3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array(); $arr['b'] = 'book'; foreach($arr as $key=>$val) { print "key=>$key\n"; if(!isset($arr['a'])) $arr['a'] = 'apple'; } echo '<pre>'; print_r($arr);

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)
8.3.60.0090.00618.43
8.3.50.0100.00721.95
8.3.40.0040.01118.97
8.3.30.0130.00619.22
8.3.20.0060.00320.38
8.3.10.0080.00022.05
8.3.00.0040.00420.64
8.2.180.0060.01616.50
8.2.170.0040.01122.96
8.2.160.0140.00019.16
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0030.01026.16
8.2.120.0030.00519.49
8.2.110.0030.00722.26
8.2.100.0080.00419.51
8.2.90.0000.00819.17
8.2.80.0060.00318.04
8.2.70.0030.00617.63
8.2.60.0040.00418.04
8.2.50.0050.00318.07
8.2.40.0050.00318.34
8.2.30.0000.00718.00
8.2.20.0050.00217.71
8.2.10.0050.00317.80
8.2.00.0040.00417.77
8.1.280.0100.00725.92
8.1.270.0050.00222.14
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0040.00423.63
8.1.230.0030.00819.08
8.1.220.0000.00817.79
8.1.210.0000.00818.77
8.1.200.0060.00317.25
8.1.190.0040.00417.65
8.1.180.0040.00418.73
8.1.170.0060.00318.46
8.1.160.0030.00521.88
8.1.150.0020.00518.63
8.1.140.0030.00817.50
8.1.130.0000.00717.41
8.1.120.0000.00717.45
8.1.110.0050.00317.51
8.1.100.0040.00417.47
8.1.90.0000.00817.40
8.1.80.0030.00517.51
8.1.70.0030.00317.43
8.1.60.0040.00417.55
8.1.50.0020.00517.45
8.1.40.0030.00617.51
8.1.30.0040.00417.68
8.1.20.0040.00417.52
8.1.10.0020.00517.56
8.1.00.0060.00317.52
8.0.300.0040.00418.77
8.0.290.0030.00517.18
8.0.280.0040.00418.45
8.0.270.0030.00617.19
8.0.260.0000.00616.84
8.0.250.0000.01016.95
8.0.240.0000.00716.79
8.0.230.0000.00716.86
8.0.220.0070.00016.79
8.0.210.0070.00016.79
8.0.200.0030.00316.96
8.0.190.0030.00416.91
8.0.180.0030.00316.76
8.0.170.0000.00716.88
8.0.160.0000.00716.79
8.0.150.0040.00716.82
8.0.140.0070.00016.84
8.0.130.0000.00613.25
8.0.120.0080.00016.82
8.0.110.0000.00716.75
8.0.100.0000.00716.67
8.0.90.0000.00716.83
8.0.80.0040.01116.89
8.0.70.0000.00716.87
8.0.60.0000.00716.82
8.0.50.0000.00716.78
8.0.30.0100.00917.26
8.0.20.0110.00917.40
8.0.10.0050.00217.08
8.0.00.0090.00916.75
7.4.330.0000.00515.09
7.4.320.0030.00316.59
7.4.300.0060.00016.61
7.4.290.0030.00316.43
7.4.280.0070.00016.35
7.4.270.0070.00016.63
7.4.260.0060.00616.58
7.4.250.0080.00016.38
7.4.240.0000.00816.59
7.4.230.0070.00016.50
7.4.220.0120.00616.50
7.4.210.0070.00716.56
7.4.200.0030.00516.60
7.4.190.0030.00316.69
7.4.160.0030.01316.33
7.4.150.0120.00817.40
7.4.140.0110.00817.86
7.4.130.0100.00816.48
7.4.120.0090.01016.40
7.4.110.0090.00916.52
7.4.100.0120.00616.52
7.4.90.0060.01216.52
7.4.80.0080.01519.39
7.4.70.0130.00816.45
7.4.60.0140.00516.48
7.4.50.0030.00616.52
7.4.40.0100.00722.77
7.4.30.0110.01116.48
7.4.00.0080.00815.01
7.3.330.0000.00513.03
7.3.320.0000.00513.13
7.3.310.0070.00016.47
7.3.300.0070.00016.22
7.3.290.0110.00316.28
7.3.280.0040.01116.35
7.3.270.0100.00717.40
7.3.260.0200.00316.30
7.3.250.0070.01016.45
7.3.240.0090.00816.27
7.3.230.0100.00716.71
7.3.210.0060.01316.26
7.3.200.0110.00619.39
7.3.190.0070.01016.40
7.3.180.0100.00616.31
7.3.170.0080.00716.27
7.3.160.0080.00816.45
7.3.120.0090.00714.98
7.3.110.0110.00414.73
7.3.100.0030.01114.74
7.3.90.0100.00314.80
7.3.80.0030.00714.77
7.3.70.0060.00614.80
7.3.60.0000.01314.67
7.3.50.0000.01014.85
7.3.40.0030.01014.86
7.3.30.0070.00714.83
7.3.20.0000.01216.46
7.3.10.0040.01116.56
7.3.00.0060.00916.41
7.2.330.0060.01216.58
7.2.320.0100.00716.64
7.2.310.0140.00416.46
7.2.300.0090.00916.54
7.2.290.0130.00316.65
7.2.250.0080.01114.96
7.2.240.0120.00415.11
7.2.230.0070.00715.04
7.2.220.0090.00615.13
7.2.210.0030.01015.10
7.2.200.0060.00914.83
7.2.190.0050.00514.98
7.2.180.0030.00715.05
7.2.170.0000.01314.82
7.2.00.0000.01219.20
7.1.330.0080.00815.74
7.1.320.0030.01015.86
7.1.310.0030.01015.90
7.1.300.0030.01215.55
7.1.290.0110.00415.85
7.1.280.0070.00715.65
7.1.270.0130.00015.64
7.1.260.0030.00915.54
7.1.100.0030.00918.05
7.1.70.0040.00417.29
7.1.60.0070.01719.82
7.1.50.0070.01817.05
7.1.00.0000.09722.45
7.0.200.0030.00516.85
7.0.140.0070.07322.00
7.0.70.4330.04320.13
7.0.60.0100.07020.01
7.0.50.0100.06717.84
7.0.40.0030.08320.29
7.0.30.0170.08020.13
7.0.20.0230.08020.16
7.0.10.0170.04320.33
7.0.00.0100.07320.00
5.6.280.0000.07720.91
5.6.210.0130.07320.60
5.6.200.0070.06018.18
5.6.190.0130.05320.45
5.6.180.0270.06720.61
5.6.170.0430.05320.51
5.6.160.0000.04320.48
5.6.150.0130.06318.12
5.6.140.0070.07318.09
5.6.130.0070.06718.21
5.6.120.0030.04020.99
5.6.110.0100.08320.99
5.6.100.0070.08720.88
5.6.90.0170.07020.98
5.6.80.0100.06320.36
5.6.70.0300.06320.41
5.5.350.0130.04720.36
5.5.340.0030.04317.91
5.5.330.0100.08020.38
5.5.320.0030.08720.08
5.5.310.0170.04020.29
5.5.300.0030.08718.02
5.5.290.0070.07017.90
5.5.280.0070.04320.96
5.5.270.0070.07320.76
5.5.260.0170.06320.89
5.5.250.0030.07720.68
5.5.240.0100.07720.18
5.4.450.0800.04019.27
5.4.440.0930.06019.24
5.4.430.0730.06019.50
5.4.420.0030.06019.45
5.4.410.0070.06719.11
5.4.400.0770.06318.74
5.4.390.0800.06319.10
5.4.380.0230.05018.70
5.4.370.0170.06018.56
5.4.360.0070.04018.46
5.4.350.0060.03411.97
5.4.340.0060.04311.97
5.4.320.0070.04112.45
5.4.310.0090.04312.45
5.4.300.0100.04112.45
5.4.290.0070.04412.45
5.4.280.0020.04012.35
5.4.270.0060.04112.35
5.4.260.0070.05019.00
5.4.250.0100.05018.67
5.4.240.0170.04318.84
5.4.230.0030.05318.88
5.4.220.0070.05718.99
5.4.210.0130.07318.77
5.4.200.0070.05318.84
5.4.190.0070.06018.71
5.4.180.0030.06018.87
5.4.170.0070.05318.88
5.4.160.0030.05318.75
5.4.150.0170.04318.67
5.4.140.0030.05316.23
5.4.130.0070.05716.43
5.4.120.0130.04316.40
5.4.110.0070.05016.47
5.4.100.0030.05016.42
5.4.90.0100.04316.29
5.4.80.0070.05016.22
5.4.70.0070.05716.14
5.4.60.0100.04316.48
5.4.50.0070.05016.29
5.4.40.0130.04316.26
5.4.30.0070.06016.46
5.4.20.0070.06016.34
5.4.10.0130.04716.28
5.4.00.0130.04315.74
5.3.290.0100.04412.80
5.3.280.0000.05714.50
5.3.270.0100.06314.62
5.3.260.0070.05314.47
5.3.250.0100.05014.61
5.3.240.0070.05014.47
5.3.230.0100.05014.61
5.3.220.0070.05014.43
5.3.210.0070.05314.58
5.3.200.0030.05314.58
5.3.190.0030.05314.58
5.3.180.0130.04714.41
5.3.170.0000.05314.26
5.3.160.0000.05314.42
5.3.150.0100.05014.39
5.3.140.0030.07714.46
5.3.130.0070.05014.59
5.3.120.0130.04314.32
5.3.110.0100.04714.64
5.3.100.0030.05713.89
5.3.90.0100.07013.71
5.3.80.0100.07014.03
5.3.70.0070.04713.79
5.3.60.0070.04713.86
5.3.50.0070.04713.80
5.3.40.0070.04713.78
5.3.30.0100.04313.92
5.3.20.0100.06713.60
5.3.10.0030.05313.35
5.3.00.0000.05713.63
5.2.170.0000.04711.07
5.2.160.0070.03711.07
5.2.150.0100.03711.05
5.2.140.0030.04011.25
5.2.130.0030.04311.11
5.2.120.0070.03711.03
5.2.110.0100.03311.10
5.2.100.0030.04010.93
5.2.90.0030.04011.20
5.2.80.0070.03711.10
5.2.70.0030.04011.11
5.2.60.0000.05011.05
5.2.50.0070.04011.02
5.2.40.0070.03710.91
5.2.30.0030.04010.80
5.2.20.0130.03310.97
5.2.10.0030.04010.93
5.2.00.0000.04310.64
5.1.60.0070.03010.18
5.1.50.0030.0479.88
5.1.40.0170.02010.16
5.1.30.0000.04010.48
5.1.20.0070.03010.50
5.1.10.0000.04010.21
5.1.00.0070.03310.09
5.0.50.0070.0378.69
5.0.40.0030.0378.43
5.0.30.0000.0438.12
5.0.20.0000.0278.18
5.0.10.0070.0238.00
5.0.00.0000.0438.11
4.4.90.0000.0236.57
4.4.80.0000.0236.54
4.4.70.0000.0236.44
4.4.60.0070.0236.43
4.4.50.0030.0206.41
4.4.40.0000.0336.40
4.4.30.0000.0276.40
4.4.20.0030.0206.40
4.4.10.0030.0206.82
4.4.00.0070.0306.82
4.3.110.0000.0236.82
4.3.100.0030.0206.82
4.3.90.0000.0306.82
4.3.80.0100.0306.82
4.3.70.0000.0206.82
4.3.60.0030.0206.82
4.3.50.0000.0236.82
4.3.40.0000.0336.82
4.3.30.0000.0206.82
4.3.20.0070.0176.82
4.3.10.0000.0236.82
4.3.00.0130.0177.29

preferences:
59.19 ms | 401 KiB | 5 Q