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)
8.3.60.0170.00318.31
8.3.50.0090.01021.03
8.3.40.0070.01418.59
8.3.30.0070.00719.17
8.3.20.0040.00420.34
8.3.10.0020.00523.57
8.3.00.0040.00419.38
8.2.180.0190.00018.29
8.2.170.0070.00722.96
8.2.160.0150.00420.53
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0040.00426.16
8.2.120.0030.00522.11
8.2.110.0030.00622.04
8.2.100.0060.00617.75
8.2.90.0040.00419.17
8.2.80.0030.00517.97
8.2.70.0000.00817.63
8.2.60.0040.00418.05
8.2.50.0030.00618.07
8.2.40.0000.00920.07
8.2.30.0020.00518.04
8.2.20.0040.00417.73
8.2.10.0080.00018.27
8.2.00.0040.00417.83
8.1.280.0040.01125.92
8.1.270.0100.01322.00
8.1.260.0080.00026.35
8.1.250.0050.00228.09
8.1.240.0040.00424.02
8.1.230.0070.00719.26
8.1.220.0030.00617.74
8.1.210.0040.00418.77
8.1.200.0050.00517.22
8.1.190.0080.00017.23
8.1.180.0000.00818.10
8.1.170.0000.00818.60
8.1.160.0040.00421.93
8.1.150.0070.00018.80
8.1.140.0020.00517.44
8.1.130.0040.00417.97
8.1.120.0040.00417.39
8.1.110.0040.00417.51
8.1.100.0040.00417.57
8.1.90.0030.00517.39
8.1.80.0000.00717.49
8.1.70.0000.00717.46
8.1.60.0000.00917.56
8.1.50.0000.00917.61
8.1.40.0000.00817.53
8.1.30.0040.00417.71
8.1.20.0000.00817.59
8.1.10.0000.00717.62
8.1.00.0000.00817.54
8.0.300.0040.00418.77
8.0.290.0050.00316.75
8.0.280.0030.00318.48
8.0.270.0000.00717.34
8.0.260.0060.00017.20
8.0.250.0030.00317.01
8.0.240.0030.00316.91
8.0.230.0050.00516.89
8.0.220.0070.00016.93
8.0.210.0040.00416.91
8.0.200.0060.00016.96
8.0.190.0070.00017.05
8.0.180.0040.00416.93
8.0.170.0070.00016.88
8.0.160.0040.00416.81
8.0.150.0040.00416.89
8.0.140.0000.00716.94
8.0.130.0000.00513.34
8.0.120.0000.00816.93
8.0.110.0000.00816.95
8.0.100.0000.00716.82
8.0.90.0070.00017.04
8.0.80.0060.01216.96
8.0.70.0050.00316.76
8.0.60.0000.00716.95
8.0.50.0040.00416.83
8.0.30.0110.01217.00
8.0.20.0110.01017.40
8.0.10.0000.00717.05
8.0.00.0120.00716.66
7.4.330.0000.00515.02
7.4.320.0000.00616.62
7.4.300.0000.00716.61
7.4.290.0000.00716.61
7.4.280.0070.00016.52
7.4.270.0030.00316.56
7.4.260.0030.00316.67
7.4.250.0000.00716.57
7.4.240.0010.00616.56
7.4.230.0030.00316.64
7.4.220.0070.01716.70
7.4.210.0100.01016.70
7.4.200.0040.00316.66
7.4.160.0100.00616.67
7.4.150.0120.00617.40
7.4.140.0100.00717.86
7.4.130.0100.00716.54
7.4.120.0130.00616.56
7.4.110.0100.00716.55
7.4.100.0110.00716.63
7.4.90.0070.01416.59
7.4.80.0070.01119.39
7.4.70.0140.00716.60
7.4.60.0080.01216.71
7.4.50.0000.00816.32
7.4.40.0120.00616.40
7.4.30.0080.00816.54
7.4.10.0070.01115.02
7.4.00.0090.00614.92
7.3.330.0030.00313.36
7.3.320.0000.00613.26
7.3.310.0070.00016.38
7.3.300.0030.00316.39
7.3.290.0070.00816.38
7.3.280.0120.00816.35
7.3.270.0130.00617.40
7.3.260.0110.00616.35
7.3.250.0090.01116.52
7.3.240.0090.01216.67
7.3.230.0090.00916.47
7.3.210.0100.01316.42
7.3.200.0060.01619.39
7.3.190.0070.01016.61
7.3.180.0160.00416.25
7.3.170.0030.01316.45
7.3.160.0130.00316.58
7.3.130.0180.00014.88
7.3.120.0020.01314.82
7.3.110.0030.01414.66
7.3.100.0080.00514.96
7.3.90.0030.01014.79
7.3.80.0030.00814.70
7.3.70.0050.00514.83
7.3.60.0100.00714.86
7.3.50.0030.00914.84
7.3.40.0070.00714.77
7.3.30.0100.00314.72
7.3.20.0080.00616.77
7.3.10.0100.00516.60
7.3.00.0080.00616.60
7.2.330.0030.01616.48
7.2.320.0070.01116.38
7.2.310.0070.01016.75
7.2.300.0140.01216.54
7.2.290.0120.00616.81
7.2.260.0110.00714.78
7.2.250.0060.00815.14
7.2.240.0050.01215.25
7.2.230.0020.01214.93
7.2.220.0040.00914.96
7.2.210.0030.00815.08
7.2.200.0100.00515.10
7.2.190.0060.00914.96
7.2.180.0070.00414.93
7.2.170.0060.00714.98
7.2.160.0000.01715.13
7.2.150.0040.01116.61
7.2.140.0060.00916.82
7.2.130.0060.00916.88
7.2.120.0110.00716.93
7.2.110.0090.00616.91
7.2.100.0080.00817.02
7.2.90.0070.01016.96
7.2.80.0080.00716.82
7.2.70.0030.00917.07
7.2.60.0070.00616.70
7.2.50.0080.00416.85
7.2.40.0100.00716.71
7.2.30.0030.01016.96
7.2.20.0150.00316.90
7.2.10.0070.01016.99
7.2.00.0040.01018.27
7.1.330.0020.01115.75
7.1.320.0060.00815.72
7.1.310.0030.00815.80
7.1.300.0090.00715.73
7.1.290.0100.00115.82
7.1.280.0090.00515.79
7.1.270.0060.00715.84
7.1.260.0070.00815.73
7.1.250.0040.00815.88
7.1.240.0100.00715.88
7.1.230.0130.00315.92
7.1.220.0060.00915.75
7.1.210.0070.00715.97
7.1.200.0040.01015.79
7.1.190.0060.01015.69
7.1.180.0070.00715.60
7.1.170.0100.00615.69
7.1.160.0080.00415.57
7.1.150.0120.00415.75
7.1.140.0030.01315.99
7.1.130.0060.00915.68
7.1.120.0070.00715.82
7.1.110.0080.00815.83
7.1.100.0050.00617.24
7.1.90.0070.00715.76
7.1.80.0090.00316.00
7.1.70.0040.00616.54
7.1.60.0100.01017.32
7.1.50.0050.01116.34
7.1.40.0030.00615.81
7.1.30.0080.00615.84
7.1.20.0120.00315.83
7.1.10.0040.01215.54
7.1.00.0030.04319.02
7.0.330.0030.00815.41
7.0.320.0000.01615.34
7.0.310.0000.00915.23
7.0.300.0030.00715.22
7.0.290.0070.00315.46
7.0.280.0080.00715.28
7.0.270.0060.00315.48
7.0.260.0040.00415.50
7.0.250.0090.00615.24
7.0.240.0000.01115.62
7.0.230.0060.00615.46
7.0.220.0040.00815.41
7.0.210.0100.00015.22
7.0.200.0080.00416.22
7.0.190.0000.01315.54
7.0.180.0030.00715.30
7.0.170.0000.00915.33
7.0.160.0120.00315.38
7.0.150.0060.01115.25
7.0.140.0000.04318.68
7.0.130.0120.00015.36
7.0.120.0000.01315.50
7.0.110.0000.01215.32
7.0.100.0080.00315.46
7.0.90.0030.00615.32
7.0.80.0070.00315.50
7.0.70.0060.00815.46
7.0.60.0060.04417.65
7.0.50.0070.04116.80
7.0.40.0070.02516.83
7.0.30.0180.03416.82
7.0.20.0160.03016.81
7.0.10.0020.05116.94
7.0.00.0050.04516.85
5.6.400.0080.00814.47
5.6.390.0070.00714.31
5.6.380.0030.01014.07
5.6.370.0070.00714.57
5.6.360.0110.00314.74
5.6.350.0100.00314.61
5.6.340.0040.01214.38
5.6.330.0030.01014.70
5.6.320.0060.00914.29
5.6.310.0170.00014.18
5.6.300.0040.00714.77
5.6.290.0040.00814.25
5.6.280.0040.04217.83
5.6.270.0140.00014.17
5.6.260.0080.00314.25
5.6.250.0000.00814.37
5.6.240.0090.00314.56
5.6.230.0070.00714.30
5.6.220.0150.00314.48
5.6.210.0050.02317.51
5.6.200.0060.02616.31
5.6.190.0070.02417.57
5.6.180.0170.03517.48
5.6.170.0110.02817.52
5.6.160.0070.03217.43
5.6.150.0080.04116.33
5.6.140.0090.02216.29
5.6.130.0030.02516.36
5.6.120.0030.02617.71
5.6.110.0090.02917.83
5.6.100.0080.04817.66
5.6.90.0050.04817.78
5.6.80.0070.03317.45
5.6.70.0060.00914.13
5.6.60.0040.00714.06
5.6.50.0030.01014.22
5.6.40.0130.00314.29
5.6.30.0040.00714.70
5.6.20.0100.00314.21
5.6.10.0080.00414.49
5.6.00.0050.00514.39
5.5.380.0000.01114.40
5.5.370.0000.01414.48
5.5.360.0030.01214.06
5.5.350.1980.02617.19
5.5.340.0070.04716.15
5.5.330.0080.02517.21
5.5.320.0150.03317.28
5.5.310.0140.02317.51
5.5.300.0030.03616.22
5.5.290.0090.04216.17
5.5.280.0080.03517.50
5.5.270.0120.01817.53
5.5.260.0110.04217.75
5.5.250.0100.04517.52
5.5.240.0160.01917.36
5.5.230.0030.01014.29
5.5.220.0000.01414.46
5.5.210.0060.00914.07
5.5.200.0000.01413.98
5.5.190.0100.00014.51
5.5.180.0040.00814.14
5.5.170.0000.01414.13
5.5.160.0120.00014.42
5.5.150.0030.01014.28
5.5.140.0040.00814.55
5.5.130.0060.00314.24
5.5.120.0070.00714.03
5.5.110.0030.01214.22
5.5.100.0040.00814.26
5.5.90.0080.00614.36
5.5.80.0060.01014.13
5.5.70.0080.00514.13
5.5.60.0040.01114.08
5.5.50.0030.01013.97
5.5.40.0110.00314.20
5.5.30.0030.01314.38
5.5.20.0030.01114.29
5.5.10.0070.00714.14
5.5.00.0070.00314.36
5.4.450.0390.03915.33
5.4.440.0450.03615.45
5.4.430.0200.03015.22
5.4.420.0520.03315.29
5.4.410.0450.04615.16
5.4.400.0320.03415.13
5.4.390.0490.02814.87
5.4.380.0220.03315.27
5.4.370.0150.02314.98
5.4.360.0570.03314.99
5.4.350.0430.03115.08
5.4.340.0060.01811.55
5.4.330.0080.00311.11
5.4.320.0040.02311.81
5.4.310.0070.03611.88
5.4.300.0040.02411.79
5.4.290.0040.02411.97
5.4.280.0070.02211.74
5.4.270.0070.02011.80
5.4.260.0030.02611.73
5.4.250.0030.02411.78
5.4.240.0070.02311.82
5.4.230.0060.02111.72
5.4.220.0050.01911.56
5.4.210.0090.02111.81
5.4.200.0020.02411.74
5.4.190.0060.02111.85
5.4.180.0050.02011.77
5.4.170.0050.02611.78
5.4.160.0050.02211.77
5.4.150.0050.01911.62
5.4.140.0060.02211.48
5.4.130.0080.02311.58
5.4.120.0080.02311.55
5.4.110.0060.02611.46
5.4.100.0050.02311.44
5.4.90.0070.03011.45
5.4.80.0040.02611.59
5.4.70.0020.02711.59
5.4.60.0020.02311.59
5.4.50.0040.02411.58
5.4.40.0040.02611.55
5.4.30.0060.01911.61
5.4.20.0060.02011.60
5.4.10.0050.02011.58
5.4.00.0050.02811.22
5.3.290.0070.03912.80
5.3.280.0090.03812.71
5.3.270.0080.04012.72
5.3.260.0080.04512.72
5.3.250.0050.03912.72
5.3.240.0090.03612.72
5.3.230.0060.04412.71
5.3.220.0100.05212.68
5.3.210.0100.05112.68
5.3.200.0070.05412.68
5.3.190.0100.05012.68
5.3.180.0100.05212.68
5.3.170.0060.04412.67
5.3.160.0070.05212.67
5.3.150.0130.04212.68
5.3.140.0050.03712.66
5.3.130.0100.04012.66
5.3.120.0080.04512.66
5.3.110.0030.04312.66
5.3.100.0080.04212.14
5.3.90.0090.03512.12
5.3.80.0060.03712.11
5.3.70.0040.03812.11
5.3.60.0100.03912.09
5.3.50.0110.05112.04
5.3.40.0040.04612.04
5.3.30.0110.03312.00
5.3.20.0070.03711.79
5.3.10.0050.04511.75
5.3.00.0090.03911.73
5.2.170.0050.0329.24
5.2.160.0070.0289.24
5.2.150.0040.0339.24
5.2.140.0040.0339.23
5.2.130.0040.0319.20
5.2.120.0030.0359.20
5.2.110.0050.0319.20
5.2.100.0070.0289.20
5.2.90.0030.0319.20
5.2.80.0040.0339.19
5.2.70.0070.0289.18
5.2.60.0080.0309.15
5.2.50.0030.0329.12
5.2.40.0060.0329.10
5.2.30.0030.0329.07
5.2.20.0050.0309.05
5.2.10.0100.0288.96
5.2.00.0060.0318.83
5.1.60.0020.0278.11
5.1.50.0030.0278.11
5.1.40.0040.0308.08
5.1.30.0040.0298.44
5.1.20.0050.0258.46
5.1.10.0060.0248.19
5.1.00.0050.0278.19
5.0.50.0050.0276.67
5.0.40.0030.0226.53
5.0.30.0040.0326.34
5.0.20.0030.0206.30
5.0.10.0020.0216.29
5.0.00.0010.0336.29
4.4.90.0020.0164.78
4.4.80.0030.0154.76
4.4.70.0030.0154.76
4.4.60.0020.0164.76
4.4.50.0030.0164.77
4.4.40.0040.0264.70
4.4.30.0000.0184.76
4.4.20.0040.0154.84
4.4.10.0050.0134.85
4.4.00.0050.0374.76
4.3.110.0030.0204.67
4.3.100.0020.0154.66
4.3.90.0020.0194.63
4.3.80.0040.0224.58
4.3.70.0020.0154.63
4.3.60.0000.0174.63
4.3.50.0020.0164.63
4.3.40.0040.0224.54
4.3.30.0020.0163.35
4.3.20.0020.0163.32
4.3.10.0010.0163.28
4.3.00.0230.0136.86

preferences:
46.89 ms | 401 KiB | 5 Q