3v4l.org

run code in 300+ PHP versions simultaneously
<?php function cmp(& $reference, & $value) { $tmp = & $reference; $reference = uniqid(mt_rand()); $isReference = ($value === $reference); $reference = & $tmp; return $isReference; } $value = uniqid(); $reference = & $value; var_dump(cmp($reference, $value)); $value = new \exception(); var_dump(cmp($reference, $value)); var_dump(cmp($reference, $value = new \exception()));

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)
7.4.00.0060.01314.78
7.3.120.0040.01114.59
7.3.110.0090.00915.00
7.3.100.0090.00614.87
7.3.90.0040.01414.78
7.3.80.0040.00815.08
7.3.70.0000.00914.94
7.3.60.0040.01214.89
7.3.50.0100.00714.82
7.3.40.0090.00314.87
7.3.30.0070.00714.71
7.3.20.0100.00716.32
7.3.10.0100.00716.69
7.3.00.0040.01016.32
7.2.250.0130.00415.07
7.2.240.0000.01515.11
7.2.230.0160.00014.86
7.2.220.0070.00414.53
7.2.210.0000.01414.65
7.2.200.0040.00715.08
7.2.190.0000.01414.90
7.2.180.0130.00715.05
7.2.170.0060.00915.00
7.2.130.0040.01116.80
7.2.120.0030.01316.68
7.2.110.0150.00016.91
7.2.100.0080.00416.88
7.2.90.0000.01416.85
7.2.80.0100.00016.65
7.2.70.0140.00016.89
7.2.60.0040.01216.75
7.2.50.0080.00416.75
7.2.40.0070.01116.73
7.2.30.0060.01016.67
7.2.20.0070.01116.80
7.2.10.0030.00716.84
7.2.00.0040.01118.03
7.1.330.0030.01015.80
7.1.320.0060.00615.75
7.1.310.0060.00615.57
7.1.300.0040.00415.81
7.1.290.0090.00915.76
7.1.280.0090.00615.54
7.1.270.0000.00915.79
7.1.260.0030.01415.89
7.1.250.0000.01415.62
7.1.70.0030.00616.95
7.1.60.0140.00719.57
7.1.50.0060.01616.77
7.1.00.0000.08022.30
7.0.200.0100.00016.63
7.0.140.0100.07322.08
7.0.110.0130.08020.05
7.0.100.0170.07720.07
7.0.90.0130.08020.06
7.0.80.0170.07319.90
7.0.70.0200.06019.87
7.0.60.0100.03719.89
7.0.50.0130.03319.95
7.0.40.0070.04019.71
7.0.30.0030.03719.84
7.0.20.0070.07319.59
7.0.10.0070.03319.65
7.0.00.0100.06019.73
5.6.280.0030.07021.02
5.6.260.0070.07320.72
5.6.250.0070.08020.73
5.6.240.0170.07020.67
5.6.230.0070.07320.64
5.6.220.0070.06720.70
5.6.210.0070.03720.63
5.6.200.0030.04020.62
5.6.190.0070.04020.86
5.6.180.0070.04020.66
5.6.170.0030.05020.51
5.6.160.0100.03020.62
5.6.150.0100.06020.63
5.6.140.0000.04320.60
5.6.130.0100.07320.56
5.6.120.0000.05320.85
5.6.110.0070.04320.55
5.6.100.0000.05720.60
5.6.90.0100.07320.45
5.6.80.0030.06020.09
5.6.70.0070.06020.20
5.6.60.0100.03320.02
5.6.50.0100.06020.05
5.6.40.0030.04019.98
5.6.30.0000.04319.92
5.6.20.0070.03719.82
5.6.10.0030.03319.91
5.6.00.0070.03720.00
5.5.380.0130.06317.57
5.5.370.0030.08017.68
5.5.360.0070.03317.69
5.5.350.0070.06717.66
5.5.340.0030.04018.23
5.5.330.0000.04317.92
5.5.320.0030.04318.23
5.5.310.0070.05718.25
5.5.300.0030.04318.09
5.5.290.0030.04017.93
5.5.280.0070.03317.83
5.5.270.0000.04718.13
5.5.260.0030.04018.26
5.5.250.0030.04018.07
5.5.240.0000.04317.63
5.5.230.0030.04017.48
5.5.220.0030.04717.21
5.5.210.0100.03017.53
5.5.200.0000.04017.27
5.5.190.0070.04317.43
5.5.180.0100.03317.61
5.5.160.0030.03717.47
5.5.150.0030.03317.48
5.5.140.0070.04017.47
5.5.130.0000.04017.28
5.5.120.0000.04017.24
5.5.110.0100.06017.44
5.5.100.0070.03317.48
5.5.90.0000.04317.18
5.5.80.0070.03317.34
5.5.70.0100.07017.32
5.5.60.0000.04317.31
5.5.50.0030.05317.17
5.5.40.0030.06717.46
5.5.30.0070.03317.37
5.5.20.0070.03317.31
5.5.10.0100.03017.14
5.5.00.0030.07717.19
5.4.450.0000.04319.35
5.4.440.0030.05019.55
5.4.430.0070.03319.48
5.4.420.0030.03719.32
5.4.410.0000.04019.45
5.4.400.0030.03719.09
5.4.390.0070.03719.34
5.4.380.0030.04318.98
5.4.370.0030.03719.16
5.4.360.0030.03319.34
5.4.350.0100.03319.04
5.4.340.0000.04718.97
5.4.320.0000.04019.18
5.4.310.0030.03719.02
5.4.300.0070.03319.18
5.4.290.0100.03319.22
5.4.280.0030.04319.33
5.4.270.0070.03319.09
5.4.260.0070.03019.33
5.4.250.0100.03319.08
5.4.240.0030.06019.31
5.4.230.0170.05719.02
5.4.220.0030.07719.18
5.4.210.0130.06718.98
5.4.200.0070.06719.16
5.4.190.0170.06319.17
5.4.180.0100.03019.13
5.4.170.0070.06319.30
5.4.160.0070.06319.16
5.4.150.0130.07019.01
5.4.140.0030.07316.52
5.4.130.0130.06016.32
5.4.120.0030.03316.52
5.4.110.0070.03316.31
5.4.100.0000.06316.56
5.4.90.0000.07316.65
5.4.80.0070.07316.53
5.4.70.0070.03016.52
5.4.60.0030.07016.55
5.4.50.0030.07016.54
5.4.40.0130.05716.49
5.4.30.0030.07716.62
5.4.20.0200.05316.52
5.4.10.0100.06016.62
5.4.00.0100.06715.79
5.3.290.0000.04014.64
5.3.280.0070.07314.59
5.3.270.0000.04014.84
5.3.260.0070.03014.62
5.3.250.0100.07314.57
5.3.240.0070.06714.58
5.3.230.0030.08014.61
5.3.220.0070.03714.55
5.3.210.0100.07314.69
5.3.200.0030.04314.71
5.3.190.0100.07014.70
5.3.180.0030.04314.57
5.3.170.0030.07014.70
5.3.160.0030.06714.70
5.3.150.0100.07014.56
5.3.140.0070.07714.59
5.3.130.0030.06014.54
5.3.120.0030.07714.63
5.3.110.0030.06314.51
5.3.100.0070.03714.06
5.3.90.0130.06714.04
5.3.80.0100.06314.02
5.3.70.0000.06314.03
5.3.60.0100.08314.00
5.3.50.0100.07014.03
5.3.40.0000.06314.01
5.3.30.0070.06314.04
5.3.20.0130.06013.78
5.3.10.0100.06013.66
5.3.00.0270.05313.61
5.2.170.0100.05712.61
5.2.160.0070.06012.61
5.2.150.0030.06312.61
5.2.140.0070.06312.61
5.2.130.0070.03012.61
5.2.120.0070.05712.61
5.2.110.0000.06312.61
5.2.100.0000.03312.61
5.2.90.0070.06312.61
5.2.80.0070.03312.61
5.2.70.0100.06012.61
5.2.60.0030.03712.61
5.2.50.0000.07012.61
5.2.40.0000.03712.61
5.2.30.0070.05712.61
5.2.20.0030.04712.61
5.2.10.0130.05012.61
5.2.00.0030.06012.61
5.1.60.0070.05312.61
5.1.50.0030.05012.61
5.1.40.0070.04712.61
5.1.30.0070.05012.61
5.1.20.0000.04712.61
5.1.10.0070.02712.61
5.1.00.0030.05312.61
5.0.50.0070.03312.61
5.0.40.0000.04312.61
5.0.30.0100.05012.61
5.0.20.0030.04012.61
5.0.10.0030.01712.61
5.0.00.0100.05712.61
4.4.90.0030.03712.61
4.4.80.0030.03312.61
4.4.70.0030.03312.61
4.4.60.0070.03012.61
4.4.50.0000.03012.61
4.4.40.0000.05312.61
4.4.30.0000.03712.61
4.4.20.0000.02012.61
4.4.10.0030.03712.61
4.4.00.0100.04312.61
4.3.110.0030.03012.61
4.3.100.0030.02712.61
4.3.90.0030.02012.61
4.3.80.0000.04012.61
4.3.70.0070.02712.61
4.3.60.0070.02012.61
4.3.50.0070.02012.61
4.3.40.0000.04712.61
4.3.30.0070.03012.61
4.3.20.0000.03712.61
4.3.10.0000.03712.61
4.3.00.0030.02712.61

preferences:
28.85 ms | 401 KiB | 5 Q