3v4l.org

run code in 300+ PHP versions simultaneously
<?php function is_serialized( $data, $strict = true ) { // if it isn't a string, it isn't serialized. if ( ! is_string( $data ) ) { return false; } $data = trim( $data ); if ( 'N;' == $data ) { return true; } if ( strlen( $data ) < 4 ) { return false; } if ( ':' !== $data[1] ) { return false; } if ( $strict ) { $lastc = substr( $data, -1 ); if ( ';' !== $lastc && '}' !== $lastc ) { return false; } } else { $semicolon = strpos( $data, ';' ); $brace = strpos( $data, '}' ); // Either ; or } must exist. if ( false === $semicolon && false === $brace ) return false; // But neither must be in the first X characters. if ( false !== $semicolon && $semicolon < 3 ) return false; if ( false !== $brace && $brace < 4 ) return false; } $token = $data[0]; switch ( $token ) { case 's' : if ( $strict ) { if ( '"' !== substr( $data, -2, 1 ) ) { return false; } } elseif ( false === strpos( $data, '"' ) ) { return false; } // or else fall through case 'a' : case 'O' : return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data ); case 'b' : case 'i' : case 'd' : $end = $strict ? '$' : ''; return (bool) preg_match( "/^{$token}:[0-9.E-]+;$end/", $data ); } return false; } $str = "s:4:'testxxx'}\0ryat"; if (is_serialized($str, false)) { echo 'fuck'; } else { echo 'haha'; } if (is_serialized($str)) { echo 'haha'; } else { echo 'fuck'; }

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)
8.3.60.0150.00318.55
8.3.50.0160.00521.29
8.3.40.0140.00718.80
8.3.30.0110.00419.04
8.3.20.0040.00420.33
8.3.10.0040.00423.66
8.3.00.0040.00419.13
8.2.180.0110.01116.88
8.2.170.0110.00422.96
8.2.160.0110.00420.47
8.2.150.0020.00524.18
8.2.140.0100.00024.66
8.2.130.0040.00426.16
8.2.120.0030.00722.09
8.2.110.0090.00022.13
8.2.100.0040.00717.63
8.2.90.0040.00419.25
8.2.80.0060.00317.97
8.2.70.0040.00417.75
8.2.60.0000.00818.03
8.2.50.0030.00618.07
8.2.40.0060.00318.16
8.2.30.0080.00018.14
8.2.20.0040.00417.81
8.2.10.0000.00718.19
8.2.00.0050.00317.88
8.1.280.0080.00625.92
8.1.270.0060.00922.05
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0060.00323.84
8.1.230.0080.00419.26
8.1.220.0030.00517.78
8.1.210.0040.00418.77
8.1.200.0060.00317.23
8.1.190.0080.00017.25
8.1.180.0000.00818.10
8.1.170.0080.00018.54
8.1.160.0050.00221.96
8.1.150.0040.00418.92
8.1.140.0040.00417.47
8.1.130.0030.00317.82
8.1.120.0000.00717.44
8.1.110.0030.00317.39
8.1.100.0040.00417.45
8.1.90.0000.00717.48
8.1.80.0070.00017.41
8.1.70.0070.00017.48
8.1.60.0060.00317.56
8.1.50.0000.00817.46
8.1.40.0090.00017.43
8.1.30.0060.00317.71
8.1.20.0040.00417.68
8.1.10.0000.00817.61
8.1.00.0040.00417.56
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0040.00418.41
8.0.270.0000.00717.29
8.0.260.0000.00717.17
8.0.250.0000.00717.01
8.0.240.0000.00616.98
8.0.230.0060.00317.06
8.0.220.0030.00316.90
8.0.210.0000.00716.86
8.0.200.0060.00017.07
8.0.190.0030.00516.90
8.0.180.0040.00416.86
8.0.170.0040.00416.84
8.0.160.0030.00317.02
8.0.150.0000.00816.71
8.0.140.0000.00716.79
8.0.130.0000.00613.36
8.0.120.0000.00716.86
8.0.110.0030.00516.92
8.0.100.0000.00716.87
8.0.90.0050.00216.88
8.0.80.0040.01316.97
8.0.70.0050.00216.97
8.0.60.0000.00716.92
8.0.50.0040.00416.74
8.0.30.0090.01417.17
8.0.20.0080.01317.40
8.0.10.0040.00417.09
8.0.00.0150.00216.80
7.4.330.0050.00015.12
7.4.320.0060.00016.64
7.4.300.0070.00016.69
7.4.290.0020.00516.64
7.4.280.0000.00816.48
7.4.270.0000.00716.54
7.4.260.0050.00216.62
7.4.250.0000.00716.48
7.4.240.0020.00516.57
7.4.230.0000.00716.57
7.4.220.0110.00716.57
7.4.210.0130.00616.67
7.4.200.0040.00416.58
7.4.160.0090.00616.66
7.4.150.0060.01217.40
7.4.140.0140.00817.86
7.4.130.0130.00616.38
7.4.120.0100.00816.55
7.4.110.0040.02016.54
7.4.100.0110.00716.51
7.4.90.0130.00316.57
7.4.80.0100.01319.39
7.4.70.0080.01116.60
7.4.60.0070.01016.51
7.4.50.0040.00416.57
7.4.40.0080.00816.38
7.4.30.0160.00716.62
7.4.00.0130.00314.82
7.3.330.0050.00013.36
7.3.320.0000.00613.36
7.3.310.0000.00716.41
7.3.300.0070.00016.48
7.3.290.0100.00616.39
7.3.280.0070.01016.39
7.3.270.0080.00917.40
7.3.260.0100.01316.39
7.3.250.0080.00816.51
7.3.240.0110.00816.63
7.3.230.0060.01116.60
7.3.210.0080.00816.41
7.3.200.0130.00919.39
7.3.190.0110.00716.47
7.3.180.0060.01016.38
7.3.170.0030.01316.51
7.3.160.0100.01016.50
7.2.330.0000.01816.57
7.2.320.0090.00916.45
7.2.310.0100.00716.63
7.2.300.0100.01016.42
7.2.290.0140.00416.57
7.2.80.0040.00816.75
7.2.60.0080.00816.94
7.2.00.0060.00619.57
7.1.200.0080.00515.82
7.1.100.0070.00718.28
7.1.70.0080.00017.20
7.1.60.0070.01019.19
7.1.50.0070.01417.08
7.1.00.0030.08022.33
7.0.200.0040.00416.82
7.0.140.0130.06322.10
7.0.60.0130.05019.90
7.0.50.0070.07017.89
7.0.40.0100.07320.11
7.0.30.0500.07320.16
7.0.20.0300.04320.12
7.0.10.0100.06720.30
7.0.00.0100.08720.23
5.6.280.0000.07721.16
5.6.210.0200.08020.52
5.6.200.0100.08018.11
5.6.190.0070.07020.63
5.6.180.0300.07020.57
5.6.170.0400.07720.39
5.6.160.0000.06320.39
5.6.150.0070.04018.25
5.6.140.0000.05018.15
5.6.130.0100.06318.15
5.6.120.0030.07721.11
5.6.110.0030.08321.06
5.6.100.0130.06721.13
5.6.90.0130.08020.99
5.6.80.0100.06020.44
5.6.70.4330.04320.38
5.5.350.0200.06320.45
5.5.340.0000.07717.93
5.5.330.0030.04320.43
5.5.320.0170.04320.31
5.5.310.0270.07020.34
5.5.300.0000.04018.04
5.5.290.0030.05317.98
5.5.280.0030.09020.78
5.5.270.0070.05020.78
5.5.260.0030.04020.86
5.5.250.0070.08720.79
5.5.240.0230.07020.17
5.4.450.0070.07019.48
5.4.440.0800.05719.70
5.4.430.0900.05719.61
5.4.420.0770.07719.54
5.4.410.0730.08019.20
5.4.400.0830.05019.02
5.4.390.0170.06719.28
5.4.380.0730.06318.98
5.4.370.0670.05319.30
5.4.360.0830.06319.15
5.4.350.0870.05319.30
5.4.340.0090.04612.03
5.4.320.0070.04012.52
5.4.310.0010.04212.52
5.4.300.0060.03712.52
5.4.290.0050.04012.51
5.4.280.0080.03412.41
5.4.270.0070.03412.41
5.4.260.0050.04012.41
5.4.250.0060.03712.41
5.4.240.0050.03812.41
5.4.230.0060.04012.41
5.4.220.0070.03712.41
5.4.210.0070.04012.41
5.4.200.0090.03612.41
5.4.190.0080.03412.40
5.4.180.0050.03712.40
5.4.170.0060.04112.41
5.4.160.0050.04112.41
5.4.150.0050.03912.40
5.4.140.0050.03912.09
5.4.130.0060.03612.07
5.4.120.0030.03912.03
5.4.110.0040.03712.03
5.4.100.0060.03812.03
5.4.90.0050.04012.02
5.4.80.0050.03812.03
5.4.70.0060.03412.03
5.4.60.0070.03312.02
5.4.50.0050.03612.02
5.4.40.0040.03612.01
5.4.30.0040.03712.01
5.4.20.0040.03712.01
5.4.10.0050.03512.01
5.4.00.0060.03711.49
5.3.290.0080.03612.80
5.3.280.0040.03912.71
5.3.270.0100.03712.72
5.3.260.0040.04112.72
5.3.250.0030.03912.72
5.3.240.0080.03712.72
5.3.230.0090.03812.71
5.3.220.0070.03712.68
5.3.210.0070.03712.68
5.3.200.0060.03712.68
5.3.190.0050.03912.67
5.3.180.0050.03812.67
5.3.170.0030.04012.66
5.3.160.0060.03712.68
5.3.150.0050.04112.67
5.3.140.0050.03612.66
5.3.130.0070.03712.66
5.3.120.0090.03612.65
5.3.110.0040.04112.66
5.3.100.0060.04712.14
5.3.90.0090.03612.12
5.3.80.0090.03312.11
5.3.70.0080.03512.11
5.3.60.0070.03612.09
5.3.50.0040.03812.04
5.3.40.0020.03912.04
5.3.30.0070.03312.00
5.3.20.0070.03311.79
5.3.10.0040.03711.75
5.3.00.0070.04011.73
5.2.170.0030.0349.24
5.2.160.0040.0299.24
5.2.150.0030.0339.24
5.2.140.0050.0309.24
5.2.130.0050.0279.20
5.2.120.0040.0289.20
5.2.110.0050.0309.20
5.2.100.0070.0269.20
5.2.90.0040.0319.20
5.2.80.0050.0329.19
5.2.70.0030.0349.20
5.2.60.0070.0329.15
5.2.50.0070.0289.12
5.2.40.0060.0289.09
5.2.30.0050.0319.07
5.2.20.0060.0319.05
5.2.10.0040.0298.96
5.2.00.0100.0348.83
5.1.60.0050.0358.11
5.1.50.0080.0308.11
5.1.40.0050.0258.08
5.1.30.0070.0248.43
5.1.20.0040.0278.46
5.1.10.0030.0278.19
5.1.00.0030.0278.19
5.0.50.0050.0206.67
5.0.40.0030.0206.53
5.0.30.0030.0326.34
5.0.20.0030.0206.30
5.0.10.0050.0186.29
5.0.00.0040.0316.29
4.4.90.0010.0174.78
4.4.80.0040.0174.75
4.4.70.0050.0174.75
4.4.60.0040.0154.75
4.4.50.0050.0204.77
4.4.40.0030.0304.71
4.4.30.0030.0164.76
4.4.20.0030.0164.84
4.4.10.0060.0174.85
4.4.00.0040.0264.76
4.3.110.0040.0214.66
4.3.100.0040.0204.66
4.3.90.0070.0164.63
4.3.80.0030.0274.59
4.3.70.0040.0144.63
4.3.60.0010.0164.63
4.3.50.0020.0164.63
4.3.40.0020.0254.54
4.3.30.0020.0173.34
4.3.20.0010.0173.33
4.3.10.0000.0183.28
4.3.00.0070.0236.86

preferences:
40.81 ms | 401 KiB | 5 Q