3v4l.org

run code in 300+ PHP versions simultaneously
<?php // iconv checks if ( !function_exists( 'iconv' ) ) { echo( "JsonFallback: iconv PHP extension is missing\n" ); } if ( iconv( 'UTF-8', 'UTF-16BE', "\x00" ) !== "\x00\x00" ) { echo( "JsonFallback: iconv PHP extension failed to convert U+0000\n" ); } if ( iconv( 'UTF-8', 'UTF-16BE', "\xc4\x80" ) !== "\x01\x00" ) { echo( "JsonFallback: iconv PHP extension failed to convert U+0100\n" ); } if ( iconv( 'UTF-8', 'UTF-16BE', "\xef\xbf\xbf" ) !== "\xff\xff" ) { echo( "JsonFallback: iconv PHP extension failed to convert U+FFFF\n" ); } if ( iconv( 'UTF-8', 'UTF-16BE', "\xf0\x90\x80\x80" ) !== "\xd8\x00\xdc\x00" ) { echo( "JsonFallback: iconv PHP extension failed to convert U+10000\n" ); } if ( ($rv = @iconv( 'UTF-8', 'UTF-16BE', "\xc0\x80" )) !== false ) { echo( "JsonFallback: iconv PHP extension failed to reject C0 80\n" ); var_dump( $rv ); } if ( ($rv = @iconv( 'UTF-8', 'UTF-16BE', "\xf4\x90\x80\x80" )) !== false ) { echo( "JsonFallback: iconv PHP extension failed to reject F4 90 80 80\n" ); var_dump( $rv ); }

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)
8.3.60.0070.00716.75
8.3.50.0100.00921.94
8.3.40.0070.00718.98
8.3.30.0070.00719.21
8.3.20.0080.00020.20
8.3.10.0040.00423.48
8.3.00.0030.00520.75
8.2.180.0090.00616.50
8.2.170.0170.00022.96
8.2.160.0070.00722.00
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00422.11
8.2.110.0050.00522.29
8.2.100.0110.00017.91
8.2.90.0050.00319.08
8.2.80.0000.00817.97
8.2.70.0000.00817.50
8.2.60.0040.00417.80
8.2.50.0050.00318.07
8.2.40.0040.00418.34
8.2.30.0050.00218.08
8.2.20.0000.00817.54
8.2.10.0070.00017.78
8.2.00.0030.00617.59
8.1.280.0070.00725.92
8.1.270.0050.00323.84
8.1.260.0040.00426.35
8.1.250.0090.00028.09
8.1.240.0030.00723.79
8.1.230.0060.00618.99
8.1.220.0070.00017.74
8.1.210.0050.00318.77
8.1.200.0060.00317.35
8.1.190.0030.00617.55
8.1.180.0090.00018.10
8.1.170.0000.00818.64
8.1.160.0000.00721.98
8.1.150.0050.00218.74
8.1.140.0070.00017.39
8.1.130.0000.00717.81
8.1.120.0000.00717.50
8.1.110.0000.00817.45
8.1.100.0040.00417.47
8.1.90.0040.00417.37
8.1.80.0000.00717.38
8.1.70.0030.00317.45
8.1.60.0090.00017.61
8.1.50.0040.00417.53
8.1.40.0000.00817.53
8.1.30.0040.00417.64
8.1.20.0030.00617.69
8.1.10.0030.00617.45
8.1.00.0030.00617.40
8.0.300.0040.00418.77
8.0.290.0000.00717.16
8.0.280.0030.00518.35
8.0.270.0000.00817.32
8.0.260.0030.00316.82
8.0.250.0070.00017.09
8.0.240.0000.00817.01
8.0.230.0030.00317.07
8.0.220.0070.00016.95
8.0.210.0030.00316.89
8.0.200.0030.00617.08
8.0.190.0030.00716.95
8.0.180.0000.00716.93
8.0.170.0050.00216.89
8.0.160.0070.00016.92
8.0.150.0070.00016.86
8.0.140.0000.00717.00
8.0.130.0030.00313.49
8.0.120.0000.01017.02
8.0.110.0050.00517.17
8.0.100.0000.00917.00
8.0.90.0030.00617.18
8.0.80.0150.00317.18
8.0.70.0090.00017.05
8.0.60.0060.00317.09
8.0.50.0030.00617.19
8.0.30.0170.00817.32
8.0.20.0120.01017.40
8.0.10.0030.00617.33
8.0.00.0150.00516.82
7.4.330.0000.00515.09
7.4.320.0000.00616.52
7.4.300.0060.00316.52
7.4.290.0040.00716.63
7.4.280.0000.00716.41
7.4.270.0000.00716.48
7.4.260.0050.00216.46
7.4.250.0030.00616.75
7.4.240.0030.00516.69
7.4.230.0030.00616.61
7.4.220.0130.00716.56
7.4.210.0070.01016.76
7.4.200.0040.00416.68
7.4.190.0060.00316.66
7.4.160.0150.01216.92
7.4.150.0130.00617.40
7.4.140.0060.01417.86
7.4.130.0110.01116.80
7.4.120.0160.00616.64
7.4.110.0080.01116.55
7.4.100.0090.01416.67
7.4.90.0090.01316.64
7.4.80.0060.01619.39
7.4.70.0170.00916.69
7.4.60.0140.01216.57
7.4.50.0100.01116.45
7.4.40.0140.01219.63
7.4.30.0260.00816.49
7.4.20.0290.00716.53
7.4.10.0230.01816.64
7.4.00.0090.01115.96
7.3.330.0060.00013.23
7.3.320.0050.00013.23
7.3.310.0040.00416.28
7.3.300.0000.00816.36
7.3.290.0090.00916.41
7.3.280.0080.01016.50
7.3.270.0170.00317.40
7.3.260.0120.02716.50
7.3.250.0130.01016.50
7.3.240.0110.01516.56
7.3.230.0040.01516.40
7.3.210.0160.01016.55
7.3.200.0120.00916.49
7.3.190.0240.00916.56
7.3.180.0150.01016.47
7.3.170.0190.00916.33
7.3.160.0270.00616.52
7.3.150.0230.01716.18
7.3.140.0140.01416.45
7.3.130.0050.02116.66
7.3.120.0070.01315.65
7.3.110.0160.01016.40
7.3.100.0130.01016.26
7.3.90.0190.00616.21
7.3.80.0150.00916.47
7.3.70.0120.01516.31
7.3.60.0260.00316.33
7.3.50.0080.01316.19
7.3.40.0090.01216.32
7.3.30.0080.01316.37
7.3.20.0080.01616.19
7.3.10.0130.00616.66
7.3.00.0070.01316.58
7.2.330.0100.01316.69
7.2.320.0080.01216.66
7.2.310.0150.00916.70
7.2.300.0090.01916.76
7.2.290.0110.01716.67
7.2.280.0180.01616.63
7.2.270.0240.00916.81
7.2.260.0150.01016.55
7.2.250.0220.00616.51
7.2.240.0030.01816.56
7.2.230.0080.01216.36
7.2.220.0080.02116.29
7.2.210.0100.01316.71
7.2.200.0120.01816.62
7.2.190.0160.01216.52
7.2.180.0200.00716.47
7.2.170.0080.01616.54
7.2.160.0110.01116.59
7.2.150.0110.01516.55
7.2.140.0170.00516.66
7.2.130.0070.01116.79
7.2.120.0140.00816.70
7.2.110.0080.01116.63
7.2.100.0110.01316.63
7.2.90.0110.01216.67
7.2.80.0070.01216.83
7.2.70.0160.01016.74
7.2.60.0070.01316.64
7.2.50.0090.01316.66
7.2.40.0140.00616.72
7.2.30.0090.00916.81
7.2.20.0330.00516.62
7.2.10.0060.01116.83
7.2.00.0080.01016.58
7.1.330.0210.01115.69
7.1.320.0180.01415.75
7.1.310.0290.00715.79
7.1.300.0130.01915.75
7.1.290.0260.00815.70
7.1.280.0250.00415.84
7.1.270.0180.01215.79
7.1.260.0150.01515.55
7.1.250.0140.01015.71
7.1.240.0200.01215.77
7.1.230.0450.02115.54
7.1.220.0150.01515.58
7.1.210.0180.01415.74
7.1.200.0200.00315.67
7.1.190.0160.01315.65
7.1.180.0190.01615.63
7.1.170.0190.01515.50
7.1.160.0200.01015.52
7.1.150.0200.01015.61
7.1.140.0160.01215.69
7.1.130.0240.00715.51
7.1.120.0120.02015.55
7.1.110.0170.01415.75
7.1.100.0140.00716.93
7.1.90.0240.00415.71
7.1.80.0120.01815.72
7.1.70.0150.00616.34
7.1.60.0160.01017.44
7.1.50.0170.00816.22
7.1.40.0600.01015.79
7.1.30.0210.01215.63
7.1.20.0240.00715.63
7.1.10.0280.00515.79
7.1.00.0130.04419.00
7.0.330.0150.01515.27
7.0.320.0270.00615.31
7.0.310.0260.01115.28
7.0.300.0140.01415.18
7.0.290.0150.01315.20
7.0.280.0180.01015.54
7.0.270.0140.01415.49
7.0.260.0300.01115.33
7.0.250.0190.01615.43
7.0.240.0200.01015.42
7.0.230.0180.00915.40
7.0.220.0210.00915.60
7.0.210.0230.00715.32
7.0.200.0150.00416.02
7.0.190.0140.01815.64
7.0.180.0260.00715.29
7.0.170.0290.00015.62
7.0.160.0120.01615.43
7.0.150.0180.01115.40
7.0.140.0150.03918.74
7.0.130.0230.01115.41
7.0.120.0220.00815.52
7.0.110.0220.01515.45
7.0.100.0260.03917.79
7.0.90.0250.02317.73
7.0.80.0140.04917.71
7.0.70.0170.04017.56
7.0.60.0100.04717.57
7.0.50.0260.04217.94
7.0.40.0150.02517.89
7.0.30.0150.04017.85
7.0.20.0270.03017.77
7.0.10.0520.04217.60
7.0.00.0140.04317.79
5.6.400.0190.01216.25
5.6.390.0210.01115.84
5.6.380.0190.01515.66
5.6.370.0320.00715.93
5.6.360.0270.01016.16
5.6.350.0180.01215.70
5.6.340.0230.00716.27
5.6.330.0260.00515.90
5.6.320.0190.01315.86
5.6.310.0250.01416.15
5.6.300.0180.01316.17
5.6.290.0160.01615.73
5.6.280.0150.04218.53
5.6.270.0150.01515.70
5.6.260.0200.01315.80
5.6.250.0150.02618.40
5.6.240.0110.04618.40
5.6.230.0130.05118.28
5.6.220.0130.04918.24
5.6.210.0170.03018.26
5.6.200.0150.05318.64
5.6.190.0110.04818.55
5.6.180.0150.04318.68
5.6.170.0190.04118.67
5.6.160.0150.02518.53
5.6.150.0180.04718.48
5.6.140.0130.04818.64
5.6.130.0130.04818.55
5.6.120.0170.04318.63
5.6.110.0120.03718.61
5.6.100.0190.04418.71
5.6.90.0120.05118.54
5.6.80.0180.04418.28
5.6.70.0120.04618.12
5.6.60.0190.04118.21
5.6.50.0160.02118.27
5.6.40.0170.04718.27
5.6.30.0160.03618.18
5.6.20.0090.02918.29
5.6.10.0140.02618.29
5.6.00.0140.02618.20
5.5.380.0170.04318.20
5.5.370.0120.05118.32
5.5.360.0120.04718.09
5.5.350.0180.04518.26
5.5.340.0100.03918.47
5.5.330.0160.04218.40
5.5.320.0130.04818.45
5.5.310.0080.05218.60
5.5.300.0160.03918.42
5.5.290.0150.03218.42
5.5.280.0070.05118.46
5.5.270.0130.04818.46
5.5.260.0140.03618.46
5.5.250.0160.04618.38
5.5.240.0140.04818.18
5.5.230.0160.04318.18
5.5.220.0160.03618.19
5.5.210.0200.03818.12
5.5.200.0140.04618.04
5.5.190.0150.03618.11
5.5.180.0080.04118.18
5.5.170.0150.01515.91
5.5.160.0120.03118.15
5.5.150.0110.03318.09
5.5.140.0120.02618.06
5.5.130.0140.02818.11
5.5.120.0110.02918.10
5.5.110.0120.02418.00
5.5.100.0120.03018.08
5.5.90.0140.02517.84
5.5.80.0130.03018.11
5.5.70.0130.02418.11
5.5.60.0140.02518.02
5.5.50.0080.03918.02
5.5.40.0150.02217.93
5.5.30.0200.01917.96
5.5.20.0100.02917.89
5.5.10.0100.02917.96
5.5.00.0100.02617.93
5.4.450.0120.04016.12
5.4.440.0120.04416.19
5.4.430.0140.04016.04
5.4.420.0070.04815.92
5.4.410.0100.04816.02
5.4.400.0060.04615.76
5.4.390.0150.03515.76
5.4.380.0150.03715.84
5.4.370.0090.03015.99
5.4.360.0020.04415.77
5.4.350.0090.03815.70
5.4.340.0110.02615.91
5.4.330.0130.01012.22
5.4.320.0120.02115.75
5.4.310.0100.02515.93
5.4.300.0090.02315.85
5.4.290.0070.02815.86
5.4.280.0070.02715.89
5.4.270.0130.02315.86
5.4.260.0080.02715.85
5.4.250.0100.02315.76
5.4.240.0130.02015.89
5.4.230.0180.01815.97
5.4.220.0110.03115.82
5.4.210.0080.02615.74
5.4.200.0140.01815.81
5.4.190.0130.02015.70
5.4.180.0110.02315.78
5.4.170.0100.02415.77
5.4.160.0110.02315.82
5.4.150.0100.03315.73
5.4.140.0100.02214.41
5.4.130.0090.02114.47
5.4.120.0120.02214.44
5.4.110.0030.02814.52
5.4.100.0090.02314.52
5.4.90.0130.01914.63
5.4.80.0080.02114.45
5.4.70.0100.02314.51
5.4.60.0120.02214.49
5.4.50.0050.02714.52
5.4.40.0140.01814.51
5.4.30.0080.02514.49
5.4.20.0130.01914.53
5.4.10.0100.02714.58
5.4.00.0130.02014.23
5.3.290.0120.02714.01
5.3.280.0110.01913.95
5.3.270.0110.02913.89
5.3.260.0170.02014.09
5.3.250.0090.02113.93
5.3.240.0130.02313.93
5.3.230.0110.02714.06
5.3.220.0090.02713.83
5.3.210.0160.02113.91
5.3.200.0070.02813.88
5.3.190.0150.02213.98
5.3.180.0060.02913.92
5.3.170.0160.03413.98
5.3.160.0120.02314.01
5.3.150.0120.02713.97
5.3.140.0100.02614.03
5.3.130.0110.02314.00
5.3.120.0070.02613.93
5.3.110.0070.03213.91
5.3.100.0070.02613.77
5.3.90.0130.02213.70
5.3.80.0080.03113.64
5.3.70.0130.02713.58
5.3.60.0080.02913.65
5.3.50.0130.02513.63
5.3.40.0130.03313.56
5.3.30.0100.04213.62
5.3.20.0110.04613.47
5.3.10.0140.04113.37
5.3.00.0090.04813.37
5.2.170.0100.02912.23
5.2.160.0110.02412.19
5.2.150.0090.02612.20
5.2.140.0110.03912.15
5.2.130.0110.03512.22
5.2.120.0060.03812.27
5.2.110.0120.03512.20
5.2.100.0050.04212.15
5.2.90.0140.03012.27
5.2.80.0160.03212.10
5.2.70.0120.03712.12
5.2.60.0100.03512.12
5.2.50.0090.04012.14
5.2.40.0060.04412.18
5.2.30.0180.02712.15
5.2.20.0080.04212.04
5.2.10.0110.03912.16
5.2.00.0120.04112.06
5.1.60.0080.03112.04
5.1.50.0100.03412.04
5.1.40.0100.03012.04
5.1.30.0080.03312.04
5.1.20.0050.03712.04
5.1.10.0080.03312.04
5.1.00.0120.02612.04
5.0.50.0100.02612.04
5.0.40.0120.02212.04
5.0.30.0080.02912.04
5.0.20.0100.01512.04
5.0.10.0100.02512.04
5.0.00.0040.04012.04
4.4.90.0120.01312.04
4.4.80.0060.01912.04
4.4.70.0080.01712.04
4.4.60.0030.01612.04
4.4.50.0040.01912.04
4.4.40.0070.03212.04
4.4.30.0040.02212.04
4.4.20.0030.01812.04
4.4.10.0050.02012.04
4.4.00.0060.02712.04
4.3.110.0030.02212.04
4.3.100.0080.01012.04
4.3.90.0030.01912.04
4.3.80.0030.02612.04
4.3.70.0070.01112.04
4.3.60.0090.01512.04
4.3.50.0070.01712.04
4.3.40.0070.02312.04
4.3.30.0030.02112.04
4.3.20.0030.01312.04
4.3.10.0030.01812.04
4.3.00.0040.01712.04

preferences:
50.17 ms | 400 KiB | 5 Q