3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "0"; echo "'0' is empty?",empty($a),"\n"; echo "'' == '0'?"; var_dump("" == "0"); echo "FALSE == "" and FALSE == '0'?"; var_dump(FALSE == ""); var_dump(FALSE == "0");

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)
5.4.280.0070.03512.36
5.4.270.0090.03512.36
5.4.260.0030.04312.36
5.4.250.0070.03812.36
5.4.240.0100.03912.36
5.4.230.0050.04012.35
5.4.220.0070.03612.36
5.4.210.0080.04412.35
5.4.200.0100.04912.35
5.4.190.0100.05312.35
5.4.180.0120.05312.35
5.4.170.0120.05212.36
5.4.160.0130.04112.35
5.4.150.0110.04312.35
5.4.140.0140.06512.04
5.4.130.0090.04612.02
5.4.120.0100.04111.98
5.4.110.0070.05011.99
5.4.100.0080.04611.98
5.4.90.0070.04911.98
5.4.80.0080.04911.98
5.4.70.0070.04811.98
5.4.60.0090.04311.98
5.4.50.0060.05011.98
5.4.40.0060.05111.96
5.4.30.0080.05011.96
5.4.20.0070.05311.96
5.4.10.0080.04811.96
5.4.00.0130.07911.46
5.3.280.0090.04912.71
5.3.270.0150.06612.72
5.3.260.0130.08412.72
5.3.250.0160.06012.72
5.3.240.0100.05912.71
5.3.230.0100.05812.71
5.3.220.0100.04812.68
5.3.210.0080.04912.68
5.3.200.0230.08412.68
5.3.190.0100.05312.68
5.3.180.0100.05312.67
5.3.170.0130.05812.67
5.3.160.0210.06712.67
5.3.150.0130.04812.67
5.3.140.0070.05012.66
5.3.130.0120.09612.66
5.3.120.0120.07512.66
5.3.110.0120.08012.66
5.3.100.0080.06212.12
5.3.90.0250.06512.08
5.3.80.0100.06012.08
5.3.70.0080.05312.07
5.3.60.0070.03612.07
5.3.50.0070.03712.00
5.3.40.0150.07212.00
5.3.30.0160.08511.93
5.3.20.0040.05211.72
5.3.10.0090.06711.67
5.3.00.0090.06111.66
5.2.170.0100.0489.16
5.2.160.0070.0499.16
5.2.150.0070.0489.16
5.2.140.0130.0399.15
5.2.130.0090.0499.11
5.2.120.0050.0319.11
5.2.110.0070.0389.12
5.2.100.0080.0419.11
5.2.90.0080.0309.11
5.2.80.0070.0359.11
5.2.70.0070.0459.11
5.2.60.0020.0449.06
5.2.50.0060.0469.03
5.2.40.0060.0329.01
5.2.30.0080.0408.99
5.2.20.0070.0388.97
5.2.10.0030.0438.90
5.2.00.0060.0528.76
5.1.60.0030.0268.05
5.1.50.0060.0258.05
5.1.40.0080.0298.03
5.1.30.0050.0398.38
5.1.20.0090.0378.39
5.1.10.0080.0318.12
5.1.00.0040.0468.13
5.0.50.0090.0416.59
5.0.40.0040.0316.46
5.0.30.0060.0436.27
5.0.20.0100.0406.25
5.0.10.0100.0356.22
5.0.00.0090.0486.20
4.4.90.0050.0254.78
4.4.80.0070.0224.76
4.4.70.0040.0244.76
4.4.60.0020.0224.75
4.4.50.0060.0214.77
4.4.40.0050.0354.71
4.4.30.0080.0464.76
4.4.20.0030.0234.84
4.4.10.0090.0304.85
4.4.00.0080.0514.76
4.3.110.0060.0304.66
4.3.100.0030.0244.66
4.3.90.0060.0184.63
4.3.80.0030.0294.59
4.3.70.0020.0224.63
4.3.60.0050.0164.63
4.3.50.0020.0254.63
4.3.40.0070.0294.54
4.3.30.0020.0213.27
4.3.20.0030.0223.25
4.3.10.0040.0233.21
4.3.00.0070.01313.43

preferences:
169.97 ms | 1398 KiB | 7 Q