3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new stdClass(); if ($a == null) { echo "null"; print_r($a); } else if (empty($a)){ echo "empty"; print_r($a); }else if (!isset($a)){ echo "set"; print_r($a); }

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)
8.3.40.0070.00718.54
8.3.30.0100.00318.92
8.3.20.0130.00720.39
8.3.10.0080.00022.09
8.3.00.0060.00322.45
8.2.170.0120.00922.96
8.2.160.0060.00620.77
8.2.150.0040.00424.18
8.2.140.0030.00524.66
8.2.130.0090.00926.16
8.2.120.0080.00020.89
8.2.110.0060.00320.93
8.2.100.0110.00017.72
8.2.90.0040.00419.05
8.2.80.0040.00417.97
8.2.70.0030.00517.49
8.2.60.0000.00718.00
8.2.50.0000.00818.07
8.2.40.0000.00818.09
8.2.30.0090.00017.93
8.2.20.0030.00517.62
8.2.10.0050.00217.59
8.2.00.0040.00417.59
8.1.270.0030.00622.09
8.1.260.0080.00026.35
8.1.250.0050.00328.09
8.1.240.0030.00723.91
8.1.230.0120.00022.72
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0030.00717.35
8.1.190.0050.00317.29
8.1.180.0050.00318.10
8.1.170.0080.00018.42
8.1.160.0040.00421.99
8.1.150.0000.00718.58
8.1.140.0070.00017.45
8.1.130.0020.00517.86
8.1.120.0000.01017.39
8.1.110.0000.00717.46
8.1.100.0030.00317.50
8.1.90.0000.00717.44
8.1.80.0040.00417.34
8.1.70.0040.00417.39
8.1.60.0000.00817.65
8.1.50.0040.00417.50
8.1.40.0040.00417.40
8.1.30.0000.00717.64
8.1.20.0000.00817.65
8.1.10.0050.00217.40
8.1.00.0000.00717.38
8.0.300.0000.00718.77
8.0.290.0050.00217.05
8.0.280.0040.00418.32
8.0.270.0000.00717.26
8.0.260.0030.00516.78
8.0.250.0000.00716.82
8.0.240.0040.00416.89
8.0.230.0040.00416.93
8.0.220.0000.00716.80
8.0.210.0000.00716.85
8.0.200.0030.00316.88
8.0.190.0040.00416.96
8.0.180.0030.00616.81
8.0.170.0040.00416.93
8.0.160.0000.00716.82
8.0.150.0070.00016.80
8.0.140.0040.00416.86
8.0.130.0030.00313.28
8.0.120.0030.00516.81
8.0.110.0070.00016.86
8.0.100.0040.00416.75
8.0.90.0070.00016.82
8.0.80.0060.00916.85
8.0.70.0000.00716.72
8.0.60.0030.00316.75
8.0.50.0040.00416.83
8.0.30.0110.01317.23
8.0.20.0100.01017.40
8.0.10.0040.00417.04
8.0.00.0150.01016.71
7.4.330.0000.00515.13
7.4.320.0000.00716.64
7.4.300.0060.00016.57
7.4.290.0030.00316.60
7.4.280.0030.00316.44
7.4.270.0000.00716.49
7.4.260.0030.00616.63
7.4.250.0030.00316.59
7.4.240.0070.00016.51
7.4.230.0000.00816.57
7.4.220.0080.01116.41
7.4.210.0060.00816.58
7.4.200.0070.00016.71
7.4.190.0030.00316.76
7.4.160.0120.00316.58
7.4.150.0100.01317.40
7.4.140.0120.00817.86
7.4.130.0070.01216.55
7.4.120.0120.00516.57
7.4.110.0030.01416.63
7.4.100.0120.01216.47
7.4.90.0140.00316.54
7.4.80.0120.00619.39
7.4.70.0070.01016.66
7.4.60.0050.01116.42
7.4.50.0030.00316.48
7.4.40.0060.00622.77
7.4.30.0030.01316.64
7.4.00.0080.01014.78
7.3.330.0050.00013.18
7.3.320.0040.00413.05
7.3.310.0090.00016.27
7.3.300.0000.00616.27
7.3.290.0060.01316.14
7.3.280.0100.00616.24
7.3.270.0210.00017.40
7.3.260.0130.01016.30
7.3.250.0130.00816.43
7.3.240.0150.00416.27
7.3.230.0070.01416.39
7.3.210.0040.01216.09
7.3.200.0060.00919.39
7.3.190.0190.00316.38
7.3.180.0090.00616.43
7.3.170.0150.00316.27
7.3.160.0040.01416.53
7.3.120.0090.00914.82
7.3.110.0100.00814.72
7.3.100.0030.01414.82
7.3.90.0020.01414.90
7.3.80.0080.00614.79
7.3.70.0060.01014.76
7.3.60.0070.00314.79
7.3.50.0060.00614.82
7.3.40.0010.01014.66
7.3.30.0060.00814.70
7.3.20.0030.01216.52
7.3.10.0020.01316.58
7.3.00.0040.00916.59
7.2.330.0180.00016.43
7.2.320.0070.01516.57
7.2.310.0110.00716.56
7.2.300.0070.01016.65
7.2.290.0140.00316.60
7.2.250.0130.00615.03
7.2.240.0080.01114.90
7.2.230.0030.01114.64
7.2.220.0030.01014.90
7.2.210.0050.00915.06
7.2.200.0080.00514.98
7.2.190.0070.00615.12
7.2.180.0040.01215.11
7.2.170.0060.00614.96
7.2.130.0090.00616.46
7.2.120.0000.01416.75
7.2.110.0050.00516.74
7.2.100.0070.00716.71
7.2.90.0110.00317.10
7.2.80.0040.00816.80
7.2.70.0070.00716.75
7.2.60.0030.01016.91
7.2.50.0130.00317.02
7.2.40.0070.00716.81
7.2.30.0030.01317.04
7.2.20.0070.00716.50
7.2.10.0140.00316.88
7.2.00.0060.00618.14
7.1.330.0030.01015.43
7.1.320.0030.01015.83
7.1.310.0080.00515.82
7.1.300.0060.00515.63
7.1.290.0040.00715.60
7.1.280.0050.00815.64
7.1.270.0070.00815.58
7.1.260.0050.00715.61
7.1.250.0040.00815.75
7.1.240.0000.01215.51
7.1.230.0050.00515.66
7.1.220.0070.00415.65
7.1.210.0060.00615.46
7.1.200.0040.01215.82
7.1.190.0040.01115.45
7.1.180.0030.00715.84
7.1.170.0030.00915.64
7.1.160.0060.00615.75
7.1.150.0060.00615.79
7.1.140.0030.00915.48
7.1.130.0000.01115.49
7.1.120.0100.00315.64
7.1.110.0080.00415.55
7.1.100.0050.00716.76
7.1.90.0070.00715.40
7.1.80.0060.00315.65
7.1.70.0060.00316.48
7.1.60.0060.00917.58
7.1.50.0100.00616.18
7.1.40.0000.01415.58
7.1.30.0000.01415.57
7.1.20.0000.01515.61
7.1.10.0030.01315.36
7.1.00.0030.04419.09
7.0.330.0030.00915.30
7.0.320.0090.00315.33
7.0.310.0040.01115.13
7.0.300.0000.01215.29
7.0.290.0090.00015.05
7.0.280.0070.00715.35
7.0.270.0080.00815.10
7.0.260.0040.00815.41
7.0.250.0070.00715.14
7.0.240.0000.01015.45
7.0.230.0100.00315.56
7.0.220.0040.00815.54
7.0.210.0030.01015.30
7.0.200.0050.00416.08
7.0.190.0070.00715.12
7.0.180.0030.00615.37
7.0.170.0000.01115.34
7.0.160.0080.00315.39
7.0.150.0060.00615.33
7.0.140.0050.04018.86
7.0.130.0080.00415.28
7.0.120.0040.01115.19
7.0.110.0320.03217.63
7.0.100.0330.04217.58
7.0.90.0270.02317.65
7.0.80.0250.04317.56
7.0.70.0140.04917.73
7.0.60.0080.04217.67
7.0.50.0270.04817.75
7.0.40.0100.04016.64
7.0.30.0050.04516.71
7.0.20.0050.04316.76
7.0.10.0090.04216.72
7.0.00.0030.04716.82
5.6.380.0050.00214.07
5.6.370.0030.00614.48
5.6.360.0000.01114.17
5.6.350.0090.00314.32
5.6.340.0060.00313.96
5.6.330.0080.00314.16
5.6.320.0150.00014.05
5.6.310.0000.01313.81
5.6.300.0060.00314.21
5.6.290.0070.00714.14
5.6.280.0070.04017.44
5.6.270.0070.00414.21
5.6.260.0060.00914.05
5.6.250.0070.03817.48
5.6.240.0070.04517.43
5.6.230.0100.03617.29
5.6.220.0070.03717.43
5.6.210.0080.04017.37
5.6.200.0080.04517.52
5.6.190.0080.04517.56
5.6.180.0070.02617.54
5.6.170.0080.02117.64
5.6.160.0140.03817.55
5.6.150.0050.04317.46
5.6.140.0050.03017.61
5.6.130.0070.04517.55
5.6.120.0040.02817.64
5.6.110.0090.04717.67
5.6.100.0080.04117.72
5.6.90.0120.03517.75
5.6.80.0080.04317.28
5.6.70.0120.03517.42
5.6.60.0090.02517.48
5.6.50.0100.03317.28
5.6.40.0100.04017.26
5.6.30.0100.04217.39
5.6.20.0080.02617.28
5.6.10.0070.03017.23
5.6.00.0060.04317.09
5.5.380.0070.03315.56
5.5.370.0020.02315.68
5.5.360.0030.04515.80
5.5.350.0050.04415.61
5.5.340.0100.02615.67
5.5.330.0070.03515.94
5.5.320.0050.04315.97
5.5.310.0080.03715.93
5.5.300.0080.04015.74
5.5.290.0080.04315.95
5.5.280.0120.03515.94
5.5.270.0070.04015.87
5.5.260.0080.04015.80
5.5.250.0100.04215.71
5.5.240.0070.02515.67
5.5.230.0050.03715.55
5.5.220.0080.02515.67
5.5.210.0040.03915.50
5.5.200.0080.03515.63
5.5.190.0050.03515.44
5.5.180.0090.03415.55
5.5.170.0060.00610.71
5.5.160.0030.04615.56
5.5.150.0080.03815.43
5.5.140.0080.02115.57
5.5.130.0070.03615.44
5.5.120.0050.04015.52
5.5.110.0080.03815.41
5.5.100.0080.04015.52
5.5.90.0080.03315.46
5.5.80.0050.02615.63
5.5.70.0090.03615.57
5.5.60.0030.04215.50
5.5.50.0070.04015.49
5.5.40.0100.03515.38
5.5.30.0020.04815.52
5.5.20.0030.02415.33
5.5.10.0050.03815.32
5.5.00.0050.03115.43
5.4.450.0030.04115.16
5.4.440.0070.03815.32
5.4.430.0120.03815.16
5.4.420.0040.04515.14
5.4.410.0140.02215.11
5.4.400.0040.04214.82
5.4.390.0050.03014.82
5.4.380.0050.03814.96
5.4.370.0030.03515.04
5.4.360.0050.03514.78
5.4.350.0030.04314.72
5.4.340.0030.04014.88
5.4.330.0050.00510.49
5.4.320.0050.03815.01
5.4.310.0050.04214.87
5.4.300.0030.02514.92
5.4.290.0020.04714.90
5.4.280.0100.03715.05
5.4.270.0060.04115.00
5.4.260.0100.03214.85
5.4.250.0090.03314.79
5.4.240.0030.03814.98
5.4.230.0080.04014.86
5.4.220.0100.02215.02
5.4.210.0000.04314.96
5.4.200.0080.03814.84
5.4.190.0030.04315.03
5.4.180.0050.04514.94
5.4.170.0070.04014.87
5.4.160.0050.03814.87
5.4.150.0090.03714.91
5.4.140.0020.04213.68
5.4.130.0050.02613.56
5.4.120.0030.04213.66
5.4.110.0070.03413.63
5.4.100.0110.03513.58
5.4.90.0050.03913.57
5.4.80.0050.02413.71
5.4.70.0020.04213.53
5.4.60.0080.02613.59
5.4.50.0070.03813.43
5.4.40.0120.03313.42
5.4.30.0070.04013.54
5.4.20.0020.03913.44
5.4.10.0080.03513.54
5.4.00.0020.02213.30
5.3.290.0080.04112.50
5.3.280.0070.03712.54
5.3.270.0070.04212.52
5.3.260.0080.03712.45
5.3.250.0060.04112.50
5.3.240.0070.04012.55
5.3.230.0050.04012.46
5.3.220.0030.04312.49
5.3.210.0050.03912.44
5.3.200.0050.04112.57
5.3.190.0060.04012.56
5.3.180.0020.04312.47
5.3.170.0030.04212.51
5.3.160.0120.03312.47
5.3.150.0080.03512.49
5.3.140.0080.03812.53
5.3.130.0070.03312.47
5.3.120.0050.04012.45
5.3.110.0020.04412.44
5.3.100.0020.04012.27
5.3.90.0030.02012.21
5.3.80.0050.03112.29
5.3.70.0070.03712.16
5.3.60.0050.03812.28
5.3.50.0120.02012.16
5.3.40.0080.02312.21
5.3.30.0030.03912.15
5.3.20.0040.02712.06
5.3.10.0050.02512.03
5.3.00.0100.03111.98
5.2.170.0020.03310.84
5.2.160.0020.03610.76
5.2.150.0060.03210.78
5.2.140.0030.03210.78
5.2.130.0050.01810.80
5.2.120.0050.03510.74
5.2.110.0030.02910.82
5.2.100.0080.02810.83
5.2.90.0060.03010.80
5.2.80.0010.02110.80
5.2.70.0020.03610.79
5.2.60.0020.03510.80
5.2.50.0030.02710.73
5.2.40.0020.03410.77
5.2.30.0040.03010.70
5.2.20.0020.03410.70
5.2.10.0030.03110.67
5.2.00.0050.03010.60
5.1.60.0060.02510.20
5.1.50.0030.03210.21
5.1.40.0000.03110.22
5.1.30.0030.02710.39
5.1.20.0020.03410.39
5.1.10.0020.02610.31
5.1.00.0060.02710.30
5.0.50.0040.0259.47
5.0.40.0000.0279.41
5.0.30.0020.0319.39
5.0.20.0030.0139.39
5.0.10.0030.0259.39
5.0.00.0020.0359.40
4.4.90.0020.0229.39
4.4.80.0030.0189.39
4.4.70.0020.0199.39
4.4.60.0030.0199.39
4.4.50.0000.0229.39
4.4.40.0030.0269.39
4.4.30.0050.0149.39
4.4.20.0030.0189.39
4.4.10.0040.0109.39
4.4.00.0020.0259.39
4.3.110.0060.0159.39
4.3.100.0060.0159.39
4.3.90.0020.0119.39
4.3.80.0030.0289.39
4.3.70.0000.0229.39
4.3.60.0030.0189.39
4.3.50.0020.0199.39
4.3.40.0010.0289.39
4.3.30.0000.0159.39
4.3.20.0030.0189.39
4.3.10.0020.0209.39
4.3.00.0000.0219.39

preferences:
40.24 ms | 400 KiB | 5 Q