3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test{ const ABC♥ = "alphabet"; } $class = new ReflectionClass("Test"); $bad_char = "♥"; $constants = $class->getConstants(); $keys = array_keys($constants); for ( $i=0, $ct=count($keys); $i < $ct; $i++) { $target = $keys[ $i ]; if ( strpos( $target, $bad_char) !== false ) { var_dump(substr($bad_char,0,1); var_dump(mb_substr($bad_char,0,1); trigger_error( "'$bad_char' in '$target'" ); }}

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)
5.4.320.0080.05212.52
5.4.310.0120.04912.51
5.4.300.0130.04512.51
5.4.290.0110.04712.51
5.4.280.0080.04412.41
5.4.270.0060.04612.40
5.4.260.0090.04512.41
5.4.250.0070.04612.41
5.4.240.0070.03712.41
5.4.230.0060.05212.39
5.4.220.0060.03912.39
5.4.210.0070.03512.39
5.4.200.0020.04312.40
5.4.190.0100.03412.39
5.4.180.0060.03712.39
5.4.170.0080.03412.40
5.4.160.0070.03512.39
5.4.150.0090.03312.39
5.4.140.0090.04312.08
5.4.130.0050.04312.06
5.4.120.0080.03612.03
5.4.110.0050.03712.02
5.4.100.0060.03612.02
5.4.90.0070.04012.03
5.4.80.0080.04412.03
5.4.70.0120.03712.02
5.4.60.0100.04112.02
5.4.50.0070.04412.02
5.4.40.0100.03912.01
5.4.30.0080.04412.01
5.4.20.0110.04212.00
5.4.10.0060.04612.00
5.4.00.0080.03811.50
5.3.290.0080.03912.80
5.3.280.0040.04412.71
5.3.270.0040.04112.72
5.3.260.0050.04012.72
5.3.250.0050.03912.72
5.3.240.0040.03812.72
5.3.230.0070.04912.71
5.3.220.0070.04412.68
5.3.210.0040.05112.68
5.3.200.0120.04212.68
5.3.190.0050.04012.68
5.3.180.0050.03812.67
5.3.170.0080.03512.67
5.3.160.0070.03912.67
5.3.150.0110.04212.67
5.3.140.0050.04412.66
5.3.130.0070.04712.66
5.3.120.0070.04312.66
5.3.110.0060.03912.66
5.3.100.0100.03312.11
5.3.90.0050.03812.10
5.3.80.0040.03812.09
5.3.70.0060.03812.09
5.3.60.0060.03712.08
5.3.50.0070.03612.02
5.3.40.0070.03712.03
5.3.30.0110.04311.98
5.3.20.0040.03811.76
5.3.10.0070.03511.73
5.3.00.0050.03811.72
5.2.170.0030.0369.22
5.2.160.0040.0329.22
5.2.150.0070.0299.22
5.2.140.0090.0389.21
5.2.130.0050.0439.18
5.2.120.0080.0379.18
5.2.110.0040.0329.19
5.2.100.0060.0279.18
5.2.90.0070.0329.18
5.2.80.0080.0359.17
5.2.70.0060.0369.17
5.2.60.0040.0309.13
5.2.50.0060.0309.10
5.2.40.0040.0309.07
5.2.30.0040.0369.05
5.2.20.0060.0319.04
5.2.10.0070.0318.94
5.2.00.0070.0308.81
5.1.60.0080.0268.09
5.1.50.0060.0308.09
5.1.40.0060.0258.07
5.1.30.0060.0268.42
5.1.20.0060.0308.44
5.1.10.0070.0248.16
5.1.00.0040.0308.17
5.0.50.0040.0276.64
5.0.40.0030.0316.50
5.0.30.0030.0406.32
5.0.20.0030.0206.28
5.0.10.0050.0196.25
5.0.00.0070.0286.25
4.4.90.0030.0204.77
4.4.80.0030.0154.75
4.4.70.0070.0134.76
4.4.60.0050.0144.76
4.4.50.0040.0204.77
4.4.40.0030.0284.71
4.4.30.0050.0144.76
4.4.20.0030.0174.84
4.4.10.0010.0214.85
4.4.00.0040.0274.76
4.3.110.0030.0154.67
4.3.100.0030.0154.67
4.3.90.0030.0154.63
4.3.80.0040.0234.58
4.3.70.0020.0164.63
4.3.60.0030.0144.63
4.3.50.0020.0164.63
4.3.40.0030.0254.54
4.3.30.0010.0173.30
4.3.20.0020.0173.28
4.3.10.0030.0153.24
4.3.00.0000.0277.12

preferences:
145.84 ms | 1394 KiB | 7 Q