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; } $str = 's:4:"testxxx"}'; if (is_serialized($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)
8.3.70.0060.01318.56
8.3.60.0070.01118.30
8.3.50.0260.01121.24
8.3.40.0090.00619.12
8.3.30.0090.00618.93
8.3.20.0000.00720.34
8.3.10.0050.00323.43
8.3.00.0080.00019.51
8.2.180.0130.00316.75
8.2.170.0120.00322.96
8.2.160.0110.00020.39
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0080.00026.16
8.2.120.0090.00019.86
8.2.110.0100.00022.09
8.2.100.0120.00017.66
8.2.90.0040.00419.34
8.2.80.0000.00817.97
8.2.70.0030.00617.75
8.2.60.0040.00418.04
8.2.50.0040.00418.07
8.2.40.0000.00918.22
8.2.30.0000.00718.31
8.2.20.0040.00417.99
8.2.10.0000.00718.27
8.2.00.0000.00817.93
8.1.280.0060.00925.92
8.1.270.0030.00622.08
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0040.00423.91
8.1.230.0040.00719.19
8.1.220.0000.00818.04
8.1.210.0080.00018.77
8.1.200.0000.00917.47
8.1.190.0030.00517.23
8.1.180.0030.00518.10
8.1.170.0000.00818.78
8.1.160.0040.00422.10
8.1.150.0000.00818.82
8.1.140.0040.00417.57
8.1.130.0000.00717.95
8.1.120.0000.00717.65
8.1.110.0000.00717.61
8.1.100.0040.00417.68
8.1.90.0000.00717.57
8.1.80.0040.00417.64
8.1.70.0050.00217.50
8.1.60.0030.00617.75
8.1.50.0040.00417.72
8.1.40.0040.00417.66
8.1.30.0050.00317.88
8.1.20.0040.00417.73
8.1.10.0000.00817.80
8.1.00.0050.00317.64
8.0.300.0000.00718.77
8.0.290.0070.00016.88
8.0.280.0000.00718.44
8.0.270.0030.00317.31
8.0.260.0070.00017.30
8.0.250.0000.00817.15
8.0.240.0030.00317.07
8.0.230.0000.01017.07
8.0.220.0030.00516.96
8.0.210.0040.00417.12
8.0.200.0040.00417.02
8.0.190.0000.00817.10
8.0.180.0040.00417.06
8.0.170.0050.00317.10
8.0.160.0070.00017.04
8.0.150.0000.00816.88
8.0.140.0040.00416.92
8.0.130.0000.00613.51
8.0.120.0040.00417.07
8.0.110.0000.00817.05
8.0.100.0000.00716.86
8.0.90.0030.00617.03
8.0.80.0100.00717.11
8.0.70.0000.00717.02
8.0.60.0000.00717.12
8.0.50.0040.00417.03
8.0.30.0140.00617.25
8.0.20.0100.01017.47
8.0.10.0040.00417.10
8.0.00.0060.01217.08
7.4.330.0020.00215.09
7.4.320.0030.00316.84
7.4.300.0000.00716.88
7.4.290.0050.00316.85
7.4.280.0030.00616.67
7.4.270.0030.00316.78
7.4.260.0000.00716.80
7.4.250.0040.00416.71
7.4.240.0030.00516.82
7.4.230.0030.00316.59
7.4.220.0150.00316.87
7.4.210.0060.00916.82
7.4.200.0000.00716.73
7.4.160.0110.00416.64
7.4.150.0080.01617.40
7.4.140.0120.00617.86
7.4.130.0050.01216.71
7.4.120.0090.01116.77
7.4.110.0090.00916.81
7.4.100.0110.00716.77
7.4.90.0090.00916.67
7.4.80.0070.01019.39
7.4.70.0160.00516.78
7.4.60.0040.01416.50
7.4.50.0030.00616.74
7.4.40.0030.01316.58
7.4.30.0160.00616.70
7.4.00.0030.01315.21
7.3.330.0000.00513.54
7.3.320.0030.00313.46
7.3.310.0000.00716.59
7.3.300.0000.00716.41
7.3.290.0030.01116.55
7.3.280.0090.00816.57
7.3.270.0110.00717.40
7.3.260.0110.00616.61
7.3.250.0140.00316.66
7.3.240.0080.01416.89
7.3.230.0060.01016.50
7.3.210.0090.00916.91
7.3.200.0100.00619.39
7.3.190.0060.01316.77
7.3.180.0070.01016.66
7.3.170.0060.01116.69
7.3.160.0030.01316.65
7.2.330.0100.00716.74
7.2.320.0040.01316.74
7.2.310.0070.01016.88
7.2.300.0160.00316.81
7.2.290.0120.00716.97
7.2.00.0030.00619.58
7.1.100.0040.01118.32
7.1.70.0070.00717.44
7.1.60.0140.01119.19
7.1.50.0040.01817.24
7.1.00.0130.07022.32
7.0.200.0080.00016.67
7.0.140.0030.06721.95
7.0.60.0170.07719.82
7.0.50.0070.04017.92
7.0.40.0070.05320.32
7.0.30.0400.06020.11
7.0.20.0330.05020.25
7.0.10.0100.08020.34
7.0.00.0070.07320.25
5.6.280.0070.07020.84
5.6.210.0070.08020.54
5.6.200.0130.08318.31
5.6.190.0100.08020.45
5.6.180.0200.08320.39
5.6.170.0330.06720.54
5.6.160.0070.06320.43
5.6.150.0000.05718.27
5.6.140.0100.06318.15
5.6.130.0070.09018.16
5.6.120.0000.09021.13
5.6.110.0070.03721.11
5.6.100.0070.08721.13
5.6.90.0100.08321.14
5.6.80.0070.08020.52
5.6.70.4470.04020.41
5.5.350.0130.06320.51
5.5.340.0000.04317.97
5.5.330.0170.05320.28
5.5.320.0200.05320.38
5.5.310.0270.08020.19
5.5.300.0100.03318.02
5.5.290.0030.06017.98
5.5.280.0000.08720.70
5.5.270.0030.04320.89
5.5.260.0000.04320.88
5.5.250.0070.08320.60
5.5.240.0300.05720.05
5.4.450.0700.06019.32
5.4.440.0900.05019.61
5.4.430.0870.05019.47
5.4.420.0370.05319.63
5.4.410.0600.05719.32
5.4.400.0670.06319.38
5.4.390.0870.05719.38
5.4.380.0730.06318.84
5.4.370.1230.05719.02
5.4.360.0770.05018.87
5.4.350.0700.05719.08
5.4.340.0060.03412.03
5.4.320.0040.03712.52
5.4.310.0040.04012.52
5.4.300.0090.03212.52
5.4.290.0040.03912.52
5.4.280.0030.03912.42
5.4.270.0040.03812.41
5.4.260.0070.03612.42
5.4.250.0060.03712.41
5.4.240.0020.03912.41
5.4.230.0050.03712.41
5.4.220.0050.03512.40
5.4.210.0070.03912.41
5.4.200.0030.03912.41
5.4.190.0070.03412.40
5.4.180.0060.03512.41
5.4.170.0030.04512.41
5.4.160.0030.03812.41
5.4.150.0020.03912.40
5.4.140.0040.03812.09
5.4.130.0040.03712.07
5.4.120.0040.03712.03
5.4.110.0030.03612.03
5.4.100.0100.03112.02
5.4.90.0070.03512.02
5.4.80.0060.03612.03
5.4.70.0030.03712.02
5.4.60.0030.03612.02
5.4.50.0050.03412.03
5.4.40.0070.03312.01
5.4.30.0050.03612.00
5.4.20.0070.03412.01
5.4.10.0060.03712.01
5.4.00.0050.03611.49
5.3.290.0060.03912.80
5.3.280.0030.04012.70
5.3.270.0060.04312.72
5.3.260.0060.05012.72
5.3.250.0050.03812.71
5.3.240.0060.04312.72
5.3.230.0070.05112.71
5.3.220.0050.04112.68
5.3.210.0110.04512.68
5.3.200.0080.04412.68
5.3.190.0080.04812.68
5.3.180.0060.04812.67
5.3.170.0070.04412.68
5.3.160.0060.04312.67
5.3.150.0070.04812.67
5.3.140.0060.05412.66
5.3.130.0050.05112.66
5.3.120.0110.05312.66
5.3.110.0080.05312.66
5.3.100.0050.05312.15
5.3.90.0070.04812.13
5.3.80.0060.03912.12
5.3.70.0100.04012.12
5.3.60.0050.04312.11
5.3.50.0080.03612.05
5.3.40.0070.03612.05
5.3.30.0080.03212.01
5.3.20.0070.03511.79
5.3.10.0040.03611.75
5.3.00.0100.03311.74
5.2.170.0030.0329.25
5.2.160.0040.0309.25
5.2.150.0030.0429.25
5.2.140.0090.0419.25
5.2.130.0040.0309.21
5.2.120.0040.0399.21
5.2.110.0050.0309.21
5.2.100.0030.0319.21
5.2.90.0030.0329.21
5.2.80.0040.0319.21
5.2.70.0050.0309.21
5.2.60.0020.0339.16
5.2.50.0030.0369.13
5.2.40.0080.0369.11
5.2.30.0070.0289.09
5.2.20.0030.0309.07
5.2.10.0050.0278.96
5.2.00.0040.0298.83
5.1.60.0020.0268.11
5.1.50.0050.0238.11
5.1.40.0040.0248.08
5.1.30.0040.0268.44
5.1.20.0070.0238.46
5.1.10.0020.0308.19
5.1.00.0040.0268.19
5.0.50.0040.0206.67
5.0.40.0020.0226.53
5.0.30.0050.0306.34
5.0.20.0010.0226.30
5.0.10.0040.0206.29
5.0.00.0060.0306.29
4.4.90.0040.0144.78
4.4.80.0030.0154.75
4.4.70.0010.0174.75
4.4.60.0020.0164.75
4.4.50.0020.0164.77
4.4.40.0020.0264.71
4.4.30.0030.0154.76
4.4.20.0010.0174.84
4.4.10.0050.0134.85
4.4.00.0010.0264.76
4.3.110.0040.0154.67
4.3.100.0020.0154.67
4.3.90.0020.0154.64
4.3.80.0010.0314.59
4.3.70.0040.0144.63
4.3.60.0040.0154.63
4.3.50.0020.0164.63
4.3.40.0030.0234.54
4.3.30.0020.0163.35
4.3.20.0030.0153.32
4.3.10.0000.0173.28
4.3.00.0170.0176.86

preferences:
62.47 ms | 401 KiB | 5 Q