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; } $str = 's:4:"test"xxx;}'; if (is_serialized($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)
8.3.60.0140.00718.43
8.3.50.0170.00221.18
8.3.40.0070.00718.97
8.3.30.0070.00719.16
8.3.20.0040.00420.13
8.3.10.0000.00823.71
8.3.00.0080.00019.48
8.2.180.0110.01116.75
8.2.170.0060.01222.96
8.2.160.0080.00820.42
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00422.24
8.2.110.0150.00622.30
8.2.100.0080.00417.88
8.2.90.0080.00019.39
8.2.80.0050.00317.97
8.2.70.0030.00717.88
8.2.60.0050.00318.04
8.2.50.0050.00518.07
8.2.40.0080.00019.92
8.2.30.0050.00218.23
8.2.20.0000.00817.85
8.2.10.0030.00518.25
8.2.00.0060.00317.85
8.1.280.0030.01325.92
8.1.270.0060.00322.18
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0030.00624.02
8.1.230.0060.00619.38
8.1.220.0050.00317.91
8.1.210.0040.00418.77
8.1.200.0050.00517.60
8.1.190.0060.00317.60
8.1.180.0000.00818.10
8.1.170.0050.00318.89
8.1.160.0000.00722.08
8.1.150.0000.00719.00
8.1.140.0050.00217.74
8.1.130.0000.00717.81
8.1.120.0030.00417.55
8.1.110.0070.00017.61
8.1.100.0050.00217.66
8.1.90.0040.00417.66
8.1.80.0000.00817.53
8.1.70.0050.00217.53
8.1.60.0000.00817.71
8.1.50.0040.00417.62
8.1.40.0040.00417.70
8.1.30.0000.00817.77
8.1.20.0030.00617.91
8.1.10.0030.00517.73
8.1.00.0000.00817.70
8.0.300.0040.00418.77
8.0.290.0040.00417.00
8.0.280.0000.00818.42
8.0.270.0000.00717.36
8.0.260.0060.00017.23
8.0.250.0030.00317.06
8.0.240.0000.00717.03
8.0.230.0080.00017.11
8.0.220.0070.00016.98
8.0.210.0040.00417.11
8.0.200.0000.00617.12
8.0.190.0040.00417.00
8.0.180.0070.00016.99
8.0.170.0060.00317.11
8.0.160.0000.00817.13
8.0.150.0040.00417.05
8.0.140.0070.00016.93
8.0.130.0030.00313.49
8.0.120.0000.00816.88
8.0.110.0030.00516.94
8.0.100.0040.00417.08
8.0.90.0050.00216.93
8.0.80.0070.01017.12
8.0.70.0070.00016.96
8.0.60.0040.00417.11
8.0.50.0000.00817.10
8.0.30.0090.01017.19
8.0.20.0120.01017.40
8.0.10.0000.00817.07
8.0.00.0080.01216.97
7.4.330.0000.00515.14
7.4.320.0000.00616.67
7.4.300.0030.00316.65
7.4.290.0000.00716.89
7.4.280.0000.00816.85
7.4.270.0070.00016.83
7.4.260.0000.00716.76
7.4.250.0000.00716.68
7.4.240.0060.00116.80
7.4.230.0030.00316.82
7.4.220.0110.00916.69
7.4.210.0060.00816.88
7.4.200.0000.00716.78
7.4.160.0080.00816.63
7.4.150.0120.00617.40
7.4.140.0050.01517.86
7.4.130.0060.01216.72
7.4.120.0150.00616.89
7.4.110.0110.00716.85
7.4.100.0080.01216.66
7.4.90.0090.00916.48
7.4.80.0060.01019.39
7.4.70.0040.01416.70
7.4.60.0100.00716.64
7.4.50.0040.00416.79
7.4.40.0130.01016.52
7.4.30.0130.00316.64
7.4.00.0070.01015.27
7.3.330.0000.00613.37
7.3.320.0050.00013.53
7.3.310.0000.00716.44
7.3.300.0070.00016.59
7.3.290.0070.00916.54
7.3.280.0090.01016.54
7.3.270.0070.01117.40
7.3.260.0030.01416.54
7.3.250.0160.00216.59
7.3.240.0130.01016.80
7.3.230.0110.01316.80
7.3.210.0100.00716.88
7.3.200.0100.00719.39
7.3.190.0100.00716.70
7.3.180.0000.01716.70
7.3.170.0090.00616.77
7.3.160.0090.00916.80
7.3.10.0220.00616.26
7.3.00.0160.00616.54
7.2.330.0090.00916.76
7.2.320.0090.00916.80
7.2.310.0160.00917.02
7.2.300.0030.01416.84
7.2.290.0120.00916.76
7.2.130.0190.00916.71
7.2.120.0080.01516.18
7.2.110.0070.01416.53
7.2.100.0180.00316.49
7.2.90.0030.01616.81
7.2.80.0070.01316.59
7.2.70.0170.01317.15
7.2.60.0100.01017.16
7.2.50.0210.00616.50
7.2.40.0220.00816.96
7.2.30.0180.00916.61
7.2.20.0110.00816.62
7.2.10.0130.01016.86
7.2.00.0030.01018.35
7.1.250.0180.00015.57
7.1.200.0040.00415.87
7.1.100.0090.00618.43
7.1.70.0070.00017.11
7.1.60.0090.01519.11
7.1.50.0090.00617.13
7.1.00.0030.07722.39
7.0.200.0000.00816.67
7.0.140.0030.07322.10
7.0.60.0100.08020.00
7.0.50.0000.04318.02
7.0.40.0130.03320.11
7.0.30.0230.04320.23
7.0.20.0370.07720.25
7.0.10.0130.08320.27
7.0.00.0100.05320.31
5.6.280.0000.07721.08
5.6.210.0070.08320.74
5.6.200.0030.08318.20
5.6.190.0030.05320.77
5.6.180.0200.08320.34
5.6.170.0300.06020.45
5.6.160.0030.07320.56
5.6.150.0100.04718.21
5.6.140.0030.04318.28
5.6.130.0000.06018.18
5.6.120.0000.04721.16
5.6.110.0170.05721.00
5.6.100.0000.07720.97
5.6.90.0030.07320.89
5.6.80.0030.07320.29
5.6.70.4500.03720.39
5.5.350.0230.07320.34
5.5.340.0100.07318.05
5.5.330.0030.04720.41
5.5.320.0200.04020.51
5.5.310.0230.08320.46
5.5.300.0030.04317.98
5.5.290.0030.04718.04
5.5.280.0000.09020.87
5.5.270.0030.08720.84
5.5.260.0170.07020.78
5.5.250.0030.04020.52
5.5.240.0170.03720.17
5.4.450.0770.07719.20
5.4.440.0800.05719.47
5.4.430.0670.05319.60
5.4.420.0870.05319.58
5.4.410.0300.06019.08
5.4.400.0200.05319.16
5.4.390.0670.05719.26
5.4.380.0700.05319.13
5.4.370.0770.04019.29
5.4.360.0730.05718.84
5.4.350.0300.06019.30
5.4.340.0080.03712.03
5.4.320.0070.03712.52
5.4.310.0060.03712.52
5.4.300.0060.03712.52
5.4.290.0060.03912.52
5.4.280.0060.03712.41
5.4.270.0080.03512.41
5.4.260.0070.03712.41
5.4.250.0050.04012.41
5.4.240.0040.03812.42
5.4.230.0030.04112.41
5.4.220.0050.03612.41
5.4.210.0070.03812.41
5.4.200.0040.03912.41
5.4.190.0090.03312.40
5.4.180.0070.03412.41
5.4.170.0080.03412.41
5.4.160.0090.03312.40
5.4.150.0070.03412.40
5.4.140.0070.03612.09
5.4.130.0050.03612.07
5.4.120.0060.03712.03
5.4.110.0070.04112.03
5.4.100.0060.03612.03
5.4.90.0090.03712.03
5.4.80.0090.04012.03
5.4.70.0050.03512.02
5.4.60.0040.04012.02
5.4.50.0070.03712.02
5.4.40.0070.03312.02
5.4.30.0090.03212.01
5.4.20.0040.03612.01
5.4.10.0080.03712.01
5.4.00.0060.04111.49
5.3.290.0080.03712.80
5.3.280.0080.03712.71
5.3.270.0080.04412.73
5.3.260.0090.04012.72
5.3.250.0050.03812.72
5.3.240.0030.04412.72
5.3.230.0050.03812.71
5.3.220.0060.03612.68
5.3.210.0070.03712.68
5.3.200.0060.03712.68
5.3.190.0040.03912.67
5.3.180.0090.03212.68
5.3.170.0080.03312.67
5.3.160.0050.03712.67
5.3.150.0050.03712.67
5.3.140.0050.03712.66
5.3.130.0070.03812.66
5.3.120.0050.03912.66
5.3.110.0050.03912.66
5.3.100.0090.03312.15
5.3.90.0070.03512.13
5.3.80.0070.03612.12
5.3.70.0080.03312.12
5.3.60.0050.03612.11
5.3.50.0050.03712.05
5.3.40.0060.03712.05
5.3.30.0060.03312.01
5.3.20.0050.03511.79
5.3.10.0060.03411.76
5.3.00.0060.03511.75
5.2.170.0040.0309.25
5.2.160.0040.0309.25
5.2.150.0040.0319.25
5.2.140.0070.0359.25
5.2.130.0040.0299.21
5.2.120.0040.0289.20
5.2.110.0050.0289.21
5.2.100.0050.0279.21
5.2.90.0060.0309.21
5.2.80.0040.0389.20
5.2.70.0080.0279.20
5.2.60.0030.0319.16
5.2.50.0020.0349.13
5.2.40.0050.0329.12
5.2.30.0050.0309.09
5.2.20.0030.0329.07
5.2.10.0040.0288.96
5.2.00.0030.0308.84
5.1.60.0020.0268.11
5.1.50.0020.0318.11
5.1.40.0020.0298.09
5.1.30.0100.0248.43
5.1.20.0060.0318.46
5.1.10.0050.0248.19
5.1.00.0040.0258.19
5.0.50.0050.0246.67
5.0.40.0040.0266.53
5.0.30.0020.0346.34
5.0.20.0030.0196.30
5.0.10.0040.0216.29
5.0.00.0020.0336.29
4.4.90.0010.0234.78
4.4.80.0010.0214.75
4.4.70.0040.0184.75
4.4.60.0030.0184.76
4.4.50.0000.0174.77
4.4.40.0060.0274.71
4.4.30.0080.0224.76
4.4.20.0040.0204.84
4.4.10.0060.0174.85
4.4.00.0040.0274.76
4.3.110.0040.0234.67
4.3.100.0030.0234.66
4.3.90.0020.0164.63
4.3.80.0080.0264.58
4.3.70.0040.0134.63
4.3.60.0050.0134.63
4.3.50.0020.0174.63
4.3.40.0060.0234.54
4.3.30.0060.0143.35
4.3.20.0040.0143.33
4.3.10.0000.0193.28
4.3.00.0100.0306.86

preferences:
64.91 ms | 401 KiB | 5 Q