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)
8.3.60.0040.01418.30
8.3.50.0120.00316.39
8.3.40.0170.00318.96
8.3.30.0100.00319.27
8.3.20.0040.00420.34
8.3.10.0040.00421.90
8.3.00.0080.00019.50
8.2.180.0110.01116.63
8.2.170.0070.01122.96
8.2.160.0060.00920.52
8.2.150.0000.00824.18
8.2.140.0090.00024.66
8.2.130.0080.00026.16
8.2.120.0030.00522.23
8.2.110.0110.00722.01
8.2.100.0090.00317.88
8.2.90.0060.00319.17
8.2.80.0040.00417.97
8.2.70.0050.00317.75
8.2.60.0060.00317.93
8.2.50.0050.00418.07
8.2.40.0040.00418.34
8.2.30.0040.00418.13
8.2.20.0040.00417.82
8.2.10.0070.00018.13
8.2.00.0040.00417.91
8.1.280.0090.00625.92
8.1.270.0030.00622.38
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00423.96
8.1.230.0040.00819.39
8.1.220.0000.00817.77
8.1.210.0050.00318.77
8.1.200.0060.00317.60
8.1.190.0000.00817.60
8.1.180.0040.00418.10
8.1.170.0030.00618.96
8.1.160.0040.00422.03
8.1.150.0000.00819.01
8.1.140.0040.00417.64
8.1.130.0000.00717.92
8.1.120.0050.00217.68
8.1.110.0070.00017.66
8.1.100.0050.00217.73
8.1.90.0000.00817.64
8.1.80.0000.00817.66
8.1.70.0030.00317.62
8.1.60.0030.00617.72
8.1.50.0040.00417.77
8.1.40.0000.00817.61
8.1.30.0030.00517.84
8.1.20.0040.00417.69
8.1.10.0060.00317.63
8.1.00.0000.00817.74
8.0.300.0000.00818.77
8.0.290.0000.00717.00
8.0.280.0000.00718.38
8.0.270.0030.00317.32
8.0.260.0000.00717.32
8.0.250.0040.00417.16
8.0.240.0000.00717.01
8.0.230.0070.00317.06
8.0.220.0070.00017.12
8.0.210.0040.00417.10
8.0.200.0000.00717.12
8.0.190.0000.00817.04
8.0.180.0000.00817.07
8.0.170.0040.00416.96
8.0.160.0070.00017.10
8.0.150.0080.00016.88
8.0.140.0000.00717.02
8.0.130.0030.00313.52
8.0.120.0040.00417.01
8.0.110.0040.00416.89
8.0.100.0070.00017.07
8.0.90.0080.00017.08
8.0.80.0130.00317.04
8.0.70.0040.00417.14
8.0.60.0040.00416.96
8.0.50.0070.00017.13
8.0.30.0130.00817.07
8.0.20.0120.00617.40
8.0.10.0030.00517.24
8.0.00.0090.00916.93
7.4.330.0000.00515.16
7.4.320.0070.00016.61
7.4.300.0070.00016.82
7.4.290.0030.00316.71
7.4.280.0030.00616.78
7.4.270.0080.00016.87
7.4.260.0030.00316.75
7.4.250.0000.00816.75
7.4.240.0040.00416.80
7.4.230.0080.00016.87
7.4.220.0060.01216.87
7.4.210.0030.01316.92
7.4.200.0000.00716.75
7.4.160.0090.00616.75
7.4.150.0150.00317.40
7.4.140.0060.01117.86
7.4.130.0100.00716.79
7.4.120.0130.01216.70
7.4.110.0140.01116.79
7.4.100.0150.00416.88
7.4.90.0120.00916.71
7.4.80.0040.01619.39
7.4.70.0150.00616.83
7.4.60.0030.01616.75
7.4.50.0060.00316.63
7.4.40.0030.01316.59
7.4.30.0100.00816.77
7.4.00.0060.00615.18
7.3.330.0030.00313.36
7.3.320.0030.00313.37
7.3.310.0040.00416.59
7.3.300.0040.00416.45
7.3.290.0110.00416.54
7.3.280.0080.00816.56
7.3.270.0220.00017.40
7.3.260.0070.01116.50
7.3.250.0070.00916.65
7.3.240.0060.01516.91
7.3.230.0000.01916.47
7.3.210.0150.00316.87
7.3.200.0130.00319.39
7.3.190.0180.00316.80
7.3.180.0130.00316.80
7.3.170.0110.00516.52
7.3.160.0120.00616.48
7.2.330.0200.00316.83
7.2.320.0090.01516.91
7.2.310.0130.00316.79
7.2.300.0070.01016.71
7.2.290.0130.00616.86
7.2.00.0030.00919.63
7.1.100.0030.00618.55
7.1.70.0000.00917.45
7.1.60.0140.01119.19
7.1.50.0040.01917.20
7.1.00.0030.07722.36
7.0.200.0060.00317.00
7.0.140.0070.06321.95
7.0.60.0170.03019.96
7.0.50.0030.04017.80
7.0.40.0200.06320.29
7.0.30.0270.06020.17
7.0.20.0370.05720.31
7.0.10.0130.06020.26
7.0.00.0070.04720.18
5.6.280.0000.07721.17
5.6.210.0100.06320.71
5.6.200.0030.07018.16
5.6.190.0000.09320.46
5.6.180.0270.08320.55
5.6.170.0300.07320.51
5.6.160.0070.07320.71
5.6.150.0100.05318.24
5.6.140.0100.08018.15
5.6.130.0130.07718.28
5.6.120.0130.07321.16
5.6.110.0000.04721.05
5.6.100.0000.04321.06
5.6.90.0070.06720.98
5.6.80.0200.04720.40
5.5.350.2270.03720.48
5.5.340.0030.03718.02
5.5.330.0130.04320.41
5.5.320.0330.04720.35
5.5.310.0300.04720.31
5.5.300.0070.04017.97
5.5.290.0070.03717.98
5.5.280.0130.04720.91
5.5.270.0000.04320.78
5.5.260.0130.08020.91
5.5.250.0100.07720.71
5.5.240.0130.04020.18
5.4.450.1930.03719.48
5.4.440.1870.04719.40
5.4.430.1900.03319.38
5.4.420.1800.03719.45
5.4.410.2300.05019.18
5.4.400.2270.04718.85
5.4.390.2230.03319.31
5.4.380.2270.04719.19
5.4.370.0230.03318.95
5.4.360.0300.03718.86
5.4.350.0170.03718.95
5.4.340.0230.05719.15
5.4.320.0170.05319.07
5.4.310.0070.04719.21
5.4.300.0130.04019.22
5.4.290.0130.04019.09
5.4.280.0130.04019.11
5.4.270.0200.03319.24
5.4.260.0200.03319.13
5.4.250.0130.04019.13
5.4.240.0100.04718.95
5.4.230.0200.03319.07
5.4.220.0170.04719.13
5.4.210.0200.04319.16
5.4.200.0200.03319.21
5.4.190.0230.03319.12
5.4.180.0070.03319.08
5.4.170.0170.03319.15
5.4.160.0200.03718.84
5.4.150.0200.03318.93
5.4.140.0130.04016.41
5.4.130.0230.02716.54
5.4.120.0200.03016.42
5.4.110.0200.03316.52
5.4.100.0170.04016.46
5.4.90.0200.03016.61
5.4.80.0130.04316.23
5.4.70.0170.03316.39
5.4.60.0170.03316.44
5.4.50.0200.03016.34
5.4.40.0200.03016.49
5.4.30.0100.04016.37
5.4.20.0170.03316.37
5.4.10.0270.03716.38
5.4.00.0130.04015.94
5.3.290.0200.03314.68
5.3.280.0200.03714.70
5.3.270.0030.03714.61
5.3.260.0030.03714.53
5.3.250.0700.03314.52
5.3.240.1200.04014.73
5.3.230.2000.04314.71
5.3.220.1730.03714.66
5.3.210.1900.03314.50
5.3.200.1800.04014.60
5.3.190.2200.04714.51
5.3.180.2230.03314.63
5.3.170.2170.04314.56
5.3.160.1970.03314.59
5.3.150.1770.03714.73
5.3.140.1930.03314.66
5.3.130.2070.03314.53
5.3.120.2000.03314.54
5.3.110.2370.03714.57
5.3.100.2270.04314.14
5.3.90.1900.03313.95
5.3.80.2130.04314.04
5.3.70.1900.04313.96
5.3.60.1930.04014.07
5.3.50.1900.03313.99
5.3.40.2100.04713.88
5.3.30.2070.03714.15
5.3.20.2200.04013.69
5.3.10.1830.04013.59
5.3.00.2230.03313.59
5.2.170.1730.03011.07
5.2.160.1770.03011.07
5.2.150.1800.04011.10
5.2.140.1630.03011.24
5.2.130.1600.02711.05
5.2.120.1900.03711.21
5.2.110.1530.03311.10
5.2.100.1830.03011.13
5.2.90.0100.05311.27
5.2.80.0000.03711.05
5.2.70.0000.05311.34
5.2.60.1270.03011.19
5.2.50.1570.02710.95
5.2.40.1470.03311.00
5.2.30.1430.03711.05
5.2.20.1570.03310.99
5.2.10.1500.03010.80
5.2.00.1300.02310.64
5.1.60.1430.03310.02
5.1.50.1470.03010.00
5.1.40.1430.0309.98
5.1.30.1430.04010.47
5.1.20.1370.03710.27
5.1.10.1530.02710.25
5.1.00.0070.04710.07
5.0.50.0000.0208.48
5.0.40.0000.0438.33
5.0.30.0070.0638.34
5.0.20.0000.0208.38
5.0.10.0000.0338.26
5.0.00.0200.0338.12
4.4.90.0700.0138.10
4.4.80.0770.0238.10
4.4.70.0670.0178.10
4.4.60.0730.0238.10
4.4.50.0700.0208.10
4.4.40.0700.0208.10
4.4.30.0870.0238.10
4.4.20.0770.0178.10
4.4.10.0630.0178.10
4.4.00.0770.0308.10
4.3.110.0870.0208.10
4.3.100.0730.0178.10
4.3.90.0630.0138.10
4.3.80.0700.0278.10
4.3.70.0670.0178.10
4.3.60.0770.0178.10
4.3.50.0630.0138.10
4.3.40.0830.0378.10
4.3.30.0400.0238.10
4.3.20.0330.0208.10
4.3.10.0130.0178.10
4.3.00.0000.0178.10

preferences:
39.39 ms | 400 KiB | 5 Q