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)
8.3.60.0160.00618.18
8.3.50.0060.01316.30
8.3.40.0040.01118.73
8.3.30.0100.00319.13
8.3.20.0040.00420.18
8.3.10.0080.00023.65
8.3.00.0040.00419.26
8.2.180.0100.01318.29
8.2.170.0120.00622.96
8.2.160.0060.01320.36
8.2.150.0040.00424.18
8.2.140.0050.00524.66
8.2.130.0050.00326.16
8.2.120.0040.00422.24
8.2.110.0000.01120.54
8.2.100.0090.00317.75
8.2.90.0000.00719.17
8.2.80.0040.00417.97
8.2.70.0060.00317.50
8.2.60.0050.00318.03
8.2.50.0030.00618.07
8.2.40.0040.00418.22
8.2.30.0000.00818.26
8.2.20.0070.00017.83
8.2.10.0000.00718.15
8.2.00.0080.00017.79
8.1.280.0080.00825.92
8.1.270.0070.00322.25
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.00823.97
8.1.230.0000.01219.13
8.1.220.0000.00817.77
8.1.210.0000.00718.77
8.1.200.0090.00017.22
8.1.190.0050.00317.22
8.1.180.0000.00818.10
8.1.170.0000.00818.64
8.1.160.0040.00421.99
8.1.150.0070.00018.84
8.1.140.0040.00417.49
8.1.130.0000.00717.88
8.1.120.0050.00217.40
8.1.110.0040.00417.40
8.1.100.0000.00717.46
8.1.90.0040.00417.49
8.1.80.0000.00717.49
8.1.70.0070.00017.45
8.1.60.0030.00617.54
8.1.50.0030.00517.60
8.1.40.0000.00817.57
8.1.30.0040.00417.75
8.1.20.0050.00317.62
8.1.10.0040.00417.63
8.1.00.0050.00217.52
8.0.300.0030.00618.77
8.0.290.0040.00416.75
8.0.280.0030.00318.44
8.0.270.0000.00717.13
8.0.260.0030.00317.31
8.0.250.0030.00316.90
8.0.240.0000.00717.05
8.0.230.0030.00716.86
8.0.220.0000.00716.89
8.0.210.0080.00016.82
8.0.200.0030.00317.00
8.0.190.0040.00417.00
8.0.180.0040.00416.96
8.0.170.0000.00816.98
8.0.160.0070.00016.95
8.0.150.0040.00416.95
8.0.140.0040.00416.80
8.0.130.0060.00013.35
8.0.120.0000.00816.93
8.0.110.0030.00616.92
8.0.100.0070.00016.90
8.0.90.0040.00416.82
8.0.80.0100.00616.90
8.0.70.0000.00816.82
8.0.60.0040.00416.74
8.0.50.0040.00416.99
8.0.30.0080.01517.08
8.0.20.0160.00317.40
8.0.10.0040.00417.00
8.0.00.0030.01616.90
7.4.330.0050.00015.09
7.4.320.0030.00316.55
7.4.300.0030.00316.65
7.4.290.0000.00716.56
7.4.280.0040.00416.59
7.4.270.0050.00216.49
7.4.260.0070.00016.64
7.4.250.0050.00316.61
7.4.240.0020.00616.59
7.4.230.0030.00316.57
7.4.220.0030.01616.68
7.4.210.0000.02016.68
7.4.200.0050.00316.57
7.4.160.0060.00916.61
7.4.150.0090.01417.40
7.4.140.0050.01417.86
7.4.130.0080.01316.51
7.4.120.0090.01316.59
7.4.110.0060.01216.62
7.4.100.0090.00916.62
7.4.90.0100.00816.43
7.4.80.0070.01019.39
7.4.70.0090.00916.63
7.4.60.0100.01416.50
7.4.50.0000.00416.23
7.4.40.0070.01516.38
7.4.30.0150.00616.59
7.4.00.0030.00615.15
7.3.330.0000.00613.18
7.3.320.0000.00513.26
7.3.310.0030.00316.55
7.3.300.0000.00716.41
7.3.290.0040.01016.39
7.3.280.0130.00916.36
7.3.270.0100.00717.40
7.3.260.0160.00716.75
7.3.250.0050.01216.49
7.3.240.0040.01816.34
7.3.230.0070.01016.39
7.3.210.0070.01016.67
7.3.200.0060.01119.39
7.3.190.0110.00716.38
7.3.180.0060.01016.63
7.3.170.0000.01516.59
7.3.160.0030.01316.41
7.3.10.0120.00616.26
7.3.00.0130.00616.32
7.2.330.0110.00816.52
7.2.320.0130.00416.40
7.2.310.0130.00516.69
7.2.300.0130.01016.38
7.2.290.0180.00616.89
7.2.130.0120.00616.68
7.2.120.0160.00816.82
7.2.110.0130.01316.30
7.2.100.0210.00416.67
7.2.90.0200.01216.88
7.2.80.0140.00916.67
7.2.70.0090.01416.59
7.2.60.0090.01116.85
7.2.50.0080.01716.26
7.2.40.0100.01016.25
7.2.30.0140.01416.67
7.2.20.0140.01416.97
7.2.10.0070.01816.30
7.2.00.0060.00917.92
7.1.250.0150.00715.32
7.1.200.0080.00615.94
7.1.100.0060.00918.30
7.1.70.0030.00317.17
7.1.60.0140.01019.11
7.1.50.0100.01417.08
7.1.00.0100.07022.43
7.0.200.0030.00616.98
7.0.140.0030.06722.02
7.0.60.0170.08320.02
7.0.50.0070.08017.88
7.0.40.0100.04020.23
7.0.30.0230.03320.30
7.0.20.0330.06720.06
7.0.10.0070.09020.09
7.0.00.0070.07320.25
5.6.280.0030.07320.92
5.6.210.0170.07020.58
5.6.200.0030.04018.25
5.6.190.0030.04320.55
5.6.180.0270.07720.51
5.6.170.0470.04720.55
5.6.160.0070.08720.71
5.6.150.0100.08318.19
5.6.140.0000.09018.15
5.6.130.0070.03718.17
5.6.120.0100.05021.02
5.6.110.0130.08020.91
5.6.100.0000.04720.99
5.6.90.0130.07320.99
5.6.80.0070.06320.39
5.6.70.4470.04020.29
5.5.350.0200.08020.35
5.5.340.0070.06318.04
5.5.330.0170.04720.34
5.5.320.0300.04020.30
5.5.310.0130.04320.36
5.5.300.0030.04317.98
5.5.290.0100.08018.06
5.5.280.0100.08320.89
5.5.270.0030.06720.65
5.5.260.0000.05020.90
5.5.250.0130.07020.48
5.5.240.0200.06320.29
5.4.450.0900.08319.59
5.4.440.0830.05319.38
5.4.430.1100.05319.41
5.4.420.0670.05019.47
5.4.410.0200.05019.26
5.4.400.0770.05719.22
5.4.390.0770.07018.84
5.4.380.0700.06319.12
5.4.370.0700.06019.30
5.4.360.0730.05019.13
5.4.350.0670.05319.12
5.4.340.0060.04112.02
5.4.320.0040.03712.52
5.4.310.0030.04012.52
5.4.300.0040.03712.52
5.4.290.0040.03812.51
5.4.280.0040.03612.42
5.4.270.0060.03812.42
5.4.260.0040.03912.41
5.4.250.0040.04012.41
5.4.240.0060.03512.41
5.4.230.0040.03812.40
5.4.220.0060.03512.40
5.4.210.0040.03612.41
5.4.200.0080.03412.40
5.4.190.0050.03612.40
5.4.180.0090.03212.41
5.4.170.0030.03712.41
5.4.160.0040.03612.41
5.4.150.0040.03612.41
5.4.140.0060.03612.09
5.4.130.0070.03912.07
5.4.120.0070.03312.03
5.4.110.0050.03512.03
5.4.100.0080.03212.03
5.4.90.0050.03712.03
5.4.80.0070.03412.02
5.4.70.0070.03212.02
5.4.60.0040.03512.03
5.4.50.0040.03612.03
5.4.40.0040.03512.01
5.4.30.0070.03312.01
5.4.20.0080.03112.01
5.4.10.0060.03412.01
5.4.00.0070.03511.49
5.3.290.0030.04212.80
5.3.280.0040.03912.71
5.3.270.0070.03712.72
5.3.260.0060.03912.72
5.3.250.0050.03812.72
5.3.240.0050.03812.72
5.3.230.0070.03612.71
5.3.220.0060.03812.68
5.3.210.0040.04612.68
5.3.200.0080.04012.68
5.3.190.0080.03912.68
5.3.180.0060.03912.67
5.3.170.0070.04012.67
5.3.160.0080.04712.68
5.3.150.0060.04812.67
5.3.140.0040.03812.66
5.3.130.0060.03912.66
5.3.120.0090.03512.66
5.3.110.0040.03912.66
5.3.100.0050.03612.13
5.3.90.0060.03512.12
5.3.80.0050.03612.11
5.3.70.0050.03612.11
5.3.60.0050.03712.09
5.3.50.0080.03312.04
5.3.40.0050.03612.04
5.3.30.0070.03312.00
5.3.20.0060.04211.78
5.3.10.0070.03311.75
5.3.00.0080.03411.73
5.2.170.0040.0319.24
5.2.160.0080.0299.24
5.2.150.0050.0349.23
5.2.140.0060.0299.23
5.2.130.0060.0289.20
5.2.120.0020.0319.20
5.2.110.0050.0299.20
5.2.100.0070.0369.20
5.2.90.0050.0289.20
5.2.80.0050.0299.19
5.2.70.0050.0299.19
5.2.60.0030.0319.15
5.2.50.0050.0299.12
5.2.40.0040.0289.10
5.2.30.0040.0319.06
5.2.20.0040.0299.05
5.2.10.0060.0378.96
5.2.00.0070.0358.83
5.1.60.0040.0248.11
5.1.50.0040.0258.11
5.1.40.0030.0258.08
5.1.30.0040.0268.44
5.1.20.0050.0278.46
5.1.10.0050.0258.19
5.1.00.0050.0248.19
5.0.50.0020.0226.67
5.0.40.0050.0176.53
5.0.30.0030.0316.34
5.0.20.0020.0206.30
5.0.10.0030.0196.29
5.0.00.0020.0316.29
4.4.90.0020.0214.78
4.4.80.0040.0164.76
4.4.70.0020.0194.76
4.4.60.0020.0194.75
4.4.50.0020.0264.77
4.4.40.0020.0264.71
4.4.30.0040.0144.76
4.4.20.0010.0174.84
4.4.10.0030.0154.85
4.4.00.0040.0244.76
4.3.110.0020.0164.67
4.3.100.0010.0164.67
4.3.90.0060.0114.64
4.3.80.0030.0244.58
4.3.70.0030.0144.63
4.3.60.0050.0124.63
4.3.50.0020.0184.63
4.3.40.0030.0294.54
4.3.30.0020.0223.34
4.3.20.0040.0203.32
4.3.10.0050.0183.28
4.3.00.0130.0206.85

preferences:
54.75 ms | 400 KiB | 5 Q