3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "♫"; $len mb_strlen($string, '8bit'); for($i=0;$i<$len;++$i) echo mb_substr($str, $i, 1, 'UTF-8')."<br/>"

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)
5.4.280.0060.05112.36
5.4.270.0100.05012.36
5.4.260.0170.07112.36
5.4.250.0140.07812.36
5.4.240.0160.07912.36
5.4.230.0080.05512.35
5.4.220.0210.07712.35
5.4.210.0070.06412.35
5.4.200.0100.06512.36
5.4.190.0110.05412.35
5.4.180.0050.06412.35
5.4.170.0110.05212.36
5.4.160.0090.05512.36
5.4.150.0080.05512.35
5.4.140.0060.06012.04
5.4.130.0100.04712.02
5.4.120.0050.05311.98
5.4.110.0060.05111.98
5.4.100.0080.05011.99
5.4.90.0070.05811.98
5.4.80.0090.05511.98
5.4.70.0070.06411.98
5.4.60.0120.03511.98
5.4.50.0170.03111.98
5.4.40.0120.04411.97
5.4.30.0090.04611.96
5.4.20.0080.04611.96
5.4.10.0170.03911.96
5.4.00.0120.04211.46
5.3.280.0090.04412.71
5.3.270.0080.05112.73
5.3.260.0060.06412.72
5.3.250.0090.06112.72
5.3.240.0110.05612.72
5.3.230.0090.04212.71
5.3.220.0130.04412.68
5.3.210.0100.05312.68
5.3.200.0090.04112.68
5.3.190.0110.05612.68
5.3.180.0070.04212.67
5.3.170.0120.03612.67
5.3.160.0100.04012.67
5.3.150.0080.03812.68
5.3.140.0100.03912.66
5.3.130.0090.04812.66
5.3.120.0140.04912.66
5.3.110.0100.04612.66
5.3.100.0090.04512.12
5.3.90.0090.04412.08
5.3.80.0080.04412.08
5.3.70.0120.04512.08
5.3.60.0130.04412.06
5.3.50.0090.04512.00
5.3.40.0120.06412.00
5.3.30.0080.05511.94
5.3.20.0120.04911.70
5.3.10.0080.05311.67
5.3.00.0110.04611.66
5.2.170.0090.0319.15
5.2.160.0100.0369.15
5.2.150.0080.0439.15
5.2.140.0090.0429.14
5.2.130.0060.0429.11
5.2.120.0090.0389.11
5.2.110.0090.0369.11
5.2.100.0080.0409.12
5.2.90.0080.0769.11
5.2.80.0140.0429.11
5.2.70.0080.0599.11
5.2.60.0130.0669.06
5.2.50.0120.0459.03
5.2.40.0140.0579.00
5.2.30.0150.0738.98
5.2.20.0100.0838.97
5.2.10.0150.0568.90
5.2.00.0080.0298.76
5.1.60.0030.0288.04
5.1.50.0060.0318.04
5.1.40.0080.0248.03
5.1.30.0070.0338.38
5.1.20.0110.0418.40
5.1.10.0110.0348.13
5.1.00.0090.0468.12
5.0.50.0020.0316.60
5.0.40.0050.0256.46
5.0.30.0050.0416.27
5.0.20.0080.0356.25
5.0.10.0040.0286.22
5.0.00.0030.0466.21
4.4.90.0060.0224.78
4.4.80.0080.0414.75
4.4.70.0020.0224.76
4.4.60.0040.0194.75
4.4.50.0040.0404.77
4.4.40.0020.0324.71
4.4.30.0030.0224.76
4.4.20.0050.0214.84
4.4.10.0050.0234.84
4.4.00.0030.0284.75
4.3.110.0080.0204.67
4.3.100.0040.0234.66
4.3.90.0010.0244.63
4.3.80.0040.0354.58
4.3.70.0060.0354.63
4.3.60.0040.0234.63
4.3.50.0050.0144.63
4.3.40.0060.0334.54
4.3.30.0040.0233.27
4.3.20.0030.0183.25
4.3.10.0060.0263.22
4.3.00.0030.02310.37

preferences:
163.67 ms | 1394 KiB | 7 Q