3v4l.org

run code in 300+ PHP versions simultaneously
<?php function rpc_int_unserialize(&$str, $size = 4) { $res = 0; for ($i = $size - 1; $i >= 0; $i--) { ech($str{$i}); $res = ($res * 256) + ord($str{$i}); }; $str = substr($str, $size); return $res; } $head = "qwerty"; echo(rpc_int_unserialize($head)); echo(rpc_int_unserialize($head)); echo($head); ?>

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)
8.3.40.0150.00018.81
8.3.30.0120.00318.55
8.3.20.0070.00720.23
8.3.10.0080.00023.66
8.3.00.0130.00319.67
8.2.170.0120.00322.96
8.2.160.0030.01120.39
8.2.150.0000.00725.66
8.2.140.0000.00724.66
8.2.130.0040.00426.16
8.2.120.0060.00317.63
8.2.110.0000.01122.11
8.2.100.0090.00317.80
8.2.90.0060.00318.98
8.2.80.0080.00017.97
8.2.70.0040.00417.49
8.2.60.0080.00017.80
8.2.50.0040.00418.07
8.2.40.0050.00321.10
8.2.30.0000.00720.64
8.2.20.0000.00717.37
8.2.10.0000.00717.82
8.2.00.0060.00317.97
8.1.270.0070.00023.99
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0050.00522.48
8.1.230.0080.00418.88
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.00
8.1.190.0000.00817.23
8.1.180.0040.00418.10
8.1.170.0000.00818.38
8.1.160.0040.00421.94
8.1.150.0000.00718.67
8.1.140.0060.00319.48
8.1.130.0030.00317.50
8.1.120.0000.00817.34
8.1.110.0000.00717.14
8.1.100.0030.00517.35
8.1.90.0040.00417.28
8.1.80.0040.00417.24
8.1.70.0000.00717.29
8.1.60.0040.00417.33
8.1.50.0080.00017.31
8.1.40.0000.00817.26
8.1.30.0040.00417.56
8.1.20.0000.01117.49
8.1.10.0050.00317.39
8.1.00.0060.00317.36
8.0.300.0040.00418.77
8.0.290.0000.00716.63
8.0.280.0060.00318.30
8.0.270.0070.00017.11
8.0.260.0030.00317.12
8.0.250.0040.00416.95
8.0.240.0040.00416.77
8.0.230.0040.00416.79
8.0.220.0050.00216.86
8.0.210.0050.00316.83
8.0.200.0000.00816.89
8.0.190.0090.00016.84
8.0.180.0030.00316.79
8.0.170.0030.00616.71
8.0.160.0050.00316.84
8.0.150.0070.00016.74
8.0.140.0020.00516.78
8.0.130.0040.00413.23
8.0.120.0040.00416.77
8.0.110.0040.00416.85
8.0.100.0000.00716.85
8.0.90.0080.00016.85
8.0.80.0030.01216.84
8.0.70.0000.00716.81
8.0.60.0040.00416.93
8.0.50.0040.00416.77
8.0.30.0130.00216.99
8.0.20.0100.01217.40
8.0.10.0000.00716.81
8.0.00.0120.00716.71
7.4.330.0000.00515.08
7.4.320.0060.00016.57
7.4.300.0070.00016.52
7.4.290.0000.00816.42
7.4.280.0070.00316.39
7.4.270.0070.00016.52
7.4.260.0000.00716.48
7.4.250.0030.00516.57
7.4.240.0050.00216.59
7.4.230.0070.00016.57
7.4.220.0100.01016.50
7.4.210.0090.00616.63
7.4.200.0030.00316.60
7.4.160.0140.00316.47
7.4.150.0150.00917.40
7.4.140.0100.01017.86
7.4.130.0090.00816.57
7.4.120.0110.00616.54
7.4.110.0100.00616.44
7.4.100.0090.00916.69
7.4.90.0070.01016.39
7.4.80.0150.00819.39
7.4.70.0140.00316.40
7.4.60.0090.00816.48
7.4.50.0000.00416.30
7.4.40.0120.00416.57
7.4.30.0150.00916.71
7.4.10.0070.01114.71
7.4.00.0110.00515.17
7.3.330.0060.00013.36
7.3.320.0060.00013.30
7.3.310.0030.00316.18
7.3.300.0060.00016.25
7.3.290.0070.00916.32
7.3.280.0100.01016.33
7.3.270.0130.00417.40
7.3.260.0150.00316.39
7.3.250.0080.00916.35
7.3.240.0100.01116.50
7.3.230.0090.00616.39
7.3.210.0100.00616.30
7.3.200.0080.00816.39
7.3.190.0130.00316.20
7.3.180.0080.00816.34
7.3.170.0140.00916.34
7.3.160.0100.00716.28
7.3.130.0070.01114.87
7.3.120.0030.01315.09
7.3.110.0060.01014.86
7.3.100.0040.00814.86
7.3.90.0060.00914.76
7.3.80.0060.00615.00
7.3.70.0100.00614.47
7.3.60.0040.00414.77
7.3.50.0040.00414.81
7.3.40.0060.00914.88
7.3.30.0070.00714.84
7.3.20.0080.00416.32
7.3.10.0030.00916.63
7.3.00.0120.00016.72
7.2.330.0110.01116.56
7.2.320.0150.00416.43
7.2.310.0120.01016.71
7.2.300.0130.00316.74
7.2.290.0070.01016.47
7.2.260.0150.00415.18
7.2.250.0040.01114.74
7.2.240.0060.00915.10
7.2.230.0060.00914.91
7.2.220.0080.00815.11
7.2.210.0080.00815.00
7.2.200.0040.00714.92
7.2.190.0120.00314.70
7.2.180.0030.00715.18
7.2.170.0060.00914.89
7.2.160.0000.01114.95
7.2.150.0110.00416.84
7.2.140.0000.01316.94
7.2.130.0100.00316.93
7.2.120.0100.00316.83
7.2.110.0060.00616.91
7.2.100.0090.00616.90
7.2.90.0000.01316.97
7.2.80.0060.01017.00
7.2.70.0030.00617.09
7.2.60.0060.00816.95
7.2.50.0040.00716.79
7.2.40.0110.00416.81
7.2.30.0060.00916.71
7.2.20.0030.01316.88
7.2.10.0030.01316.89
7.2.00.0090.00518.13
7.1.330.0070.00715.71
7.1.320.0080.00315.75
7.1.310.0030.00715.46
7.1.300.0030.00615.87
7.1.290.0030.01015.60
7.1.280.0070.00715.53
7.1.270.0040.00415.62
7.1.260.0030.01015.70
7.1.250.0060.00815.85
7.1.240.0050.00615.78
7.1.230.0090.00615.82
7.1.220.0030.00615.55
7.1.210.0070.00415.65
7.1.200.0070.00615.59
7.1.190.0040.00815.85
7.1.180.0030.01015.47
7.1.170.0030.00715.50
7.1.160.0070.00715.72
7.1.150.0060.00615.70
7.1.140.0030.00915.64
7.1.130.0030.01015.54
7.1.120.0090.00615.66
7.1.110.0070.00315.66
7.1.100.0050.00716.92
7.1.90.0060.00615.73
7.1.80.0030.01015.70
7.1.70.0040.00716.22
7.1.60.0060.01017.52
7.1.50.0050.01216.12
7.1.40.0030.01315.57
7.1.30.0040.00915.65
7.1.20.0040.00715.79
7.1.10.0030.00615.68
7.1.00.0070.04119.00
7.0.330.0050.00315.37
7.0.320.0060.00615.53
7.0.310.0040.00415.24
7.0.300.0000.01115.40
7.0.290.0100.00315.19
7.0.280.0030.00715.44
7.0.270.0040.00715.23
7.0.260.0070.00715.21
7.0.250.0040.01115.25
7.0.240.0090.00615.50
7.0.230.0080.00315.51
7.0.220.0080.00615.50
7.0.210.0060.00615.46
7.0.200.0030.00616.04
7.0.190.0000.01515.18
7.0.180.0030.01015.42
7.0.170.0000.00815.17
7.0.160.0050.00315.57
7.0.150.0060.00615.44
7.0.140.0040.00415.20
7.0.130.0060.00315.39
7.0.120.0000.01015.35
7.0.110.0040.00415.45
7.0.100.0090.00615.02
7.0.90.0030.00915.48
7.0.80.0070.00315.53
7.0.70.0030.01015.45
7.0.60.0060.02317.65
7.0.50.0060.04116.72
7.0.40.0120.04216.85
7.0.30.0150.04416.89
7.0.20.0120.02316.68
7.0.10.0070.02316.89
7.0.00.0070.03316.71
5.6.400.0000.01014.42
5.6.390.0030.00614.48
5.6.380.0030.00714.64
5.6.370.0080.00814.44
5.6.360.0130.00014.44
5.6.350.0060.00614.41
5.6.340.0000.01214.35
5.6.330.0030.01414.14
5.6.320.0000.01314.16
5.6.310.0040.00414.64
5.6.300.0060.00614.09
5.6.290.0030.01014.48
5.6.280.0040.00414.09
5.6.270.0110.00614.02
5.6.260.0030.01014.42
5.6.250.0000.00914.04
5.6.240.0030.00614.25
5.6.230.0150.00314.25
5.6.220.0040.01414.31
5.6.210.0030.04417.46
5.6.200.0090.03716.09
5.6.190.0020.03217.59
5.6.180.0180.04017.61
5.6.170.0150.04517.21
5.6.160.0030.04517.54
5.6.150.0080.03216.21
5.6.140.0050.04316.25
5.6.130.0110.04016.36
5.6.120.0050.05017.55
5.6.110.0120.04317.63
5.6.100.0100.04417.57
5.6.90.0100.03917.65
5.6.80.0050.04517.22
5.6.70.0000.00814.29
5.6.60.0070.00714.09
5.6.50.0000.00914.13
5.6.40.0000.01614.02
5.6.30.0070.00314.27
5.6.20.0070.00714.21
5.6.10.0030.00614.36
5.6.00.0030.00714.14
5.5.380.0000.00914.37
5.5.370.0060.00614.11
5.5.360.0060.00914.15
5.5.350.0050.04017.43
5.5.340.0080.04216.13
5.5.330.0110.04317.18
5.5.320.2000.02517.29
5.5.310.0160.03817.19
5.5.300.0080.02216.36
5.5.290.0050.03516.05
5.5.280.0080.03217.63
5.5.270.0050.04417.60
5.5.260.0050.04517.46
5.5.250.0060.04917.22
5.5.240.0040.02017.16
5.5.230.0030.01013.98
5.5.220.0030.01014.30
5.5.210.0030.00714.19
5.5.200.0100.00314.00
5.5.190.0060.00314.32
5.5.180.0030.01114.27
5.5.170.0000.00914.20
5.5.160.0070.00414.11
5.5.150.0070.00713.86
5.5.140.0000.01414.32
5.5.130.0090.00314.42
5.5.120.0090.00314.23
5.5.110.0110.00313.99
5.5.100.0040.01114.25
5.5.90.0030.00614.07
5.5.80.0030.01114.16
5.5.70.0070.00414.01
5.5.60.0060.01014.14
5.5.50.0000.01414.12
5.5.40.0060.00614.14
5.5.30.0070.00414.27
5.5.20.0000.01513.99
5.5.10.0070.00713.98
5.5.00.0070.00714.18
5.4.450.0080.03516.19
5.4.440.0170.03216.13
5.4.430.0140.03116.09
5.4.420.0150.03016.20
5.4.410.0080.03516.00
5.4.400.0170.02916.03
5.4.390.0150.02416.04
5.4.380.0090.02815.96
5.4.370.0120.02515.83
5.4.360.0180.02216.01
5.4.350.0150.03216.08
5.4.340.0120.04216.03
5.4.330.0030.00712.79
5.4.320.0100.03715.93
5.4.310.0140.02515.97
5.4.300.0160.02515.98
5.4.290.0150.03316.04
5.4.280.0150.02615.97
5.4.270.0120.03015.83
5.4.260.0160.02615.81
5.4.250.0070.03616.02
5.4.240.0100.02616.08
5.4.230.0210.02815.90
5.4.220.0350.03315.97
5.4.210.0220.03116.03
5.4.200.0300.03015.90
5.4.190.0280.03016.03
5.4.180.0410.03615.81
5.4.170.0370.02516.02
5.4.160.0350.03016.03
5.4.150.0350.03015.82
5.4.140.0380.04014.65
5.4.130.0370.02614.62
5.4.120.0340.02714.54
5.4.110.0340.03214.66
5.4.100.0330.03214.52
5.4.90.0280.02514.71
5.4.80.0360.02614.69
5.4.70.0230.03014.67
5.4.60.0120.02814.66
5.4.50.0050.03214.61
5.4.40.0130.02514.66
5.4.30.0160.03114.66
5.4.20.0050.04314.56
5.4.10.0040.00412.79
5.4.00.0060.00612.79

preferences:
60.16 ms | 400 KiB | 5 Q