3v4l.org

run code in 300+ PHP versions simultaneously
<?php $isset = true; $array = array(); $notSetArray = array(0=>''); $string = ''; // Test Source function TestEmpty() { $array = array(); unset($array); $i = 0; /* The Test */ $t = microtime(true); while($i < 2000) { empty($arrday); ++$i; } echo (microtime(true) - $t); } function TestEmpty2() { $array = array(); unset($array); $i = 0; /* The Test */ $t = microtime(true); while($i < 2000) { ($array == []); ++$i; } echo (microtime(true) - $t); } function TestEmpty3() { $array = array(); unset($array); $i = 0; /* The Test */ $t = microtime(true); while($i < 2000) { ($array === []); ++$i; } echo (microtime(true) - $t); } TestEmpty(); echo '<hr>-----'; TestEmpty2(); echo '<hr>-----'; TestEmpty3();

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)
7.3.10.0070.01016.40
7.3.00.0130.00316.43
7.2.130.0070.00716.64
7.2.120.0130.00816.67
7.2.110.0160.00616.40
7.2.100.0080.01216.87
7.2.90.0110.00716.92
7.2.80.0070.01016.42
7.2.70.0060.00616.75
7.2.60.0030.00916.63
7.2.50.0120.00316.62
7.2.40.0070.00716.52
7.2.30.0090.00916.81
7.2.20.0130.00616.77
7.2.10.0040.01116.58
7.2.00.0040.00718.03
7.1.250.0110.00715.22
7.1.70.0030.00517.04
7.1.60.0030.02319.39
7.1.50.0070.01717.03
7.1.00.0000.08022.43
7.0.200.0030.01016.97
7.0.140.0070.07021.95
7.0.100.0170.08020.11
7.0.90.0100.09319.81
7.0.80.0270.04719.82
7.0.70.0230.07719.95
7.0.60.0230.03720.00
7.0.50.0130.09020.29
7.0.40.0230.06720.13
7.0.30.0070.08719.93
7.0.20.0200.06320.05
7.0.10.0030.08719.98
7.0.00.0030.08020.01
5.6.280.0070.07321.08
5.6.250.0030.08720.67
5.6.240.0130.08320.64
5.6.230.0100.08020.67
5.6.220.0130.07020.60
5.6.210.0070.08320.69
5.6.200.0230.07320.97
5.6.190.0100.07720.88
5.6.180.0000.05721.00
5.6.170.0200.06020.89
5.6.160.0030.09020.92
5.6.150.0070.07020.98
5.6.140.0030.09021.01
5.6.130.0100.07721.02
5.6.120.0100.08020.99
5.6.110.0030.07021.09
5.6.100.0100.08320.88
5.6.90.0200.07321.04
5.6.80.0000.08720.29
5.6.70.0100.08020.39
5.6.60.0070.07720.35
5.6.50.0130.07020.29
5.6.40.0070.08020.35
5.6.30.0070.08320.39
5.6.20.0070.08020.48
5.6.10.0100.07720.32
5.6.00.0030.09020.32
5.5.380.0070.08320.34
5.5.370.0100.08020.30
5.5.360.0070.05320.35
5.5.350.0070.04020.32
5.5.340.0030.08720.87
5.5.330.0130.07320.68
5.5.320.0100.08320.82
5.5.310.0170.06320.87
5.5.300.0200.06720.73
5.5.290.0030.08320.75
5.5.280.0130.06320.71
5.5.270.0070.07320.88
5.5.260.0030.08720.84
5.5.250.0100.07720.64
5.5.240.0130.05720.07
5.5.230.0130.08020.09
5.5.220.0030.07320.16
5.5.210.0030.08720.26
5.5.200.0100.06320.23
5.5.190.0070.08020.14
5.5.180.0130.07020.18
5.5.160.0100.07720.19
5.5.150.0130.08020.20
5.5.140.0170.06720.13
5.5.130.0130.07720.12
5.5.120.0230.06020.21
5.5.110.0130.07720.18
5.5.100.0170.06320.09
5.5.90.0100.07720.00
5.5.80.0130.07720.10
5.5.70.0100.07720.04
5.5.60.0070.08019.95
5.5.50.0100.07320.04
5.5.40.0070.08020.09
5.5.30.0130.07020.03
5.5.20.0100.07320.07
5.5.10.0070.08720.04
5.5.00.0130.07319.98
5.4.450.0070.07019.31
5.4.440.0030.09019.39
5.4.430.0130.08019.38
5.4.420.0070.08319.11
5.4.410.0130.06019.14
5.4.400.0070.04019.16
5.4.390.0070.07319.04
5.4.380.0130.07718.84
5.4.370.0070.07718.83
5.4.360.0030.07719.06
5.4.350.0100.07319.00
5.4.340.0070.06719.05
5.4.320.0130.07319.18
5.4.310.0100.07719.03
5.4.300.0070.05018.89
5.4.290.0070.06018.91
5.4.280.0100.06719.00
5.4.270.0070.07018.94
5.4.260.0070.08318.96
5.4.250.0070.07318.88
5.4.240.0130.06718.98
5.4.230.0070.07718.96
5.4.220.0130.07318.92
5.4.210.0070.07718.79
5.4.200.0100.08019.05
5.4.190.0200.06718.93
5.4.180.0070.08018.98
5.4.170.0130.07318.83
5.4.160.0170.07318.98
5.4.150.0130.06719.04
5.4.140.0200.06016.32
5.4.130.0100.04716.36
5.4.120.0200.06016.34
5.4.110.0070.06716.32
5.4.100.0130.06316.39
5.4.90.0070.07016.48
5.4.80.0070.04016.37
5.4.70.0100.07016.32
5.4.60.0070.07316.29
5.4.50.0100.07316.30
5.4.40.0170.06716.46
5.4.30.0100.05316.42
5.4.20.0070.06316.28
5.4.10.0070.04016.38
5.4.00.0070.03015.67
5.3.290.0100.07014.59
5.3.280.0100.07714.66
5.3.270.0100.07314.67
5.3.260.0130.07014.56
5.3.250.0070.05714.65
5.3.240.0100.05314.73
5.3.230.0170.06014.71
5.3.220.0100.06314.63
5.3.210.0030.07314.71
5.3.200.0100.06714.69
5.3.190.0100.07314.70
5.3.180.0000.08014.66
5.3.170.0100.04714.57
5.3.160.0100.06714.70
5.3.150.0170.06714.57
5.3.140.0070.05014.58
5.3.130.0070.07714.51
5.3.120.0030.07014.49
5.3.110.0070.04314.68
5.3.100.0030.03713.99
5.3.90.0000.06014.09
5.3.80.0030.04314.03
5.3.70.0000.03714.06
5.3.60.0030.03314.10
5.3.50.0100.06313.89
5.3.40.0030.03713.88
5.3.30.0000.04013.84
5.3.20.0000.03713.63
5.3.10.0070.04313.56
5.3.00.0030.04313.71
5.2.170.0000.04012.20
5.2.160.0200.01712.20
5.2.150.0030.02712.20
5.2.140.0030.04012.20
5.2.130.0070.02312.20
5.2.120.0000.03012.20
5.2.110.0000.02712.20
5.2.100.0100.02012.20
5.2.90.0000.03312.20
5.2.80.0000.03012.20
5.2.70.0000.03012.20
5.2.60.0000.03012.20
5.2.50.0070.05012.20
5.2.40.0030.04712.20
5.2.30.0000.03012.20
5.2.20.0130.03312.20
5.2.10.0030.04012.20
5.2.00.0100.02312.20
5.1.60.0070.05012.20
5.1.50.0030.03312.20
5.1.40.0000.03712.20
5.1.30.0000.03712.20
5.1.20.0000.02712.20
5.1.10.0000.04012.20
5.1.00.0070.02312.20
5.0.50.0000.02312.20
5.0.40.0000.02012.20
5.0.30.0070.02712.20
5.0.20.0030.03012.20
5.0.10.0030.01712.20
5.0.00.0000.03012.20
4.4.90.0000.01312.20
4.4.80.0070.01012.20
4.4.70.0030.01712.20
4.4.60.0000.01712.20
4.4.50.0000.01712.20
4.4.40.0000.03712.20
4.4.30.0000.02712.20
4.4.20.0030.01012.20
4.4.10.0070.01012.20
4.4.00.0000.02712.20
4.3.110.0000.01712.20
4.3.100.0000.02312.20
4.3.90.0000.03312.20
4.3.80.0000.02312.20
4.3.70.0030.01012.20
4.3.60.0030.01312.20
4.3.50.0000.01712.20
4.3.40.0070.01712.20
4.3.30.0000.02012.20
4.3.20.0000.01312.20
4.3.10.0000.01712.20
4.3.00.0000.02012.20

preferences:
34.05 ms | 400 KiB | 5 Q