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)
8.3.70.0130.01016.63
8.3.60.0110.00418.40
8.3.50.0100.01022.11
8.3.40.0140.00718.68
8.3.30.0090.00618.84
8.3.20.0000.00818.57
8.3.10.0000.00820.66
8.3.00.0060.00323.72
8.2.180.0070.01416.63
8.2.170.0070.01122.96
8.2.160.0040.01420.74
8.2.150.0080.00024.18
8.2.140.0030.00624.66
8.2.130.0050.00326.16
8.2.120.0040.00419.45
8.2.110.0030.00621.09
8.2.100.0120.00017.97
8.2.90.0080.00019.17
8.2.80.0050.00317.97
8.2.70.0040.00417.38
8.2.60.0030.00718.16
8.2.50.0040.00418.07
8.2.40.0000.00818.18
8.2.30.0080.00019.82
8.2.20.0060.00317.79
8.2.10.0040.00417.55
8.2.00.0030.00517.69
8.1.280.0080.00825.92
8.1.270.0070.00023.99
8.1.260.0040.00826.35
8.1.250.0000.00828.09
8.1.240.0070.00320.75
8.1.230.0000.01220.95
8.1.220.0040.00418.77
8.1.210.0040.00418.94
8.1.200.0030.00617.23
8.1.190.0040.00417.53
8.1.180.0080.00018.10
8.1.170.0080.00018.76
8.1.160.0070.00018.89
8.1.150.0050.00318.65
8.1.140.0000.00717.37
8.1.130.0000.00717.79
8.1.120.0050.00317.52
8.1.110.0000.00717.40
8.1.100.0030.00517.46
8.1.90.0040.00417.47
8.1.80.0030.00517.45
8.1.70.0070.00017.44
8.1.60.0040.00417.63
8.1.50.0040.00417.45
8.1.40.0040.00417.49
8.1.30.0040.00417.63
8.1.20.0040.00617.73
8.1.10.0000.00817.55
8.1.00.0000.00817.47
8.0.300.0070.00019.96
8.0.290.0000.00716.63
8.0.280.0030.00318.50
8.0.270.0070.00017.26
8.0.260.0030.00316.89
8.0.250.0040.00416.99
8.0.240.0100.00016.96
8.0.230.0040.00416.90
8.0.220.0000.00716.93
8.0.210.0030.00316.78
8.0.200.0040.00716.90
8.0.190.0040.00416.92
8.0.180.0050.00216.92
8.0.170.0060.00316.87
8.0.160.0090.00016.99
8.0.150.0040.00416.89
8.0.140.0100.00316.78
8.0.130.0000.00613.41
8.0.120.0000.00816.75
8.0.110.0040.00416.91
8.0.100.0070.00016.90
8.0.90.0000.00716.80
8.0.80.0060.00916.90
8.0.70.0070.00016.84
8.0.60.0040.00416.86
8.0.50.0040.00416.82
8.0.30.0110.00817.20
8.0.20.0100.00817.40
8.0.10.0070.00017.09
8.0.00.0060.01216.82
7.4.330.0000.00514.84
7.4.320.0060.00016.40
7.4.300.0040.00416.59
7.4.290.0000.00616.46
7.4.280.0070.00016.52
7.4.270.0000.00716.51
7.4.260.0000.00513.23
7.4.250.0000.00816.66
7.4.240.0030.00316.43
7.4.230.0040.00416.68
7.4.220.0100.01416.56
7.4.210.0080.00716.58
7.4.200.0050.00316.36
7.4.190.0070.00016.51
7.4.160.0100.00616.60
7.4.150.0130.00617.40
7.4.140.0080.00917.86
7.4.130.0130.01016.50
7.4.120.0140.00716.53
7.4.110.0090.00916.27
7.4.100.0150.00316.50
7.4.90.0060.01216.48
7.4.80.0040.01419.04
7.4.70.0060.01016.27
7.4.60.0100.00716.46
7.4.50.0060.00316.39
7.4.40.0030.01322.27
7.4.30.0030.01316.52
7.4.10.0100.00715.20
7.4.00.0080.01014.95
7.3.330.0030.00313.35
7.3.320.0030.00313.29
7.3.310.0070.00016.36
7.3.300.0000.00716.39
7.3.290.0070.00716.33
7.3.280.0070.00716.32
7.3.270.0100.01017.40
7.3.260.0110.01118.24
7.3.250.0110.00816.46
7.3.240.0100.00716.66
7.3.230.0000.01716.39
7.3.210.0060.01416.57
7.3.200.0090.00619.39
7.3.190.0030.01416.59
7.3.180.0090.00616.55
7.3.170.0100.00716.43
7.3.160.0100.01016.45
7.3.130.0090.00914.63
7.3.120.0080.00815.10
7.3.110.0070.01314.83
7.3.100.0040.01415.02
7.3.90.0030.01014.83
7.3.80.0090.00014.93
7.3.70.0050.00514.98
7.3.60.0100.00315.04
7.3.50.0030.01314.81
7.3.40.0100.00014.82
7.3.30.0000.01914.64
7.3.20.0150.00016.66
7.3.10.0110.00616.53
7.3.00.0110.00916.66
7.2.330.0100.00716.47
7.2.320.0030.01316.86
7.2.310.0040.01816.82
7.2.300.0160.00316.79
7.2.290.0130.00916.50
7.2.260.0160.00315.10
7.2.250.0090.01014.87
7.2.240.0000.01515.26
7.2.230.0000.01515.30
7.2.220.0100.00015.30
7.2.210.0000.01415.38
7.2.200.0000.01414.86
7.2.190.0090.00615.04
7.2.180.0080.00814.80
7.2.170.0140.00015.07
7.2.160.0040.01414.98
7.2.150.0030.01416.86
7.2.140.0060.00917.00
7.2.130.0140.00716.67
7.2.120.0110.00616.89
7.2.110.0160.00516.76
7.2.100.0100.00716.57
7.2.90.0100.00316.75
7.2.80.0140.00416.75
7.2.70.0070.00716.66
7.2.60.0090.00616.65
7.2.50.0050.01016.80
7.2.40.0090.00816.72
7.2.30.0080.00816.60
7.2.20.0100.00716.67
7.2.10.0080.00816.66
7.2.00.0050.01217.63
7.1.330.0000.01415.57
7.1.320.0090.00615.55
7.1.310.0030.00715.72
7.1.300.0030.00615.79
7.1.290.0050.00615.66
7.1.280.0070.00715.82
7.1.270.0050.00515.51
7.1.260.0070.01015.80
7.1.250.0060.01115.66
7.1.240.0030.00915.47
7.1.230.0030.01315.78
7.1.220.0070.01016.00
7.1.210.0060.00615.93
7.1.200.0050.00615.84
7.1.190.0000.00915.47
7.1.180.0070.01015.50
7.1.170.0060.00915.95
7.1.160.0090.00615.80
7.1.150.0090.00015.96
7.1.140.0090.00315.96
7.1.130.0000.01715.76
7.1.120.0090.00615.71
7.1.110.0030.00715.91
7.1.100.0070.00716.95
7.1.90.0070.01016.00
7.1.80.0040.00415.73
7.1.70.0040.00716.45
7.1.60.0070.00717.63
7.1.50.0110.00716.22
7.1.40.0100.00715.77
7.1.30.0040.00815.59
7.1.20.0100.00015.63
7.1.10.0100.00315.74
7.1.00.0060.03319.08
7.0.330.0040.01115.47
7.0.320.0070.00715.40
7.0.310.0120.00315.37
7.0.300.0070.00715.43
7.0.290.0030.00615.40
7.0.280.0080.00015.24
7.0.270.0040.00415.43
7.0.260.0030.01215.50
7.0.250.0030.00715.51
7.0.240.0060.00815.22
7.0.230.0030.01015.32
7.0.220.0000.01315.46
7.0.210.0090.00615.48
7.0.200.0050.00616.22
7.0.190.0110.00715.34
7.0.180.0040.01115.47
7.0.170.0040.01115.22
7.0.160.0000.01615.18
7.0.150.0000.01015.44
7.0.140.0050.04018.87
7.0.130.0070.00315.50
7.0.120.0130.00015.60
7.0.110.0030.01015.30
7.0.100.0040.00415.43
7.0.90.0000.01415.49
7.0.80.0030.00915.39
7.0.70.0130.00315.51
7.0.60.0020.04717.65
7.0.50.0030.03716.69
7.0.40.0100.04015.61
7.0.30.0140.02015.55
7.0.20.0070.02915.80
7.0.10.0050.04415.57
7.0.00.0070.02715.68
5.6.400.0060.00914.61
5.6.390.0030.01314.75
5.6.380.0070.00714.44
5.6.370.0060.00314.73
5.6.360.0060.00314.57
5.6.350.0090.00614.69
5.6.340.0030.01414.47
5.6.330.0040.01214.34
5.6.320.0030.01014.82
5.6.310.0090.00614.56
5.6.300.0120.00414.41
5.6.290.0070.00714.63
5.6.280.0030.04117.77
5.6.270.0000.01414.43
5.6.260.0120.00314.70
5.6.250.0000.00914.47
5.6.240.0030.00614.38
5.6.230.0000.01114.36
5.6.220.0070.00714.58
5.6.210.0150.03517.48
5.6.200.0060.03716.25
5.6.190.0050.03716.40
5.6.180.0060.02816.29
5.6.170.0070.03516.27
5.6.160.0160.03716.18
5.6.150.0070.02516.26
5.6.140.0030.04316.43
5.6.130.0080.03516.45
5.6.120.0140.03616.27
5.6.110.0090.03716.30
5.6.100.0050.02516.26
5.6.90.0050.02516.17
5.6.80.0050.04215.98
5.6.70.0050.02916.08
5.6.60.0050.04415.97
5.6.50.0120.02816.02
5.6.40.0050.04115.96
5.6.30.0130.03315.98
5.6.20.0060.02315.99
5.6.10.0020.04415.90
5.6.00.0120.03815.91
5.5.380.0030.01014.57
5.5.370.0030.00914.64
5.5.360.0000.00914.30
5.5.350.2100.02317.24
5.5.340.0050.04216.17
5.5.330.0100.04316.17
5.5.320.0110.03316.36
5.5.310.0020.04516.08
5.5.300.0050.03416.22
5.5.290.0060.02616.30
5.5.280.0050.03316.08
5.5.270.0060.02916.25
5.5.260.0080.03316.22
5.5.250.0070.04616.10
5.5.240.0070.04015.79
5.5.230.0150.03215.66
5.5.220.0090.04215.89
5.5.210.0050.02715.82
5.5.200.0050.04515.78
5.5.190.0080.02215.78
5.5.180.0050.04215.88
5.5.170.0030.01014.55
5.5.160.0030.02815.85
5.5.150.0100.04015.79
5.5.140.0030.04315.95
5.5.130.0060.04415.91
5.5.120.0030.03415.77
5.5.110.0040.04015.93
5.5.100.0140.03315.70
5.5.90.0030.02815.74
5.5.80.0060.02915.87
5.5.70.0050.02715.87
5.5.60.0050.04215.79
5.5.50.0000.03415.78
5.5.40.0070.02515.75
5.5.30.0040.03715.78
5.5.20.0070.02815.59
5.5.10.0040.04215.87
5.5.00.0100.03215.56
5.4.450.0030.03315.70
5.4.440.0060.02715.75
5.4.430.0030.02715.75
5.4.420.0100.02215.71
5.4.410.0030.04315.68
5.4.400.0020.03815.66
5.4.390.0070.02315.50
5.4.380.0080.02115.50
5.4.370.0060.03815.56
5.4.360.0020.04715.57
5.4.350.0070.03915.57
5.4.340.0050.02415.55
5.4.330.0060.00612.04
5.4.320.0100.04015.54
5.4.310.0020.03115.51
5.4.300.0020.04415.58
5.4.290.0020.04115.53
5.4.280.0050.03415.54
5.4.270.0050.03815.47
5.4.260.0060.02415.53
5.4.250.0020.04315.53
5.4.240.0020.02515.67
5.4.230.0050.03515.53
5.4.220.0000.04215.54
5.4.210.0070.03015.55
5.4.200.0020.02815.50
5.4.190.0050.04515.46
5.4.180.0050.02915.46
5.4.170.0070.03815.52
5.4.160.0070.02015.49
5.4.150.0070.02815.50
5.4.140.0020.02714.28
5.4.130.0030.03814.23
5.4.120.0060.02914.30
5.4.110.0070.04114.16
5.4.100.0060.02714.27
5.4.90.0050.02314.29
5.4.80.0080.02814.27
5.4.70.0120.02214.25
5.4.60.0060.04114.29
5.4.50.0070.02314.17
5.4.40.0050.02314.21
5.4.30.0070.03714.23
5.4.20.0040.03814.23
5.4.10.0070.03714.21
5.4.00.0100.02113.93
5.3.290.0100.03813.38
5.3.280.0070.04013.35
5.3.270.0080.03213.35
5.3.260.0050.04413.35
5.3.250.0050.04013.35
5.3.240.0090.03713.34
5.3.230.0040.04413.36
5.3.220.0010.02613.36
5.3.210.0050.02513.29
5.3.200.0050.03013.32
5.3.190.0030.03113.33
5.3.180.0060.03513.35
5.3.170.0030.03613.32
5.3.160.0040.03213.36
5.3.150.0030.04213.41
5.3.140.0050.04113.32
5.3.130.0050.02713.33
5.3.120.0060.04013.41
5.3.110.0050.03413.22
5.3.100.0020.02713.08
5.3.90.0090.03413.05
5.3.80.0050.02613.04
5.3.70.0050.03913.04
5.3.60.0070.04013.04
5.3.50.0060.03812.92
5.3.40.0030.02613.04
5.3.30.0070.04213.01
5.3.20.0000.02712.88
5.3.10.0000.02512.80
5.3.00.0100.03312.83
5.2.170.0030.06711.19
5.2.160.0070.05711.12
5.2.150.0030.06311.14
5.2.140.0030.04311.16
5.2.130.0030.04011.15
5.2.120.0000.03310.98
5.2.110.0000.04011.12
5.2.100.0070.05011.15
5.2.90.0000.05711.15
5.2.80.0070.04711.15
5.2.70.0030.03311.08
5.2.60.0000.03011.13
5.2.50.0000.03010.92
5.2.40.0030.02711.01
5.2.30.0030.02711.02
5.2.20.0030.02711.02
5.2.10.0030.03010.87
5.2.00.0130.02010.76
5.1.60.0070.01710.00
5.1.50.0000.02710.21
5.1.40.0100.01710.07
5.1.30.0000.02710.38
5.1.20.0030.02310.40
5.1.10.0030.02310.11
5.1.00.0000.0279.99
5.0.50.0030.0208.63
5.0.40.0030.0178.63
5.0.30.0030.0708.63
5.0.20.0070.0408.63
5.0.10.0030.0478.63
5.0.00.0000.0408.63
4.4.90.0000.0178.63
4.4.80.0000.0178.63
4.4.70.0000.0178.63
4.4.60.0000.0178.63
4.4.50.0030.0138.63
4.4.40.0000.0238.63
4.4.30.0000.0238.63
4.4.20.0000.0178.63
4.4.10.0030.0138.63
4.4.00.0070.0208.63
4.3.110.0000.0378.63
4.3.100.0000.0278.63
4.3.90.0070.0238.63
4.3.80.0000.0238.63
4.3.70.0000.0178.63
4.3.60.0030.0138.63
4.3.50.0000.0208.63
4.3.40.0000.0278.63
4.3.30.0030.0138.63
4.3.20.0000.0178.63
4.3.10.0030.0138.63
4.3.00.0000.0178.63

preferences:
57.11 ms | 401 KiB | 5 Q