3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test{ const AB♥ = "alphabet"; } $rc = new ReflectionClass("Test"); $const = array_keys( $rc->getConstants())[0]; // $substr = substr( $const, -1,1 ); $substr = mb_substr( $const, -1,1 ); // PHP 5.6 if ( $substr === "♥" ) { trigger_error("\"♥\" in \"$const\"" E_USER_ERROR ); } // Notice: "♥" in "AB ♥" …

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)
5.4.320.0070.03612.51
5.4.310.0020.04112.51
5.4.300.0100.04412.51
5.4.290.0050.03712.51
5.4.280.0050.03512.41
5.4.270.0030.03812.41
5.4.260.0070.03512.41
5.4.250.0030.03912.41
5.4.240.0060.03512.40
5.4.230.0090.03512.40
5.4.220.0090.03212.39
5.4.210.0050.03512.40
5.4.200.0050.03812.40
5.4.190.0050.03712.39
5.4.180.0060.03512.39
5.4.170.0050.03612.40
5.4.160.0060.04012.40
5.4.150.0070.03512.39
5.4.140.0050.03712.08
5.4.130.0040.03512.07
5.4.120.0070.03212.03
5.4.110.0030.04212.03
5.4.100.0060.03512.03
5.4.90.0080.04112.02
5.4.80.0070.05112.02
5.4.70.0050.03812.02
5.4.60.0060.03412.02
5.4.50.0060.03412.02
5.4.40.0050.03412.01
5.4.30.0050.03412.01
5.4.20.0090.03612.01
5.4.10.0050.03612.01
5.4.00.0060.04211.50
5.3.290.0040.04012.80
5.3.280.0010.04112.71
5.3.270.0090.04612.72
5.3.260.0060.04612.72
5.3.250.0120.04612.72
5.3.240.0050.03912.72
5.3.230.0070.03712.71
5.3.220.0060.03912.68
5.3.210.0070.03912.68
5.3.200.0050.03912.68
5.3.190.0080.04512.67
5.3.180.0100.04812.68
5.3.170.0110.03512.67
5.3.160.0050.03712.67
5.3.150.0070.03512.67
5.3.140.0070.04012.66
5.3.130.0070.03612.66
5.3.120.0070.03612.66
5.3.110.0050.03912.66
5.3.100.0050.03712.12
5.3.90.0080.03412.10
5.3.80.0030.03912.09
5.3.70.0090.03312.09
5.3.60.0070.04012.08
5.3.50.0080.03312.02
5.3.40.0090.03212.03
5.3.30.0100.03511.98
5.3.20.0050.04011.76
5.3.10.0080.03311.73
5.3.00.0070.04311.72
5.2.170.0040.0319.22
5.2.160.0060.0289.22
5.2.150.0060.0289.22
5.2.140.0050.0299.22
5.2.130.0050.0279.18
5.2.120.0060.0269.18
5.2.110.0060.0279.18
5.2.100.0070.0259.17
5.2.90.0030.0309.17
5.2.80.0020.0339.17
5.2.70.0040.0309.17
5.2.60.0050.0299.13
5.2.50.0060.0289.09
5.2.40.0070.0269.07
5.2.30.0080.0369.05
5.2.20.0040.0299.03
5.2.10.0050.0288.94
5.2.00.0030.0308.80
5.1.60.0020.0348.09
5.1.50.0040.0248.08
5.1.40.0050.0238.06
5.1.30.0050.0258.42
5.1.20.0040.0268.43
5.1.10.0030.0268.17
5.1.00.0020.0288.16
5.0.50.0050.0186.64
5.0.40.0030.0196.50
5.0.30.0040.0306.31
5.0.20.0020.0206.27
5.0.10.0030.0246.26
5.0.00.0030.0296.25
4.4.90.0040.0304.78
4.4.80.0030.0164.75
4.4.70.0030.0164.75
4.4.60.0030.0164.75
4.4.50.0050.0184.77
4.4.40.0040.0234.71
4.4.30.0050.0144.75
4.4.20.0040.0174.84
4.4.10.0050.0134.84
4.4.00.0040.0234.76
4.3.110.0030.0174.67
4.3.100.0030.0144.66
4.3.90.0020.0154.63
4.3.80.0030.0234.59
4.3.70.0030.0254.63
4.3.60.0010.0164.63
4.3.50.0030.0154.63
4.3.40.0030.0234.54
4.3.30.0020.0243.30
4.3.20.0050.0213.28
4.3.10.0020.0163.23
4.3.00.0100.0277.12

preferences:
138.98 ms | 1394 KiB | 7 Q