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++) { if ( strpos( $keys[$i], $bad_char) !== false ) { var_dump(mb_substr("♥", 0, 3 ); var_dump(substr("♥", 0, 3 ); trigger_error( "'$bad_char' in '$keys[$i]" ); }} // Notice: '♥' in 'ABC ♥' in …

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)
5.4.320.0070.03712.51
5.4.310.0060.04512.50
5.4.300.0060.04212.51
5.4.290.0060.04812.51
5.4.280.0050.04012.40
5.4.270.0070.04812.40
5.4.260.0080.04312.41
5.4.250.0060.04012.41
5.4.240.0060.04812.41
5.4.230.0120.03512.39
5.4.220.0060.03912.39
5.4.210.0070.04012.39
5.4.200.0110.04112.39
5.4.190.0100.03512.39
5.4.180.0050.03812.39
5.4.170.0050.03912.40
5.4.160.0080.03812.39
5.4.150.0060.03512.39
5.4.140.0080.03812.08
5.4.130.0040.04012.06
5.4.120.0120.03412.03
5.4.110.0120.04312.03
5.4.100.0060.03712.03
5.4.90.0070.03612.03
5.4.80.0080.03512.03
5.4.70.0110.04112.02
5.4.60.0100.04712.02
5.4.50.0070.04112.02
5.4.40.0080.03512.01
5.4.30.0060.03512.01
5.4.20.0030.03812.00
5.4.10.0060.03612.01
5.4.00.0080.03611.50
5.3.290.0090.05512.80
5.3.280.0070.05212.71
5.3.270.0090.05412.73
5.3.260.0090.05412.72
5.3.250.0060.05312.72
5.3.240.0070.03612.72
5.3.230.0070.05112.71
5.3.220.0140.04312.68
5.3.210.0130.05512.68
5.3.200.0100.04612.68
5.3.190.0070.04612.68
5.3.180.0080.05212.67
5.3.170.0080.05312.67
5.3.160.0060.04212.67
5.3.150.0100.04212.68
5.3.140.0100.03912.66
5.3.130.0080.03812.66
5.3.120.0050.03912.66
5.3.110.0110.04612.66
5.3.100.0070.04312.12
5.3.90.0080.03812.10
5.3.80.0070.03512.09
5.3.70.0050.03712.09
5.3.60.0040.03812.08
5.3.50.0080.03612.03
5.3.40.0050.04812.03
5.3.30.0090.04411.98
5.3.20.0050.03711.76
5.3.10.0060.03611.73
5.3.00.0070.03911.72
5.2.170.0080.0419.22
5.2.160.0060.0369.22
5.2.150.0050.0389.23
5.2.140.0050.0319.21
5.2.130.0050.0299.18
5.2.120.0060.0269.18
5.2.110.0040.0309.18
5.2.100.0090.0289.18
5.2.90.0060.0339.18
5.2.80.0050.0309.17
5.2.70.0030.0329.17
5.2.60.0080.0279.12
5.2.50.0030.0329.09
5.2.40.0040.0299.07
5.2.30.0100.0279.05
5.2.20.0040.0299.04
5.2.10.0070.0258.95
5.2.00.0030.0308.81
5.1.60.0040.0258.09
5.1.50.0080.0328.09
5.1.40.0070.0338.07
5.1.30.0040.0398.42
5.1.20.0070.0268.44
5.1.10.0040.0318.16
5.1.00.0040.0278.16
5.0.50.0070.0286.64
5.0.40.0050.0196.50
5.0.30.0040.0316.32
5.0.20.0080.0156.28
5.0.10.0050.0226.25
5.0.00.0070.0366.25
4.4.90.0030.0224.78
4.4.80.0040.0144.76
4.4.70.0070.0174.76
4.4.60.0060.0194.75
4.4.50.0030.0204.77
4.4.40.0060.0324.71
4.4.30.0050.0204.76
4.4.20.0010.0204.84
4.4.10.0030.0224.84
4.4.00.0040.0294.76
4.3.110.0020.0174.67
4.3.100.0030.0164.66
4.3.90.0030.0144.63
4.3.80.0070.0214.58
4.3.70.0030.0144.63
4.3.60.0040.0214.63
4.3.50.0030.0234.63
4.3.40.0020.0244.54
4.3.30.0050.0153.30
4.3.20.0010.0183.28
4.3.10.0020.0163.24
4.3.00.0030.0207.12

preferences:
142.35 ms | 1394 KiB | 7 Q