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 ( strstr( $keys[$i], $bad_char) !== false ) { var_dump(mb_substr("♥", 0, 3 ); var_dump(substr("♥", 0, 3 ); ($keys[$i]),$bad_char); 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)
5.4.320.0030.04612.52
5.4.310.0080.03412.50
5.4.300.0070.03612.51
5.4.290.0070.04112.51
5.4.280.0030.03812.41
5.4.270.0060.03612.40
5.4.260.0060.03712.41
5.4.250.0050.04212.41
5.4.240.0060.04412.41
5.4.230.0060.03812.40
5.4.220.0080.04512.40
5.4.210.0090.03412.40
5.4.200.0040.04212.40
5.4.190.0100.04012.39
5.4.180.0060.03712.39
5.4.170.0060.03612.40
5.4.160.0090.03312.39
5.4.150.0070.04212.39
5.4.140.0070.04012.08
5.4.130.0080.04012.07
5.4.120.0060.03912.03
5.4.110.0070.04712.03
5.4.100.0060.03512.03
5.4.90.0030.04012.03
5.4.80.0030.03912.03
5.4.70.0050.03812.02
5.4.60.0090.03212.02
5.4.50.0090.03912.02
5.4.40.0040.03612.01
5.4.30.0020.03912.01
5.4.20.0080.04512.00
5.4.10.0040.04512.01
5.4.00.0060.03711.50
5.3.290.0060.03912.80
5.3.280.0070.03812.71
5.3.270.0090.03812.72
5.3.260.0060.04012.72
5.3.250.0070.03712.72
5.3.240.0020.04112.72
5.3.230.0050.03912.71
5.3.220.0040.03812.68
5.3.210.0050.04112.68
5.3.200.0070.03512.68
5.3.190.0040.03812.68
5.3.180.0100.04912.67
5.3.170.0110.04712.67
5.3.160.0050.04412.67
5.3.150.0040.04012.68
5.3.140.0090.03412.66
5.3.130.0060.04212.66
5.3.120.0070.03812.66
5.3.110.0070.04012.66
5.3.100.0030.04112.12
5.3.90.0070.04412.10
5.3.80.0080.04212.09
5.3.70.0070.03912.09
5.3.60.0090.03512.07
5.3.50.0060.03912.02
5.3.40.0060.03812.03
5.3.30.0050.04011.99
5.3.20.0080.04311.76
5.3.10.0080.03911.73
5.3.00.0070.03511.72
5.2.170.0070.0349.22
5.2.160.0030.0329.22
5.2.150.0080.0329.22
5.2.140.0060.0319.21
5.2.130.0050.0309.18
5.2.120.0060.0279.18
5.2.110.0010.0329.18
5.2.100.0040.0299.18
5.2.90.0040.0309.18
5.2.80.0060.0309.18
5.2.70.0060.0299.17
5.2.60.0070.0289.13
5.2.50.0070.0279.09
5.2.40.0060.0309.07
5.2.30.0060.0289.05
5.2.20.0050.0289.04
5.2.10.0070.0308.94
5.2.00.0050.0288.81
5.1.60.0050.0268.09
5.1.50.0040.0258.09
5.1.40.0040.0248.07
5.1.30.0050.0268.41
5.1.20.0060.0248.44
5.1.10.0020.0278.16
5.1.00.0030.0278.16
5.0.50.0040.0206.65
5.0.40.0080.0166.50
5.0.30.0050.0306.31
5.0.20.0020.0206.28
5.0.10.0030.0206.25
5.0.00.0040.0306.25
4.4.90.0010.0174.78
4.4.80.0040.0134.75
4.4.70.0010.0224.76
4.4.60.0050.0134.75
4.4.50.0040.0144.77
4.4.40.0030.0254.71
4.4.30.0040.0174.76
4.4.20.0030.0154.84
4.4.10.0030.0154.85
4.4.00.0060.0214.76
4.3.110.0020.0164.67
4.3.100.0040.0134.66
4.3.90.0040.0134.63
4.3.80.0020.0244.58
4.3.70.0040.0144.63
4.3.60.0030.0144.63
4.3.50.0040.0144.63
4.3.40.0050.0234.54
4.3.30.0020.0163.30
4.3.20.0010.0173.28
4.3.10.0010.0163.24
4.3.00.0030.0207.12

preferences:
129.88 ms | 1394 KiB | 7 Q