3v4l.org

run code in 300+ PHP versions simultaneously
<?php function generate_GUID($prefix='pfx') { $uuid = md5(uniqid(rand(), true)); $guid = $prefix.substr($uuid,0,8)."-". substr($uuid,8,4)."-". substr($uuid,12,4)."-". substr($uuid,16,4)."-". substr($uuid,20,12); return $guid; } echo generate_GUID($prefix='pfx');

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)
7.4.10.0100.00614.68
7.4.00.0040.01415.19
7.3.130.0090.00915.03
7.3.120.0000.01814.99
7.3.110.0070.01014.51
7.3.100.0040.01115.01
7.3.90.0100.00314.93
7.3.80.0000.01414.48
7.3.70.0100.00714.61
7.3.60.0080.00814.97
7.3.50.0070.00714.65
7.3.40.0030.01014.88
7.3.30.0070.01014.57
7.3.20.0060.00916.48
7.3.10.0120.00316.64
7.3.00.0040.01116.75
7.2.260.0140.00315.10
7.2.250.0100.00715.18
7.2.240.0080.00814.96
7.2.230.0060.00915.21
7.2.220.0060.00915.00
7.2.210.0070.00715.07
7.2.200.0110.00314.84
7.2.190.0000.01414.96
7.2.180.0040.00815.17
7.2.170.0000.01515.04
7.2.160.0070.01014.96
7.2.150.0090.00616.95
7.2.140.0060.01016.99
7.2.130.0080.00817.05
7.2.120.0030.00917.07
7.2.110.0070.01016.93
7.2.100.0100.00716.96
7.2.90.0110.00716.98
7.2.80.0040.01117.09
7.2.70.0120.00417.00
7.2.60.0060.00616.65
7.2.50.0070.00717.05
7.2.40.0060.01016.86
7.2.30.0000.01316.83
7.2.20.0120.00616.73
7.2.10.0040.01416.90
7.2.00.0050.00918.04
7.1.330.0070.00715.86
7.1.320.0060.00615.74
7.1.310.0040.01115.67
7.1.300.0070.00715.46
7.1.290.0100.00715.63
7.1.280.0000.00915.90
7.1.270.0080.00815.70
7.1.260.0070.00715.77
7.1.250.0060.00915.70
7.1.240.0050.00515.81
7.1.230.0080.00515.50
7.1.220.0100.00315.62
7.1.210.0040.01415.74
7.1.200.0090.00615.70
7.1.190.0090.00615.85
7.1.180.0060.01015.87
7.1.170.0030.01015.55
7.1.160.0110.00415.48
7.1.150.0030.01415.90
7.1.140.0000.01415.96
7.1.130.0000.01515.80
7.1.120.0000.01215.86
7.1.110.0060.00315.64
7.1.100.0030.00615.68
7.1.90.0000.01415.84
7.1.80.0040.01115.83
7.1.70.0070.00416.41
7.1.60.0060.00917.78
7.1.50.0060.00916.35
7.1.40.0070.01015.62
7.1.30.0040.01115.80
7.1.20.0000.00815.68
7.1.10.0110.00415.81
7.1.00.0020.04519.05
7.0.330.0040.01115.28
7.0.320.0070.00715.48
7.0.310.0160.00015.33
7.0.300.0040.01115.33
7.0.290.0100.00715.27
7.0.280.0030.00915.51
7.0.270.0070.01015.12
7.0.260.0060.00615.25
7.0.250.0070.00315.55
7.0.240.0060.00615.63
7.0.230.0040.00415.24
7.0.220.0030.00615.38
7.0.210.0030.00615.41
7.0.200.0020.00916.14
7.0.190.0000.01115.40
7.0.180.0030.00715.10
7.0.170.0060.00615.51
7.0.160.0030.00715.28
7.0.150.0070.00715.43
7.0.140.0030.04018.73
7.0.130.0000.01215.52
7.0.120.0070.00715.34
7.0.110.0000.01115.34
7.0.100.0150.00015.14
7.0.90.0070.01015.25
7.0.80.0100.00315.50
7.0.70.0000.01115.34
7.0.60.0050.04717.68
7.0.50.0090.04416.69
7.0.40.0090.02416.95
7.0.30.0080.02916.79
7.0.20.0230.03916.89
7.0.10.0080.02816.87
7.0.00.0050.03216.69
5.6.400.0070.01014.19
5.6.390.0040.01114.57
5.6.380.0090.00614.38
5.6.370.0100.00314.41
5.6.360.0000.01414.23
5.6.350.0050.00814.21
5.6.340.0070.01014.56
5.6.330.0070.00714.15
5.6.320.0030.01014.17
5.6.310.0030.01014.32
5.6.300.0070.00714.25
5.6.290.0000.01614.41
5.6.280.0040.04217.62
5.6.270.0090.00014.18
5.6.260.0040.00414.23
5.6.250.0040.01014.24
5.6.240.0030.01214.09
5.6.230.0070.00714.34
5.6.220.0060.00914.44
5.6.210.0070.04517.47
5.6.200.0100.01816.36
5.6.190.0100.02317.28
5.6.180.0070.04017.25
5.6.170.0240.03817.28
5.6.160.0030.04917.49
5.6.150.0080.04316.26
5.6.140.0000.03716.22
5.6.130.0050.04316.12
5.6.120.0070.04217.73
5.6.110.0050.03517.80
5.6.100.0060.02317.71
5.6.90.0180.03017.69
5.6.80.0050.04317.35
5.6.70.0040.00814.33
5.6.60.0000.01114.40
5.6.50.0080.00314.18
5.6.40.0030.01014.13
5.6.30.0090.00614.27
5.6.20.0030.01014.05
5.6.10.0100.00614.14
5.6.00.0060.00314.27
5.5.380.0040.01114.38
5.5.370.0030.01014.30
5.5.360.0000.01614.14
5.5.350.0050.04417.50
5.5.340.0100.03715.99
5.5.330.0050.02317.44
5.5.320.0120.02917.37
5.5.310.0200.04417.37
5.5.300.0080.03215.94
5.5.290.0050.04416.26
5.5.280.0080.03517.46
5.5.270.0030.02517.52
5.5.260.0100.04317.65
5.5.250.0070.02717.18
5.5.240.0060.04117.16
5.5.230.0090.00614.36
5.5.220.0070.00314.21
5.5.210.0090.00614.32
5.5.200.0040.01214.17
5.5.190.0070.00714.32
5.5.180.0150.00014.08
5.5.170.0100.00713.98
5.5.160.0080.00814.33
5.5.150.0060.00313.79
5.5.140.0040.01114.32
5.5.130.0070.00713.88
5.5.120.0090.00614.20
5.5.110.0060.00614.14
5.5.100.0080.00613.99
5.5.90.0040.00714.27
5.5.80.0030.01314.21
5.5.70.0070.00714.22
5.5.60.0050.00814.31
5.5.50.0080.00413.97
5.5.40.0100.00314.28
5.5.30.0070.00714.11
5.5.20.0070.00714.11
5.5.10.0080.00314.25
5.5.00.0090.00313.83
5.4.450.0080.04716.25
5.4.440.0170.02016.25
5.4.430.0130.02816.26
5.4.420.0170.03916.13
5.4.410.0180.02216.00
5.4.400.0140.02916.10
5.4.390.0180.02016.01
5.4.380.0180.03216.10
5.4.370.0180.03516.13
5.4.360.0180.03516.02
5.4.350.0120.02716.02
5.4.340.0170.01816.02
5.4.330.0030.00712.95
5.4.320.0130.04416.07
5.4.310.0170.03516.10
5.4.300.0100.04416.04
5.4.290.0150.01815.90
5.4.280.0220.03416.05
5.4.270.0120.02515.91
5.4.260.0130.03515.96
5.4.250.0120.03316.05
5.4.240.0220.03216.05
5.4.230.0120.03016.04
5.4.220.0150.02515.97
5.4.210.0120.03315.96
5.4.200.0150.02616.07
5.4.190.0100.03116.09
5.4.180.0130.04016.08
5.4.170.0170.03716.00
5.4.160.0120.04016.06
5.4.150.0080.03416.09
5.4.140.0130.02714.76
5.4.130.0170.03414.66
5.4.120.0130.02114.75
5.4.110.0180.03314.70
5.4.100.0200.02214.68
5.4.90.0100.04314.77
5.4.80.0150.03514.76
5.4.70.0120.03914.62
5.4.60.0110.02314.69
5.4.50.0130.03814.65
5.4.40.0130.03714.74
5.4.30.0120.02814.71
5.4.20.0160.03914.73
5.4.10.0180.02714.69
5.4.00.0230.01914.37
5.3.290.0130.04413.79
5.3.280.0130.02113.80
5.3.270.0100.02613.88
5.3.260.0110.02113.78
5.3.250.0150.03713.73
5.3.240.0120.03913.85
5.3.230.0150.02613.83
5.3.220.0150.03713.76
5.3.210.0170.03213.74
5.3.200.0160.02613.71
5.3.190.0200.02013.74
5.3.180.0140.02613.76
5.3.170.0120.02213.71
5.3.160.0170.03313.75
5.3.150.0200.02913.76
5.3.140.0140.03913.76
5.3.130.0130.03513.79
5.3.120.0190.03213.79
5.3.110.0160.03613.72
5.3.100.0170.03513.44
5.3.90.0170.02713.61
5.3.80.0130.04113.59
5.3.70.0180.03113.59
5.3.60.0130.02813.56
5.3.50.0120.02913.48
5.3.40.0200.01813.46
5.3.30.0130.02513.38
5.3.20.0100.01713.32
5.3.10.0130.01813.42
5.3.00.0150.01813.29
5.2.170.0200.06012.08
5.2.160.0230.04012.08
5.2.150.0130.03312.08
5.2.140.0130.03012.08
5.2.130.0130.02712.08
5.2.120.0100.03012.08
5.2.110.0130.02712.08
5.2.100.0170.03012.08
5.2.90.0100.03712.08
5.2.80.0130.02712.08
5.2.70.0100.03012.08
5.2.60.0130.03712.08
5.2.50.0070.04012.08
5.2.40.0100.02712.08
5.2.30.0100.04012.08
5.2.20.0130.02312.08
5.2.10.0070.03012.08
5.2.00.0030.03312.08
5.1.60.0100.02312.08
5.1.50.0130.02712.08
5.1.40.0130.02712.08
5.1.30.0100.02312.08
5.1.20.0070.02712.08
5.1.10.0100.02712.08
5.1.00.0000.03312.08
5.0.50.0030.02312.08
5.0.40.0070.01712.08
5.0.30.0070.03012.08
5.0.20.0030.02012.08
5.0.10.0100.01712.08
5.0.00.0030.03012.08
4.4.90.0030.01712.08
4.4.80.0030.01712.08
4.4.70.0030.02012.08
4.4.60.0030.01712.08
4.4.50.0070.01312.08
4.4.40.0070.02012.08
4.4.30.0030.01712.08
4.4.20.0070.01312.08
4.4.10.0030.01712.08
4.4.00.0030.03012.08
4.3.110.0070.01312.08
4.3.100.0030.02712.08
4.3.90.0070.03012.08
4.3.80.0000.02712.08
4.3.70.0030.01712.08
4.3.60.0070.01312.08
4.3.50.0030.01312.08
4.3.40.0100.02012.08
4.3.30.0070.01712.08
4.3.20.0030.02012.08
4.3.10.0000.02012.08
4.3.00.0030.03712.08

preferences:
40.54 ms | 401 KiB | 5 Q