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)
8.3.60.0060.01518.68
8.3.50.0100.01121.21
8.3.40.0090.00618.91
8.3.30.0000.01419.21
8.3.20.0040.00419.97
8.3.10.0050.00223.65
8.3.00.0030.00619.50
8.2.180.0100.01017.00
8.2.170.0090.00922.96
8.2.160.0130.00720.38
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0000.00822.32
8.2.110.0030.00619.41
8.2.100.0130.00318.16
8.2.90.0000.00818.28
8.2.80.0000.00817.97
8.2.70.0030.00717.75
8.2.60.0040.00418.04
8.2.50.0060.00318.07
8.2.40.0000.00718.34
8.2.30.0080.00018.25
8.2.20.0060.00317.98
8.2.10.0040.00418.25
8.2.00.0080.00017.80
8.1.280.0060.01225.92
8.1.270.0130.01022.25
8.1.260.0000.00726.35
8.1.250.0000.00828.09
8.1.240.0100.00022.16
8.1.230.0120.00020.96
8.1.220.0050.00317.89
8.1.210.0050.00318.94
8.1.200.0040.00417.60
8.1.190.0000.00817.48
8.1.180.0040.00418.10
8.1.170.0000.00818.91
8.1.160.0000.00722.13
8.1.150.0040.00419.02
8.1.140.0070.00017.55
8.1.130.0060.00317.82
8.1.120.0000.00717.63
8.1.110.0040.00417.64
8.1.100.0040.00417.55
8.1.90.0000.00817.68
8.1.80.0030.00317.64
8.1.70.0040.00417.59
8.1.60.0030.00617.84
8.1.50.0030.00517.70
8.1.40.0000.00817.75
8.1.30.0030.00517.87
8.1.20.0080.00017.82
8.1.10.0000.00817.70
8.1.00.0000.00817.77
8.0.300.0040.00420.16
8.0.290.0000.00717.00
8.0.280.0050.00318.50
8.0.270.0000.00717.31
8.0.260.0030.00317.30
8.0.250.0030.00317.17
8.0.240.0030.00317.11
8.0.230.0110.00017.14
8.0.220.0030.00317.07
8.0.210.0000.00817.00
8.0.200.0000.00617.09
8.0.190.0030.00617.20
8.0.180.0020.00517.02
8.0.170.0030.00617.10
8.0.160.0000.00717.09
8.0.150.0040.00417.02
8.0.140.0040.00416.93
8.0.130.0060.00013.50
8.0.120.0050.00217.04
8.0.110.0030.00517.00
8.0.100.0040.00416.97
8.0.90.0000.00716.91
8.0.80.0190.00317.02
8.0.70.0040.00416.97
8.0.60.0040.00416.86
8.0.50.0040.00417.13
8.0.30.0120.01217.39
8.0.20.0120.00717.40
8.0.10.0070.00017.23
8.0.00.0120.00816.96
7.4.330.0000.00515.05
7.4.320.0030.00316.86
7.4.300.0000.00616.61
7.4.290.0000.00716.83
7.4.280.0000.00716.75
7.4.270.0070.00016.86
7.4.260.0090.00016.73
7.4.250.0040.00416.79
7.4.240.0020.00516.84
7.4.230.0000.00716.87
7.4.220.0070.01016.92
7.4.210.0120.00416.95
7.4.200.0070.00016.83
7.4.160.0090.00616.60
7.4.150.0110.00817.40
7.4.140.0110.00717.86
7.4.130.0040.01516.63
7.4.120.0100.01016.70
7.4.110.0100.01016.74
7.4.100.0080.01616.88
7.4.90.0070.01016.61
7.4.80.0140.00319.39
7.4.70.0080.00816.83
7.4.60.0120.00616.87
7.4.50.0000.00616.79
7.4.40.0070.01016.47
7.4.30.0100.01316.69
7.4.10.0100.00614.76
7.4.00.0050.01115.29
7.3.330.0030.00313.44
7.3.320.0000.00513.56
7.3.310.0000.00716.62
7.3.300.0000.00716.55
7.3.290.0070.01016.54
7.3.280.0050.01116.57
7.3.270.0140.00717.40
7.3.260.0170.00016.47
7.3.250.0120.00516.70
7.3.240.0130.01216.85
7.3.230.0170.00416.69
7.3.210.0030.01516.54
7.3.200.0110.01119.39
7.3.190.0080.01116.72
7.3.180.0070.01016.67
7.3.170.0030.01316.63
7.3.160.0080.00816.82
7.3.130.0000.01815.37
7.3.120.0070.01114.96
7.3.110.0060.01214.70
7.3.100.0030.00515.04
7.3.90.0030.00615.10
7.3.80.0070.01014.97
7.3.70.0090.00314.81
7.3.60.0040.00414.88
7.3.50.0060.00615.00
7.3.40.0060.00615.10
7.3.30.0000.00914.95
7.3.20.0000.00916.70
7.3.10.0030.00716.85
7.3.00.0060.00616.91
7.2.330.0100.00916.80
7.2.320.0160.00316.86
7.2.310.0280.03016.78
7.2.300.0080.00816.76
7.2.290.0110.00816.91
7.2.260.0080.01115.12
7.2.250.0070.01015.20
7.2.240.0090.00615.45
7.2.230.0110.00415.20
7.2.220.0060.00615.25
7.2.210.0040.00815.36
7.2.200.0030.00915.12
7.2.190.0130.00015.26
7.2.180.0000.01115.10
7.2.170.0000.01115.28
7.2.160.0000.01315.21
7.2.150.0080.00417.31
7.2.140.0070.00717.02
7.2.130.0040.01117.29
7.2.120.0070.00717.25
7.2.110.0070.01017.02
7.2.100.0080.00317.31
7.2.90.0090.00917.00
7.2.80.0080.00416.98
7.2.70.0040.00817.08
7.2.60.0040.00617.05
7.2.50.0030.01117.09
7.2.40.0090.00917.13
7.2.30.0060.00917.18
7.2.20.0030.01317.27
7.2.10.0030.01517.16
7.2.00.0040.01416.98
7.1.330.0070.00715.94
7.1.320.0030.00715.88
7.1.310.0060.00615.96
7.1.300.0100.00315.84
7.1.290.0030.00715.89
7.1.280.0100.00315.96
7.1.270.0000.01315.97
7.1.260.0030.00916.06
7.1.250.0080.00015.88
7.1.240.0040.01115.96
7.1.230.0030.01316.13
7.1.220.0040.00715.91
7.1.210.0120.00616.03
7.1.200.0040.00615.86
7.1.190.0130.00316.17
7.1.180.0140.00015.73
7.1.170.0040.00815.96
7.1.160.0070.00715.92
7.1.150.0060.00916.16
7.1.140.0100.00315.71
7.1.130.0030.01015.96
7.1.120.0030.01316.05
7.1.110.0060.00315.91
7.1.100.0060.00915.91
7.1.90.0070.01015.80
7.1.80.0090.00615.68
7.1.70.0050.00516.69
7.1.60.0100.01017.52
7.1.50.0080.01016.51
7.1.40.0130.00315.75
7.1.30.0030.00916.02
7.1.20.0030.01015.96
7.1.10.0060.00915.82
7.1.00.0040.04019.22
7.0.330.0080.00315.40
7.0.320.0070.01015.45
7.0.310.0080.00315.76
7.0.300.0030.01415.75
7.0.290.0090.00015.64
7.0.280.0030.00915.68
7.0.270.0040.00415.71
7.0.260.0100.00315.32
7.0.250.0120.00315.62
7.0.240.0030.00715.70
7.0.230.0080.00415.65
7.0.220.0040.00715.64
7.0.210.0070.00715.66
7.0.200.0070.00516.18
7.0.190.0030.01415.44
7.0.180.0040.00815.80
7.0.170.0000.01215.80
7.0.160.0110.00315.57
7.0.150.0040.01115.76
7.0.140.0060.03818.93
7.0.130.0040.00415.63
7.0.120.0060.01015.70
7.0.110.0000.01215.51
7.0.100.0040.04217.69
7.0.90.0110.02417.69
7.0.80.0220.04517.88
7.0.70.0050.03817.81
7.0.60.0080.02717.86
7.0.50.0150.03318.04
7.0.40.0050.04017.00
7.0.30.0080.04016.77
7.0.20.0110.03916.98
7.0.10.0080.04316.92
7.0.00.0070.03216.95
5.6.400.0030.00614.67
5.6.390.0070.01014.65
5.6.380.0030.00714.72
5.6.370.0080.00414.12
5.6.360.0120.00614.93
5.6.350.0060.01214.45
5.6.340.0030.00614.79
5.6.330.0040.01114.33
5.6.320.0100.00614.44
5.6.310.0090.00314.11
5.6.300.0070.01014.67
5.6.290.0030.01414.62
5.6.280.0030.04017.80
5.6.270.0090.00614.57
5.6.260.0120.00414.56
5.6.250.0090.02117.54
5.6.240.0100.03717.49
5.6.230.0070.04717.63
5.6.220.0020.03017.61
5.6.210.0070.04817.63
5.6.200.0130.02117.86
5.6.190.0050.04617.89
5.6.180.0140.03017.86
5.6.170.0050.04617.86
5.6.160.0080.02317.85
5.6.150.0080.03717.90
5.6.140.0070.02017.74
5.6.130.0080.04217.78
5.6.120.0110.03817.65
5.6.110.0070.03617.85
5.6.100.0080.04217.94
5.6.90.0100.04117.74
5.6.80.0050.03817.30
5.6.70.0070.03717.38
5.6.60.0050.03617.39
5.6.50.0050.04717.47
5.6.40.0110.04017.56
5.6.30.0070.02717.44
5.6.20.0070.04517.42
5.6.10.0090.04217.45
5.6.00.0050.03617.41
5.5.380.0050.03017.45
5.5.370.0080.02817.48
5.5.360.0050.04517.42
5.5.350.0070.02317.38
5.5.340.0000.04717.56
5.5.330.0050.02717.79
5.5.320.0040.02517.43
5.5.310.0040.03617.83
5.5.300.0070.03217.48
5.5.290.0060.03017.59
5.5.280.0120.03517.77
5.5.270.0030.03117.71
5.5.260.0070.03717.74
5.5.250.0080.02317.63
5.5.240.0030.04717.45
5.5.230.0080.03317.05
5.5.220.0060.02617.37
5.5.210.0040.02417.33
5.5.200.0080.02517.29
5.5.190.0070.03417.38
5.5.180.0090.03817.28
5.5.170.0060.00914.17
5.5.160.0090.04417.32
5.5.150.0050.03517.21
5.5.140.0070.04417.26
5.5.130.0060.03217.38
5.5.120.0100.03717.42
5.5.110.0050.02617.30
5.5.100.0030.04517.34
5.5.90.0090.04217.31
5.5.80.0080.04217.04
5.5.70.0050.02217.29
5.5.60.0050.02717.07
5.5.50.0070.04717.34
5.5.40.0090.03817.22
5.5.30.0030.04017.23
5.5.20.0050.02417.28
5.5.10.0100.02017.36
5.5.00.0060.04217.21
5.4.450.0080.02315.41
5.4.440.0050.02315.39
5.4.430.0050.04015.28
5.4.420.0130.03215.51
5.4.410.0030.04115.31
5.4.400.0070.02315.10
5.4.390.0080.03515.21
5.4.380.0060.02515.06
5.4.370.0070.04615.13
5.4.360.0050.02815.25
5.4.350.0030.04414.93
5.4.340.0050.02015.15
5.4.330.0070.00311.42
5.4.320.0030.02515.17
5.4.310.0060.03515.14
5.4.300.0030.04015.26
5.4.290.0030.02915.09
5.4.280.0080.04215.21
5.4.270.0080.03215.14
5.4.260.0030.02515.14
5.4.250.0070.04015.10
5.4.240.0050.02315.18
5.4.230.0050.03015.09
5.4.220.0020.02415.09
5.4.210.0030.02315.30
5.4.200.0000.03214.98
5.4.190.0020.04015.06
5.4.180.0000.04215.29
5.4.170.0070.02015.04
5.4.160.0000.04214.90
5.4.150.0060.03415.01
5.4.140.0040.02113.77
5.4.130.0020.04113.94
5.4.120.0000.02813.61
5.4.110.0060.03613.66
5.4.100.0060.02313.84
5.4.90.0030.03613.93
5.4.80.0050.02413.70
5.4.70.0070.02213.80
5.4.60.0060.02013.71
5.4.50.0070.02813.73
5.4.40.0050.03713.54
5.4.30.0030.02713.71
5.4.20.0070.02913.77
5.4.10.0080.02513.83
5.4.00.0070.03113.40
5.3.290.0070.05714.75
5.3.280.0030.04014.58
5.3.270.0070.07714.71
5.3.260.0130.06714.76
5.3.250.0070.07014.73
5.3.240.0070.03714.68
5.3.230.0070.03714.72
5.3.220.0070.07714.57
5.3.210.0100.05014.69
5.3.200.0100.06014.51
5.3.190.0070.07314.59
5.3.180.0070.07714.72
5.3.170.0030.07314.65
5.3.160.0070.03714.71
5.3.150.0100.03714.51
5.3.140.0130.05714.68
5.3.130.0070.06714.57
5.3.120.0000.08014.52
5.3.110.0070.03714.53
5.3.100.0030.03714.12
5.3.90.0070.04313.96
5.3.80.0070.07014.04
5.3.70.0030.07314.14
5.3.60.0070.04313.92
5.3.50.0070.04313.90
5.3.40.0100.07013.99
5.3.30.0170.06013.98
5.3.20.0030.07713.83
5.3.10.0130.05713.68
5.3.00.0030.07013.72
5.2.170.0100.04712.31
5.2.160.0070.05012.31
5.2.150.0030.07012.31
5.2.140.0130.05712.31
5.2.130.0130.04712.31
5.2.120.0070.06012.31
5.2.110.0100.06012.31
5.2.100.0070.05012.31
5.2.90.0000.06312.31
5.2.80.0100.04012.31
5.2.70.0030.06312.31
5.2.60.0000.06012.31
5.2.50.0100.04012.31
5.2.40.0030.05312.31
5.2.30.0000.06712.31
5.2.20.0030.06012.31
5.2.10.0070.05012.31
5.2.00.0100.05312.31
5.1.60.0000.03312.31
5.1.50.0000.04012.31
5.1.40.0030.05312.31
5.1.30.0000.06012.31
5.1.20.0070.05312.31
5.1.10.0070.05312.31
5.1.00.0070.05312.31
5.0.50.0070.04012.31
5.0.40.0030.02312.31
5.0.30.0000.06312.31
5.0.20.0070.02012.31
5.0.10.0030.04312.31
5.0.00.0000.07012.31
4.4.90.0030.02012.31
4.4.80.0070.03712.31
4.4.70.0000.03712.31
4.4.60.0000.03012.31
4.4.50.0000.02312.31
4.4.40.0100.04712.31
4.4.30.0070.03312.31
4.4.20.0070.01312.31
4.4.10.0000.04012.31
4.4.00.0000.05012.31
4.3.110.0030.03712.31
4.3.100.0030.03312.31
4.3.90.0030.03312.31
4.3.80.0100.04712.31
4.3.70.0000.03012.31
4.3.60.0030.03012.31
4.3.50.0030.03012.31
4.3.40.0000.02712.31
4.3.30.0000.03712.31
4.3.20.0000.03712.31
4.3.10.0030.02712.31
4.3.00.0000.03712.31

preferences:
53.48 ms | 400 KiB | 5 Q