.1.120.0040.00417.37
8.1.110.0020.00517.50
8.1.100.0040.00317.53
8.1.90.0000.00717.47
8.1.80.0040.00417.50
8.1.70.0040.00417.46
8.1.60.0050.00317.58
8.1.50.0050.00317.46
8.1.40.0000.00717.36
8.1.30.0040.00717.53
8.1.20.0070.00417.57
8.1.10.0000.00817.42
8.1.00.0000.00717.30
8.0.300.0070.00018.77
8.0.290.0060.00316.75
8.0.280.0070.00018.59
8.0.270.0040.00417.17
8.0.260.0030.00316.73
8.0.250.0000.00816.96
8.0.240.0000.00716.96
8.0.230.0030.00416.87
8.0.220.0040.00416.82
8.0.210.0000.00716.93
8.0.200.0030.00316.87
8.0.190.0000.00716.97
8.0.180.0050.00316.82
8.0.170.0030.00616.98
8.0.160.0070.00416.91
8.0.150.0030.00616.79
8.0.140.0040.00416.84
8.0.130.0030.00313.37
8.0.120.0030.00616.71
8.0.110.0040.00416.96
8.0.100.0040.00416.95
8.0.90.0040.00416.77
8.0.80.0150.00016.84
8.0.70.0000.00716.86
8.0.60.0050.00316.71
8.0.50.0070.00016.84
8.0.30.0090.00917.29
8.0.20.0090.00817.04
8.0.10.0000.00717.06
8.0.00.0120.00916.77
7.4.330.0020.00213.02
7.4.320.0070.00016.49
7.4.300.0070.00016.49
7.4.290.0030.00516.61
7.4.280.0090.00016.51
7.4.270.0000.00716.59
7.4.260.0030.00313.27
7.4.250.0040.00416.46
7.4.240.0070.00016.63
7.4.230.0070.00016.41
7.4.220.0190.00716.50
7.4.210.0110.00716.66
7.4.200.0070.00016.68
7.4.190.0080.00016.59
7.4.160.0090.01216.46
7.4.150.0170.00716.34
7.4.140.0090.00917.86
7.4.130.0090.00916.58
7.4.120.0090.01216.49
7.4.110.0120.01316.48
7.4.100.0100.00716.45
7.4.90.0090.00916.66
7.4.80.0090.01419.39
7.4.70.0090.00816.63
7.4.60.0060.01016.54
7.4.50.0000.00616.47
7.4.40.0060.00616.68
7.4.30.0090.00916.51
7.4.00.0070.00714.71
7.3.330.0000.00613.36
7.3.320.0050.00013.32
7.3.310.0040.00416.35
7.3.300.0030.00316.23
7.3.290.0080.00716.34
7.3.280.0100.00616.25
7.3.270.0120.00916.20
7.3.260.0090.00916.58
7.3.240.0130.00716.62
7.3.230.0090.00916.44
7.3.210.0060.01216.45
7.3.200.0140.00416.49
7.3.190.0060.01016.53
7.3.180.0130.00716.45
7.3.170.0130.00816.39
7.3.160.0060.00916.27
7.3.120.0070.00715.08
7.2.330.0100.01316.80
7.2.320.0040.01516.87
7.2.310.0030.01716.70
7.2.300.0100.00616.59
7.2.290.0110.00616.47
7.2.00.0000.01419.41
7.1.100.0000.00818.18
7.1.70.0040.00416.88
7.1.60.0030.01719.21
7.1.50.0100.01016.83
7.1.00.0030.03322.30
7.0.200.0220.00516.52
7.0.140.0000.07721.95
7.0.120.0030.03322.05
7.0.60.0170.06720.03
7.0.50.0000.04717.87
7.0.40.0100.08320.09
7.0.30.0300.07320.08
7.0.20.0270.04720.17
7.0.10.0300.07020.33
7.0.00.0100.07320.30
5.6.280.0100.06721.07
5.6.210.0100.07720.67
5.6.200.0070.06318.11
5.6.190.0030.06320.48
5.6.180.0130.04720.61
5.6.170.0330.07720.52
5.6.160.0070.03720.47
5.6.150.0200.07018.18
5.6.140.0070.08018.15
5.6.130.0070.08018.20
5.6.120.0030.06321.15
5.6.110.0070.08720.98
5.6.100.0070.08721.03
5.6.90.0000.09321.01
5.6.80.0100.07720.52
5.6.70.0130.07020.38
5.5.350.0230.07320.34
5.5.340.0130.03317.99
5.5.330.0100.08320.40
5.5.320.0270.03720.28
5.5.310.0130.07020.34
5.5.300.0100.07317.96
5.5.290.0030.05318.07
5.5.280.0000.08020.89
5.5.270.0070.04320.89
5.5.260.0130.08020.89
5.5.250.0030.09320.59
5.5.240.0070.08020.27
5.4.450.0330.07719.16
5.4.440.4470.05319.55
5.4.430.0130.05019.54
5.4.420.0100.05719.42
5.4.410.0170.04719.28
5.4.400.0000.06319.22
5.4.390.0130.05019.06
5.4.380.0300.05018.79
5.4.370.0100.05318.47
5.4.360.0200.05018.55
5.4.350.0080.03512.03
5.4.340.0060.04312.02
5.4.320.0070.03412.51
5.4.310.0030.04012.50
5.4.300.0080.04012.51
5.4.290.0060.04212.51
5.4.280.0060.04212.40
5.4.270.0060.04212.41
5.4.260.0070.04212.40
5.4.250.0060.04112.40
5.4.240.0070.04112.40
5.4.230.0080.04112.39
5.4.220.0090.03912.40
5.4.210.0070.04012.39
5.4.200.0060.04812.39
5.4.190.0090.04512.39
5.4.180.0100.04512.39
5.4.170.0090.04612.40
5.4.160.0060.04812.39
5.4.150.0090.04012.39
5.4.140.0090.04112.08
5.4.130.0090.03912.07
5.4.120.0060.04312.02
5.4.110.0090.04612.02
5.4.100.0080.04312.02
5.4.90.0090.04212.02
5.4.80.0080.04112.02
5.4.70.0080.03912.01
5.4.60.0070.04112.01
5.4.50.0080.03912.01
5.4.40.0060.04212.00
5.4.30.0100.03912.00
5.4.20.0090.04012.00
5.4.10.0080.04912.00
5.4.00.0110.05211.49
5.3.290.0110.04212.80
5.3.280.0070.04312.71
5.3.270.0080.04412.72
5.3.260.0070.04312.72
5.3.250.0090.04412.72
5.3.240.0090.04512.72
5.3.230.0090.04312.71
5.3.220.0100.04812.68
5.3.210.0110.04612.68
5.3.200.0100.05112.68
5.3.190.0100.05912.68
5.3.180.0090.04712.67
5.3.170.0100.04512.67
5.3.160.0130.05912.67
5.3.150.0150.06112.67
5.3.140.0100.05312.66
5.3.130.0100.05112.66
5.3.120.0100.06212.66
5.3.110.0080.05312.66
5.3.100.0140.05512.13
5.3.90.0110.04412.11
5.3.80.0110.05012.10
5.3.70.0100.05412.10
5.3.60.0110.05912.09
5.3.50.0100.04312.04
5.3.40.0080.05012.03
5.3.30.0100.04312.00

preferences:
42.15 ms | 401 KiB | 5 Q