3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var1 = 'ccc'; $var2 = $var1; debug_zval_dump(&$var1, &$var2); echo "===========\n"; $var2 .= 'xxx'; debug_zval_dump(&$var1, &$var2);

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)
5.4.320.0070.03712.46
5.4.310.0050.04112.46
5.4.300.0080.03512.46
5.4.290.0080.03712.46
5.4.280.0090.03312.36
5.4.270.0050.04112.36
5.4.260.0040.04212.36
5.4.250.0070.03812.36
5.4.240.0060.03612.36
5.4.230.0100.04812.35
5.4.220.0060.03512.35
5.4.210.0070.03912.35
5.4.200.0040.04012.35
5.4.190.0090.03412.35
5.4.180.0100.03912.35
5.4.170.0080.03712.36
5.4.160.0090.03412.35
5.4.150.0070.03812.35
5.4.140.0030.04712.04
5.4.130.0090.03312.02
5.4.120.0060.03511.98
5.4.110.0090.03411.97
5.4.100.0070.03511.98
5.4.90.0050.03911.98
5.4.80.0060.03611.97
5.4.70.0120.03911.97
5.4.60.0040.03811.98
5.4.50.0060.03711.97
5.4.40.0080.03611.96
5.4.30.0090.04011.95
5.4.20.0110.03711.96
5.4.10.0110.03411.95
5.4.00.0060.04011.45
5.3.290.0080.04812.80
5.3.280.0110.04912.71
5.3.270.0110.03912.73
5.3.260.0040.04112.72
5.3.250.0080.03612.72
5.3.240.0080.05312.71
5.3.230.0060.05112.71
5.3.220.0070.03712.68
5.3.210.0060.04212.68
5.3.200.0140.05312.68
5.3.190.0040.04312.68
5.3.180.0050.03912.67
5.3.170.0070.03712.67
5.3.160.0070.03912.67
5.3.150.0060.03812.67
5.3.140.0100.03312.66
5.3.130.0080.04112.66
5.3.120.0080.04012.66
5.3.110.0070.03712.66
5.3.100.0040.03912.12
5.3.90.0070.03612.09
5.3.80.0060.04012.07
5.3.70.0080.03412.07
5.3.60.0090.03612.07
5.3.50.0070.03512.00
5.3.40.0070.03612.00
5.3.30.0060.03611.94
5.3.20.0060.03511.71
5.3.10.0060.03511.69
5.3.00.0040.03911.68
5.2.170.0060.0319.18
5.2.160.0100.0309.18
5.2.150.0050.0309.18
5.2.140.0080.0359.17
5.2.130.0060.0279.14
5.2.120.0070.0309.14
5.2.110.0040.0309.14
5.2.100.0030.0319.14
5.2.90.0020.0349.14
5.2.80.0060.0309.13
5.2.70.0050.0309.13
5.2.60.0020.0349.09
5.2.50.0050.0329.06
5.2.40.0050.0299.04
5.2.30.0040.0309.00
5.2.20.0050.0348.99
5.2.10.0060.0278.92
5.2.00.0060.0298.78
5.1.60.0040.0268.07
5.1.50.0040.0298.06
5.1.40.0010.0288.04
5.1.30.0050.0258.39
5.1.20.0060.0318.42
5.1.10.0070.0238.14
5.1.00.0060.0248.14
5.0.50.0040.0226.62
5.0.40.0030.0206.47
5.0.30.0030.0316.29
5.0.20.0070.0226.25
5.0.10.0020.0256.24
5.0.00.0020.0396.23
4.4.90.0030.0164.78
4.4.80.0040.0144.76
4.4.70.0020.0164.75
4.4.60.0030.0164.75
4.4.50.0010.0174.77
4.4.40.0040.0284.71
4.4.30.0030.0174.76
4.4.20.0030.0174.84
4.4.10.0050.0144.85
4.4.00.0020.0274.75
4.3.110.0020.0184.67
4.3.100.0050.0174.67
4.3.90.0030.0164.63
4.3.80.0020.0264.59
4.3.70.0040.0134.63
4.3.60.0050.0134.62
4.3.50.0020.0174.63
4.3.40.0030.0264.54
4.3.30.0010.0193.28
4.3.20.0010.0183.26
4.3.10.0050.0143.22
4.3.00.0270.01716.04

preferences:
143.84 ms | 1394 KiB | 7 Q