3v4l.org

run code in 300+ PHP versions simultaneously
<?php $isset = true; $array = array(); $notSetArray = array(0=>''); $string = ''; // Test Source function TestEmpty() { $array = null; $i = 0; /* The Test */ $t = microtime(true); while($i < 2000) { !empty($array); ++$i; } echo (microtime(true) - $t); } function TestEmpty2() { $array = null; $i = 0; /* The Test */ $t = microtime(true); while($i < 2000) { (! $array ); ++$i; } echo (microtime(true) - $t); } function TestEmpty3() { $array = null; $i = 0; /* The Test */ $t = microtime(true); while($i < 2000) { ($array != []); ++$i; } echo (microtime(true) - $t); } function TestEmpty4() { $array = null; $i = 0; /* The Test */ $t = microtime(true); while($i < 2000) { (gettype($array) === "array"); ++$i; } echo (microtime(true) - $t); } function TestEmpty5() { $array = null; $i = 0; /* The Test */ $t = microtime(true); while($i < 2000) { is_array($array); ++$i; } echo (microtime(true) - $t); } TestEmpty(); echo "\n\n"; TestEmpty2(); echo "\n\n"; TestEmpty3(); echo "\n\n"; TestEmpty4(); echo "\n\n"; TestEmpty5();

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)
7.2.00.0030.00919.30
7.1.70.0000.00816.93
7.1.60.0040.01117.38
7.1.50.0130.01017.08
7.1.00.0000.08022.36
7.0.200.0000.01716.89
7.0.140.0000.07721.90
7.0.110.0070.07719.89
7.0.100.0170.07319.96
7.0.90.0100.08019.90
7.0.80.0100.08020.10
7.0.70.0030.08319.92
7.0.60.0100.07719.99
7.0.50.0000.09319.93
7.0.40.0130.07719.64
7.0.30.0070.08319.72
7.0.20.0070.08319.65
7.0.10.0200.06319.86
7.0.00.0230.06719.65
5.6.280.0070.07020.79
5.6.260.0030.08020.68
5.6.250.0100.07720.69
5.6.240.0130.07320.49
5.6.230.0070.08020.70
5.6.220.0100.07720.69
5.6.210.0070.07720.60
5.6.200.0100.08720.67
5.6.190.0100.08320.60
5.6.180.0030.08320.57
5.6.170.0100.08320.66
5.6.160.0070.09020.71
5.6.150.0070.08720.66
5.6.140.0170.06320.66
5.6.130.0070.08320.70
5.6.120.0130.07720.70
5.6.110.0070.07020.55
5.6.100.0130.04320.56
5.6.90.0100.08020.56
5.6.80.0030.07719.96
5.6.70.0070.06720.06
5.6.60.0070.07720.03
5.6.50.0100.07320.05
5.6.40.0100.06020.02
5.6.30.0070.06720.01
5.6.20.0070.08320.06
5.6.10.0100.08020.00
5.6.00.0100.08019.83
5.5.380.0070.08317.54
5.5.370.0100.08017.56
5.5.360.0030.07717.55
5.5.350.0100.07317.66
5.5.340.0070.08018.13
5.5.330.0100.05017.84
5.5.320.0100.08017.84
5.5.310.0070.08317.92
5.5.300.0030.09018.13
5.5.290.0130.08018.09
5.5.280.0170.07317.95
5.5.270.0100.08017.95
5.5.260.0200.07017.95
5.5.250.0070.08717.75
5.5.240.0100.04717.49
5.5.230.0100.07317.34
5.5.220.0100.07317.31
5.5.210.0100.06717.35
5.5.200.0070.08017.27
5.5.190.0070.08317.48
5.5.180.0100.07317.45
5.5.160.0030.08317.18
5.5.150.0070.07317.48
5.5.140.0170.07017.57
5.5.130.0100.07317.57
5.5.120.0070.08017.18
5.5.110.0070.08017.57
5.5.100.0070.05717.19
5.5.90.0070.07317.39
5.5.80.0030.08017.38
5.5.70.0000.08017.18
5.5.60.0100.07017.17
5.5.50.0070.08017.47
5.5.40.0100.07317.46
5.5.30.0070.07717.20
5.5.20.0100.07717.17
5.5.10.0100.07017.36
5.5.00.0000.08017.28
5.4.450.0100.08019.32
5.4.440.0100.05719.64
5.4.430.0200.06319.33
5.4.420.0100.08019.33
5.4.410.0030.06719.38
5.4.400.0030.07319.01
5.4.390.0100.05718.98
5.4.380.0200.06719.34
5.4.370.0070.07319.33
5.4.360.0130.03019.02
5.4.350.0030.07719.01
5.4.340.0100.07319.23
5.4.320.0000.08019.04
5.4.310.0000.08319.32
5.4.300.0100.08019.33
5.4.290.0170.06319.14
5.4.280.0130.07019.18
5.4.270.0030.07718.98
5.4.260.0100.07719.30
5.4.250.0070.08019.17
5.4.240.0070.07319.24
5.4.230.0030.07719.30
5.4.220.0170.06019.10
5.4.210.0000.08718.94
5.4.200.0070.07718.94
5.4.190.0030.08019.22
5.4.180.0170.06718.97
5.4.170.0130.07018.98
5.4.160.0100.07319.17
5.4.150.0170.07019.01
5.4.140.0130.07016.58
5.4.130.0100.07016.40
5.4.120.0070.07016.48
5.4.110.0100.07316.39
5.4.100.0070.07316.71
5.4.90.0030.04316.63
5.4.80.0070.07316.45
5.4.70.0130.06316.37
5.4.60.0130.06716.45
5.4.50.0030.07716.43
5.4.40.0030.04316.49
5.4.30.0100.07016.56
5.4.20.0030.07316.53
5.4.10.0070.07716.52
5.4.00.0000.05015.73
5.3.290.0100.07314.82
5.3.280.0070.08014.61
5.3.270.0070.07714.62
5.3.260.0070.04714.84
5.3.250.0070.07314.84
5.3.240.0100.07314.62
5.3.230.0100.07014.75
5.3.220.0130.07014.70
5.3.210.0030.08014.66
5.3.200.0200.06314.43
5.3.190.0070.07714.53
5.3.180.0070.07314.58
5.3.170.0070.07314.65
5.3.160.0070.07714.65
5.3.150.0070.06714.59
5.3.140.0130.06714.80
5.3.130.0130.07014.53
5.3.120.0030.08314.57
5.3.110.0070.07714.68
5.3.100.0000.08014.08
5.3.90.0070.07713.99
5.3.80.0100.07314.04
5.3.70.0070.07714.17
5.3.60.0000.04714.05
5.3.50.0030.07314.10
5.3.40.0000.07313.92
5.3.30.0100.07314.02
5.3.20.0100.07013.71
5.3.10.0100.06313.72
5.3.00.0070.07313.63
5.2.170.0070.06011.24
5.2.160.0030.06311.28
5.2.150.0130.03311.16
5.2.140.0070.06311.11
5.2.130.0030.06311.19
5.2.120.0030.04711.11
5.2.110.0070.05711.13
5.2.100.0030.06311.08
5.2.90.0000.05711.25
5.2.80.0170.04011.07
5.2.70.0070.06011.10
5.2.60.0070.05711.05
5.2.50.0030.05311.02
5.2.40.0030.06010.96
5.2.30.0000.05010.97
5.2.20.0030.06010.95
5.2.10.0070.05710.95
5.2.00.0100.05310.75
5.1.60.0070.05010.25
5.1.50.0030.0579.88
5.1.40.0030.0479.88
5.1.30.0000.04710.32
5.1.20.0070.05710.37
5.1.10.0000.06010.27
5.1.00.0070.05010.07
5.0.50.0070.0239.88
5.0.40.0000.0209.88
5.0.30.0030.0409.88
5.0.20.0030.0239.88
5.0.10.0000.0239.88
5.0.00.0000.0339.88
4.4.90.0030.0379.88
4.4.80.0030.0309.88
4.4.70.0030.0379.88
4.4.60.0000.0239.88
4.4.50.0000.0379.88
4.4.40.0000.0539.88
4.4.30.0070.0339.88
4.4.20.0030.0339.88
4.4.10.0030.0179.88
4.4.00.0000.0279.88
4.3.110.0000.0179.88
4.3.100.0030.0139.88
4.3.90.0000.0209.88
4.3.80.0000.0279.88
4.3.70.0070.0109.88
4.3.60.0000.0179.88
4.3.50.0030.0139.88
4.3.40.0030.0209.88
4.3.30.0030.0139.88
4.3.20.0000.0179.88
4.3.10.0030.0139.88
4.3.00.0000.0309.88

preferences:
35.38 ms | 400 KiB | 5 Q