3v4l.org

run code in 500+ PHP versions simultaneously
<?php var_dump( 0<0 ); #bool(false) var_dump( 1<0 ); #bool(false) var_dump( -1<0 ); #bool(true) var_dump( false<0 ); #bool(false) var_dump( null<0 ); #bool(false) var_dump( ''<0 ); #bool(false) var_dump( 'a'<0 ); #bool(false) echo "\n"; var_dump( !0 ); #bool(true) var_dump( !1 ); #bool(false) var_dump( !-1 ); #bool(false) var_dump( !false ); #bool(true) var_dump( !null ); #bool(true) var_dump( !'' ); #bool(true) var_dump( !'a' ); #bool(false) echo "\n"; var_dump( false == 0 ); #bool(true) var_dump( false == 1 ); #bool(false) var_dump( false == -1 ); #bool(false) var_dump( false == false ); #bool(true) var_dump( false == null ); #bool(true) var_dump( false == '' ); #bool(true) var_dump( false == 'a' ); #bool(false) echo "\n"; var_dump( null == 0 ); #bool(true) var_dump( null == 1 ); #bool(false) var_dump( null == -1 ); #bool(false) var_dump( null == false ); #bool(true) var_dump( null == null ); #bool(true) var_dump( null == '' ); #bool(true) var_dump( null == 'a' ); #bool(false) echo "\n"; $a=0; var_dump( empty($a) ); #bool(true) $a=1; var_dump( empty($a) ); #bool(false) $a=-1; var_dump( empty($a) ); #bool(false) $a=false; var_dump( empty($a) ); #bool(true) $a=null; var_dump( empty($a) ); #bool(true) $a=''; var_dump( empty($a) ); #bool(true) $a='a'; var_dump( empty($a)); # bool(false) echo "\n"; #new block suggested by @thehpi var_dump( null < -1 ); #bool(true) var_dump( null < 0 ); #bool(false) var_dump( null < 1 ); #bool(true) var_dump( -1 > true ); #bool(false) var_dump( 0 > true ); #bool(false) var_dump( 1 > true ); #bool(true) var_dump( -1 > false ); #bool(true) var_dump( 0 > false ); #bool(false) var_dump( 1 > true ); #bool(true)

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)
8.5.30.0090.00917.39
8.5.20.0110.00619.69
8.5.10.0070.00216.61
8.5.00.0120.00919.73
8.4.180.0140.00919.68
8.4.170.0110.01220.36
8.4.160.0100.01123.81
8.4.150.0090.00416.80
8.4.140.0100.01217.67
8.4.130.0070.00417.96
8.4.120.0090.01020.84
8.4.110.0110.01018.85
8.4.100.0060.00218.00
8.4.90.0140.00720.60
8.4.80.0120.00820.73
8.4.70.0040.00519.14
8.4.60.0120.00920.43
8.4.50.0100.00720.64
8.4.40.0060.01317.58
8.4.30.0090.00917.60
8.4.20.0130.00319.41
8.4.10.0140.00717.68
8.3.300.0130.00920.88
8.3.290.0180.00520.91
8.3.280.0090.01218.25
8.3.270.0140.00716.50
8.3.260.0090.00916.51
8.3.250.0130.00718.99
8.3.240.0110.00816.37
8.3.230.0130.00716.38
8.3.220.0090.00919.05
8.3.210.0100.00116.47
8.3.200.0060.00316.42
8.3.190.0110.00817.03
8.3.180.0120.00616.86
8.3.170.0150.00417.14
8.3.160.0150.00420.58
8.3.150.0120.00619.14
8.3.140.0060.01216.33
8.3.130.0030.00618.53
8.3.120.0060.00320.79
8.3.110.0100.01016.37
8.3.100.0140.00716.53
8.3.90.0150.00318.04
8.3.80.0090.00018.43
8.3.70.0070.01416.50
8.3.60.0100.01016.63
8.3.50.0100.00316.46
8.3.40.0090.00618.77
8.3.30.0160.00018.73
8.3.20.0050.00221.76
8.3.10.0050.00323.71
8.3.00.0110.00719.12
8.2.300.0110.00918.79
8.2.290.0120.00717.15
8.2.280.0120.00718.48
8.2.270.0100.00316.93
8.2.260.0070.01020.58
8.2.250.0170.00316.51
8.2.240.0000.00818.92
8.2.230.0080.00020.94
8.2.220.0030.00624.06
8.2.210.0040.01126.77
8.2.200.0060.00316.75
8.2.190.0110.00416.62
8.2.180.0110.01116.38
8.2.170.0070.00722.96
8.2.160.0090.00620.50
8.2.150.0080.00024.18
8.2.140.0100.01024.66
8.2.130.0040.00426.16
8.2.120.0030.00619.64
8.2.110.0030.00720.97
8.2.100.0040.00717.72
8.2.90.0050.00319.13
8.2.80.0040.00417.97
8.2.70.0080.00018.03
8.2.60.0040.00418.03
8.2.50.0000.00817.63
8.2.40.0040.00419.35
8.2.30.0070.00017.73
8.2.20.0050.00218.09
8.2.10.0000.00717.91
8.2.00.0050.00218.11
8.1.340.0130.00619.82
8.1.330.0110.00816.40
8.1.320.0130.00616.33
8.1.310.0030.01018.52
8.1.300.0040.00420.04
8.1.290.0030.00618.88
8.1.280.0120.00325.92
8.1.270.0040.00420.25
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0110.00021.31
8.1.230.0110.00019.10
8.1.220.0080.00017.74
8.1.210.0040.00418.77
8.1.200.0100.00017.23
8.1.190.0030.00517.11
8.1.180.0040.00418.10
8.1.170.0040.00417.62
8.1.160.0000.00818.76
8.1.150.0030.00519.06
8.1.140.0040.00417.58
8.1.130.0000.00720.29
8.1.120.0070.00017.44
8.1.110.0040.00417.32
8.1.100.0050.00217.38
8.1.90.0040.00417.32
8.1.80.0060.00317.44
8.1.70.0030.00317.46
8.1.60.0000.00917.60
8.1.50.0050.00317.52
8.1.40.0080.00017.38
8.1.30.0000.00817.63
8.1.20.0000.00717.50
8.1.10.0040.00417.44
8.1.00.0000.00817.53
8.0.300.0070.00019.73
8.0.290.0090.00016.63
8.0.280.0040.00418.11
8.0.270.0040.00418.03
8.0.260.0060.00316.89
8.0.250.0070.00316.85
8.0.240.0000.00816.90
8.0.230.0030.00316.82
8.0.220.0000.00716.77
8.0.210.0000.00716.79
8.0.200.0110.00016.91
8.0.190.0040.00416.88
8.0.180.0030.00416.84
8.0.170.0030.00616.89
8.0.160.0030.00616.82
8.0.150.0070.00016.86
8.0.140.0040.00416.82
8.0.130.0030.00313.30
8.0.120.0000.00716.85
8.0.110.0040.00416.64
8.0.100.0040.00416.82
8.0.90.0040.00416.91
8.0.80.0100.00716.77
8.0.70.0040.00416.82
8.0.60.0050.00316.70
8.0.50.0030.00516.85
8.0.30.0130.00517.15
8.0.20.0110.00917.40
8.0.10.0000.00816.87
8.0.00.0100.00816.73
7.4.330.0000.00515.55
7.4.320.0000.00616.62
7.4.300.0060.00016.47
7.4.290.0040.00416.47
7.4.280.0030.00516.51
7.4.270.0040.00416.48
7.4.260.0070.00016.36
7.4.250.0040.00416.34
7.4.240.0070.00016.45
7.4.230.0000.00716.65
7.4.220.0040.00416.47
7.4.210.0090.00816.54
7.4.200.0000.00716.37
7.4.160.0060.01116.45
7.4.140.0080.01217.86
7.4.130.0130.00616.37
7.4.120.0090.01116.48
7.4.110.0100.00616.45
7.4.100.0120.01216.36
7.4.90.0130.01216.47
7.4.80.0150.00919.39
7.4.70.0000.01616.47
7.4.60.0070.01016.61
7.4.50.0000.01116.59
7.4.40.0070.01016.66
7.4.00.0060.00915.10
7.3.330.0000.00512.91
7.3.320.0050.00212.92
7.3.310.0000.00816.05
7.3.300.0000.00716.17
7.3.290.0030.00316.05
7.3.280.0060.01316.24
7.3.260.0090.01316.30
7.3.240.0090.01016.38
7.3.230.0100.00716.22
7.3.210.0130.00316.17
7.3.200.0140.00316.52
7.3.190.0120.00316.48
7.3.180.0110.00716.32
7.3.170.0040.01716.25
7.3.160.0090.00916.45
7.2.330.0100.01016.71
7.2.320.0100.00616.68
7.2.310.0140.00416.55
7.2.300.0180.00616.59
7.2.290.0000.01816.70
7.2.60.0000.01416.87
7.2.50.0030.01016.54
7.2.40.0540.01217.88
7.2.30.0680.01417.81
7.2.20.0290.01317.68
7.2.10.0550.01317.69
7.2.00.0530.01417.56
7.1.200.0040.00415.58
7.1.160.0550.01716.65
7.1.150.0590.01416.59
7.1.140.0680.01416.67
7.1.130.0460.01116.51
7.1.120.0550.01216.29
7.1.110.0590.00815.72
7.1.100.0600.01416.13
7.1.90.0630.01415.94
7.1.80.0600.01016.08
7.1.70.0630.00815.20
7.1.60.0840.01333.23
7.1.50.0910.01632.82
7.1.40.0960.01932.38
7.1.30.0810.01232.57
7.1.20.0910.01432.75
7.1.10.0590.01014.55
7.1.00.0440.01114.80

preferences:
110.81 ms | 1522 KiB | 5 Q