3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(empty('')); var_dump(empty(0)); var_dump(empty(false)); var_dump(empty(null)); $a = 0; var_dump($a ?: 'a'); // empty var_dump($a ?? 'a'); // isset $a = ''; var_dump($a ?: 'a'); // empty var_dump($a ?? 'a'); // isset $a = false; var_dump($a ?: 'a'); // empty var_dump($a ?? 'a'); // isset $a = null; var_dump($a ?: 'a'); // empty var_dump($a ?? 'a'); // isset

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)
8.3.40.0110.00418.59
8.3.30.0140.00018.54
8.3.20.0140.00020.16
8.3.10.0040.00420.54
8.3.00.0040.00422.32
8.2.170.0030.01422.96
8.2.160.0060.00819.25
8.2.150.0070.00724.18
8.2.140.0070.00024.66
8.2.130.0040.00419.23
8.2.120.0070.00026.35
8.2.110.0000.00919.25
8.2.100.0040.00717.91
8.2.90.0000.00819.12
8.2.80.0080.00017.97
8.2.70.0000.00917.38
8.2.60.0040.00418.04
8.2.50.0050.00518.10
8.2.40.0000.00820.25
8.2.30.0000.00720.67
8.2.20.0000.00717.55
8.2.10.0040.00418.15
8.2.00.0040.00418.16
8.1.270.0040.00423.96
8.1.260.0040.00428.09
8.1.250.0070.00028.09
8.1.240.0090.00022.62
8.1.230.0080.00417.42
8.1.220.0040.00417.74
8.1.210.0060.00318.77
8.1.200.0000.01017.23
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0030.00618.41
8.1.160.0000.00720.88
8.1.150.0040.00418.95
8.1.140.0050.00319.55
8.1.130.0040.00417.57
8.1.120.0000.00717.39
8.1.110.0020.00517.38
8.1.100.0080.00017.41
8.1.90.0000.00817.36
8.1.80.0000.00717.50
8.1.70.0050.00217.36
8.1.60.0070.00017.42
8.1.50.0050.00317.56
8.1.40.0080.00317.48
8.1.30.0040.00417.45
8.1.20.0080.00017.48
8.1.10.0040.00417.38
8.1.00.0040.00417.43
8.0.300.0070.00018.77
8.0.290.0030.00516.75
8.0.280.0070.00018.39
8.0.270.0000.00717.24
8.0.260.0000.00717.25
8.0.250.0000.00716.84
8.0.240.0000.00716.84
8.0.230.0070.00016.90
8.0.220.0040.00416.87
8.0.210.0030.00416.91
8.0.200.0030.00317.00
8.0.190.0030.00616.91
8.0.180.0070.00016.91
8.0.170.0000.00716.80
8.0.160.0000.00716.93
8.0.150.0000.00816.76
8.0.140.0040.00416.82
8.0.130.0030.00313.23
8.0.120.0080.00016.77
8.0.110.0020.00516.77
8.0.100.0040.00416.82
8.0.90.0070.00016.77
8.0.80.0090.01216.89
8.0.70.0050.00216.78
8.0.60.0070.00016.95
8.0.50.0050.00316.74
8.0.30.0090.01116.99
8.0.20.0120.00817.40
8.0.10.0000.00817.10
8.0.00.0110.00816.62
7.4.330.0000.00515.08
7.4.320.0000.00616.54
7.4.300.0000.00616.51
7.4.290.0030.00316.50
7.4.280.0000.01016.52
7.4.270.0030.00316.52
7.4.260.0060.00016.51
7.4.250.0000.00816.46
7.4.240.0030.00316.64
7.4.230.0030.00316.58
7.4.220.0070.01116.48
7.4.210.0140.00316.55
7.4.200.0000.00716.53
7.4.160.0090.00616.60
7.4.150.0070.01017.40
7.4.140.0110.00717.86
7.4.130.0150.00616.39
7.4.120.0070.00916.52
7.4.110.0100.01016.55
7.4.100.0140.00316.50
7.4.90.0110.00916.40
7.4.80.0160.00319.39
7.4.70.0120.00416.44
7.4.60.0110.00416.48
7.4.50.0080.00316.39
7.4.40.0160.00416.41
7.4.30.0060.01216.54
7.4.10.0030.01314.91
7.4.00.0060.00814.89
7.3.330.0000.00513.03
7.3.320.0000.00513.16
7.3.310.0030.00316.09
7.3.300.0040.00416.23
7.3.290.0090.00516.24
7.3.280.0080.01016.23
7.3.270.0220.00317.40
7.3.260.0160.00616.34
7.3.250.0090.00916.23
7.3.240.0110.00516.25
7.3.230.0140.00616.55
7.3.210.0080.00816.47
7.3.200.0100.01316.34
7.3.190.0100.00616.57
7.3.180.0070.01016.16
7.3.170.0120.02416.20
7.3.160.0110.00616.31
7.3.130.0070.01015.05
7.3.120.0070.01114.82
7.3.110.0090.00914.62
7.3.100.0110.00414.92
7.3.90.0000.01314.79
7.3.80.0060.00614.80
7.3.70.0000.01214.61
7.3.60.0040.00814.66
7.3.50.0030.01014.70
7.3.40.0000.00914.71
7.3.30.0000.01314.63
7.3.20.0070.00716.38
7.3.10.0110.00316.44
7.3.00.0050.01116.36
7.2.330.0090.00916.18
7.2.320.0150.00516.57
7.2.310.0090.00916.29
7.2.300.0070.01316.57
7.2.290.0120.00316.37
7.2.260.0090.00915.19
7.2.250.0090.00914.88
7.2.240.0060.00814.74
7.2.230.0000.01914.85
7.2.220.0000.01215.13
7.2.210.0030.00614.63
7.2.200.0070.00314.83
7.2.190.0040.01114.84
7.2.180.0060.00614.89
7.2.170.0060.00314.99
7.2.160.0070.01014.86
7.2.150.0030.01316.76
7.2.140.0070.00716.48
7.2.130.0040.01016.73
7.2.120.0050.00616.65
7.2.110.0110.00516.60
7.2.100.0020.01116.78
7.2.90.0080.00516.82
7.2.80.0060.00716.96
7.2.70.0090.00316.68
7.2.60.0040.00716.76
7.2.50.0070.00816.58
7.2.40.0090.00316.70
7.2.30.0030.00916.56
7.2.20.0070.00716.69
7.2.10.0060.00616.65
7.2.00.0070.00916.84
7.1.330.0060.00615.67
7.1.320.0130.00615.91
7.1.310.0040.00815.42
7.1.300.0110.00415.87
7.1.290.0000.00815.73
7.1.280.0000.00915.50
7.1.270.0030.00615.91
7.1.260.0090.00615.73
7.1.250.0030.01015.64
7.1.240.0030.01315.91
7.1.230.0130.00015.65
7.1.220.0110.00015.77
7.1.210.0000.01315.84
7.1.200.0020.01015.62
7.1.190.0000.01715.45
7.1.180.0060.00615.74
7.1.170.0050.00515.85
7.1.160.0060.00915.64
7.1.150.0000.00815.64
7.1.140.0030.00815.82
7.1.130.0060.00315.45
7.1.120.0000.00815.69
7.1.110.0120.00415.75
7.1.100.0050.00516.90
7.1.90.0040.01215.72
7.1.80.0040.01215.82
7.1.70.0070.00616.36
7.1.60.0050.01417.60
7.1.50.0020.01316.08
7.1.40.0070.00715.59
7.1.30.0100.00315.87
7.1.20.0070.00715.46
7.1.10.0090.00315.69
7.1.00.0030.04219.10
7.0.330.0000.01315.34
7.0.320.0000.01015.51
7.0.310.0040.00415.26
7.0.300.0070.01015.40
7.0.290.0000.00915.32
7.0.280.0110.00014.95
7.0.270.0000.01515.04
7.0.260.0000.01315.34
7.0.250.0040.01115.34
7.0.240.0100.00315.31
7.0.230.0070.01115.34
7.0.220.0000.01115.33
7.0.210.0030.00615.31
7.0.200.0040.00415.84
7.0.190.0100.00315.37
7.0.180.0000.01415.33
7.0.170.0040.01015.35
7.0.160.0000.01015.50
7.0.150.0060.00615.30
7.0.140.0040.00715.55
7.0.130.0080.00415.40
7.0.120.0000.01315.42
7.0.110.0040.01115.25
7.0.100.0060.00315.32
7.0.90.0040.01115.41
7.0.80.0070.00415.29
7.0.70.0080.00515.33
7.0.60.0200.04217.62
7.0.50.0060.03016.62
7.0.40.0130.03316.74
7.0.30.0130.03316.82
7.0.20.0170.02916.81
7.0.10.0130.03316.78
7.0.00.0110.03616.78
5.6.400.0030.01014.31
5.6.390.0000.01014.09
5.6.380.0000.01714.25
5.6.370.0030.00613.95
5.6.360.0040.00414.10
5.6.350.0000.01213.93
5.6.340.0070.00314.14
5.6.330.0040.01114.35
5.6.320.0040.00414.28
5.6.310.0040.00414.15
5.6.300.0070.00714.09
5.6.290.0060.00614.15
5.6.280.0020.04417.40
5.6.270.0030.00713.88
5.6.260.0030.01214.38
5.6.250.0060.00614.20
5.6.240.0080.00014.09
5.6.230.0040.00813.88
5.6.220.0040.00414.05
5.6.210.0050.04517.33
5.6.200.0050.04616.08
5.6.190.0190.02717.31
5.6.180.0100.04117.47
5.6.170.0200.02317.46
5.6.160.0190.02717.33
5.6.150.0120.03717.45
5.6.140.0100.03317.36
5.6.130.0130.03417.32
5.6.120.0070.03517.15
5.6.110.0080.03217.16
5.6.100.0170.03317.21
5.6.90.0270.03517.20
5.6.80.0140.03716.83
5.6.70.0130.03116.98
5.6.60.0070.04016.99
5.6.50.0170.02516.80
5.6.40.0100.03216.97
5.6.30.0100.03516.81
5.6.20.0150.02716.78
5.6.10.0170.02516.84
5.6.00.0110.03217.01
5.5.380.0040.00814.36
5.5.370.0100.00314.26
5.5.360.0030.00714.07
5.5.350.0070.04117.13
5.5.340.0040.03915.93
5.5.330.0120.03517.09
5.5.320.0130.03217.07
5.5.310.0180.02817.10
5.5.300.0080.04017.10
5.5.290.0150.03117.31
5.5.280.0080.03717.15
5.5.270.0080.03116.94
5.5.260.0420.02317.19
5.5.250.0340.03416.90
5.5.240.0170.03716.67
5.5.230.0180.02316.93
5.5.220.0170.02816.67
5.5.210.0170.02716.73
5.5.200.0090.03616.51
5.5.190.0110.03116.73
5.5.180.0080.03316.68
5.5.170.0030.00714.18
5.5.160.0200.02316.90
5.5.150.0080.03716.67
5.5.140.0130.03016.85
5.5.130.0120.03716.83
5.5.120.0150.02516.55
5.5.110.0120.02916.50
5.5.100.0080.04116.69
5.5.90.0150.03016.79
5.5.80.0110.02816.71
5.5.70.0120.03216.68
5.5.60.0070.03216.44
5.5.50.0120.02816.68
5.5.40.0150.02816.70
5.5.30.0130.02616.76
5.5.20.0090.03116.81
5.5.10.0080.03516.65
5.5.00.0120.03116.64

preferences:
54.89 ms | 400 KiB | 5 Q