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 ( (string) @iconv( 'UTF-8', 'UTF-16BE', "A\xc0\x80B" ) !== '' ) { echo( "JsonFallback: iconv PHP extension failed to reject C0 80\n" ); } if ( $rv = ((string) @iconv( 'UTF-8', 'UTF-16BE', "A\xf4\x90\x80\x80B" )) !== '' ) { echo( "JsonFallback: iconv PHP extension failed to reject F4 90 80 80\n" ); var_dump($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)
8.3.60.0100.01016.63
8.3.50.0070.01117.43
8.3.40.0060.00918.81
8.3.30.0000.01518.84
8.3.20.0030.00618.77
8.3.10.0040.00420.65
8.3.00.0040.00419.25
8.2.180.0110.00716.88
8.2.170.0040.01122.96
8.2.160.0100.00321.20
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0090.00020.82
8.2.110.0140.00721.11
8.2.100.0040.00817.75
8.2.90.0030.00619.42
8.2.80.0050.00219.34
8.2.70.0040.00417.50
8.2.60.0000.00817.93
8.2.50.0040.00418.07
8.2.40.0030.00518.16
8.2.30.0060.00317.96
8.2.20.0080.00017.73
8.2.10.0000.00717.71
8.2.00.0040.00417.75
8.1.280.0090.00625.92
8.1.270.0080.00024.66
8.1.260.0000.00926.35
8.1.250.0040.00428.09
8.1.240.0030.00622.46
8.1.230.0000.01120.99
8.1.220.0040.00417.74
8.1.210.0060.00318.96
8.1.200.0040.00417.23
8.1.190.0040.00417.53
8.1.180.0040.00418.10
8.1.170.0030.00618.84
8.1.160.0000.00718.82
8.1.150.0040.00418.52
8.1.140.0000.00717.47
8.1.130.0000.00717.79
8.1.120.0050.00317.52
8.1.110.0000.00717.50
8.1.100.0000.00717.51
8.1.90.0040.00417.39
8.1.80.0050.00317.48
8.1.70.0030.00317.41
8.1.60.0050.00217.48
8.1.50.0040.00417.48
8.1.40.0050.00317.58
8.1.30.0080.00017.70
8.1.20.0050.00317.64
8.1.10.0000.00817.43
8.1.00.0050.00317.43
8.0.300.0040.00419.98
8.0.290.0020.00516.88
8.0.280.0000.00718.39
8.0.270.0030.00317.28
8.0.260.0060.00016.92
8.0.250.0030.00616.93
8.0.240.0000.00817.05
8.0.230.0070.00017.08
8.0.220.0030.00317.02
8.0.210.0040.00416.89
8.0.200.0070.00017.07
8.0.190.0070.00016.96
8.0.180.0040.00416.97
8.0.170.0000.00816.97
8.0.160.0030.00317.01
8.0.150.0000.00816.91
8.0.140.0040.00416.99
8.0.130.0030.00313.34
8.0.120.0030.00617.16
8.0.110.0000.00917.17
8.0.100.0080.00017.10
8.0.90.0090.00017.19
8.0.80.0110.00617.10
8.0.70.0030.00617.02
8.0.60.0030.00617.20
8.0.50.0030.00617.20
8.0.30.0030.01717.46
8.0.20.0100.01217.24
8.0.10.0000.00917.32
8.0.00.0100.01117.10
7.4.330.0020.00212.90
7.4.320.0000.00616.67
7.4.300.0060.00016.55
7.4.290.0030.00616.45
7.4.280.0040.00416.63
7.4.270.0080.00016.52
7.4.260.0050.00013.21
7.4.250.0040.00416.77
7.4.240.0060.00316.62
7.4.230.0000.00916.74
7.4.220.0130.01316.79
7.4.210.0090.00916.72
7.4.200.0060.00316.89
7.4.190.0000.00916.56
7.4.160.0050.01416.75
7.4.150.0210.00716.68
7.4.140.0080.01116.71
7.4.130.0100.01016.62
7.4.120.0070.01416.77
7.4.110.0130.00616.55
7.4.100.0180.00716.61
7.4.90.0140.00516.64
7.4.80.0100.01319.39
7.4.70.0080.01216.89
7.4.60.0070.01216.72
7.4.50.0100.00716.52
7.4.40.0040.01416.56
7.4.30.0110.00816.56
7.4.20.0080.01116.39
7.4.10.0060.01216.34
7.4.00.0110.00815.71
7.3.330.0000.00713.08
7.3.320.0000.00613.18
7.3.310.0030.00616.36
7.3.300.0090.00016.49
7.3.290.0060.01216.50
7.3.280.0120.00716.42
7.3.270.0040.01516.68
7.3.260.0100.01016.57
7.3.250.0090.01416.53
7.3.240.0160.00416.61
7.3.230.0110.00816.46
7.3.210.0090.00916.65
7.3.200.0130.00616.48
7.3.190.0060.01416.67
7.3.180.0100.00816.46
7.3.170.0140.00716.61
7.3.160.0100.00816.32
7.3.150.0040.01516.55
7.3.140.0030.01616.40
7.3.130.0090.00916.61
7.3.120.0060.01215.53
7.3.110.0110.01115.77
7.3.100.0030.01315.54
7.3.90.0080.01115.80
7.3.80.0070.01015.70
7.3.70.0070.01415.75
7.3.60.0120.00515.62
7.3.50.0070.01115.75
7.3.40.0070.00915.71
7.3.30.0110.00515.75
7.3.20.0080.01016.53
7.3.10.0110.00916.57
7.3.00.0040.01116.68
7.2.330.0060.01616.97
7.2.320.0100.01316.62
7.2.310.0110.00916.81
7.2.300.0080.01116.76
7.2.290.0100.01016.59
7.2.280.0110.00816.58
7.2.270.0060.01216.73
7.2.260.0090.00916.88
7.2.250.0080.01316.13
7.2.240.0090.01016.14
7.2.230.0050.01515.92
7.2.220.0060.01315.96
7.2.210.0060.01115.79
7.2.200.0060.01415.82
7.2.190.0050.01315.80
7.2.180.0130.01015.92
7.2.170.0030.01515.70
7.2.160.0080.01116.62
7.2.150.0160.00416.60
7.2.140.0100.01016.70
7.2.130.0080.01016.87
7.2.120.0100.00816.80
7.2.110.0090.00716.80
7.2.100.0090.01016.93
7.2.90.0070.01016.83
7.2.80.0130.01017.00
7.2.70.0080.01116.85
7.2.60.0070.00616.81
7.2.50.0060.01116.84
7.2.40.0040.01216.92
7.2.30.0050.01216.88
7.2.20.0060.01016.87
7.2.10.0070.00816.85
7.2.00.0080.01117.55
7.1.330.0260.01115.73
7.1.320.0180.00215.76
7.1.310.0170.00515.93
7.1.300.0170.00915.82
7.1.290.0170.00415.81
7.1.280.0160.00715.68
7.1.270.0170.00515.73
7.1.260.0140.00615.78
7.1.250.0060.01215.84
7.1.240.0100.01215.64
7.1.230.0110.00815.57
7.1.220.0130.01015.76
7.1.210.0110.01215.80
7.1.200.0070.01215.77
7.1.190.0140.00615.77
7.1.180.0110.00815.86
7.1.170.0110.01115.57
7.1.160.0120.00815.61
7.1.150.0120.00915.73
7.1.140.0140.00915.62
7.1.130.0120.01115.70
7.1.120.0160.00715.75
7.1.110.0110.01215.81
7.1.100.0100.01216.54
7.1.90.0150.01115.76
7.1.80.0080.01115.78
7.1.70.0100.00816.24
7.1.60.0130.01016.95
7.1.50.0090.01516.20
7.1.40.0090.01315.83
7.1.30.0150.01015.76
7.1.20.0150.01215.84
7.1.10.0140.00915.74
7.1.00.0170.01418.09
7.0.330.0110.01315.66
7.0.320.0100.01515.34
7.0.310.0190.00715.35
7.0.300.0140.00615.50
7.0.290.0170.00515.35
7.0.280.0070.01315.55
7.0.270.0030.01715.30
7.0.260.0120.00715.29
7.0.250.0100.01215.38
7.0.240.0170.00615.52
7.0.230.0040.01915.36
7.0.220.0140.01015.59
7.0.210.0170.00515.47
7.0.200.0130.00416.00
7.0.190.0160.00415.38
7.0.180.0150.00715.49
7.0.170.0140.00915.52
7.0.160.0270.01015.46
7.0.150.0150.01315.47
7.0.140.0090.03317.72
7.0.130.0190.00815.48
7.0.120.0180.01115.27
7.0.110.0180.01115.28
7.0.100.0170.00415.37
7.0.90.0120.01415.40
7.0.80.0180.00815.19
7.0.70.0110.01515.41
7.0.60.0130.03116.79
7.0.50.0120.02016.21
7.0.40.0190.03316.43
7.0.30.0240.01916.46
7.0.20.0180.03016.29
7.0.10.0080.02916.31
7.0.00.0100.03516.29
5.6.400.0130.02316.06
5.6.390.0180.01315.90
5.6.380.0100.01214.95
5.6.370.0130.01215.04
5.6.360.0130.01015.11
5.6.350.0100.01315.39
5.6.340.0150.00815.06
5.6.330.0150.00715.22
5.6.320.0150.00915.27
5.6.310.0140.00915.32
5.6.300.0170.01015.19
5.6.290.0160.00715.28
5.6.280.0130.01615.03
5.6.270.0110.01515.45
5.6.260.0160.01315.26
5.6.250.0100.01615.34
5.6.240.0160.01115.21
5.6.230.0050.01715.18
5.6.220.0080.01415.16
5.6.210.0180.03017.00
5.6.200.0130.03416.14
5.6.190.0110.02217.01
5.6.180.0180.02417.02
5.6.170.0210.03417.06
5.6.160.0050.03716.98
5.6.150.0110.03016.15
5.6.140.0110.02416.15
5.6.130.0130.02916.25
5.6.120.0130.02817.26
5.6.110.0070.03117.32
5.6.100.0160.02217.10
5.6.90.0130.03717.28
5.6.80.0160.03316.96
5.6.70.1580.01816.91
5.6.60.0110.01315.17
5.6.50.0160.00915.24
5.6.40.0140.01015.00
5.6.30.0150.00715.15
5.6.20.0140.01315.03
5.6.10.0080.01615.18
5.6.00.0120.00915.17
5.5.380.0090.01713.52
5.5.370.0110.01213.55
5.5.360.0110.01113.55
5.5.350.0150.01915.76
5.5.340.0120.01814.94
5.5.330.0120.01915.91
5.5.320.0170.03315.74
5.5.310.0180.02115.62
5.5.300.0110.03515.04
5.5.290.0090.02614.94
5.5.280.0120.02915.93
5.5.270.0110.03615.96
5.5.260.0140.03115.93
5.5.250.0120.02915.94
5.5.240.0140.02615.81
5.5.230.0140.00813.38
5.5.220.0120.01213.40
5.5.210.0120.01213.37
5.5.200.0150.00613.34
5.5.190.0110.01413.28
5.5.180.0090.01313.37
5.5.170.0130.00713.15
5.5.160.0150.00713.47
5.5.150.0130.01113.31
5.5.140.0160.00913.32
5.5.130.0100.01213.48
5.5.120.0120.00813.35
5.5.110.0070.01413.34
5.5.100.0170.00713.45
5.5.90.0130.00613.26
5.5.80.0090.01513.34
5.5.70.0130.00913.36
5.5.60.0110.01113.50
5.5.50.0110.00913.54
5.5.40.0100.01113.47
5.5.30.0160.00413.31
5.5.20.0110.01013.33
5.5.10.0150.00613.22
5.5.00.0110.01013.38
5.4.450.0120.03114.35
5.4.440.0090.02214.27
5.4.430.0100.03114.33
5.4.420.0110.02414.42
5.4.410.0100.03014.19
5.4.400.0090.03014.05
5.4.390.0110.02914.15
5.4.380.0100.02914.00
5.4.370.0110.02814.09
5.4.360.0090.02914.06
5.4.350.0090.03014.07
5.4.340.0080.03214.17
5.4.330.0120.00711.70
5.4.320.0050.03214.05
5.4.310.0110.03014.06
5.4.300.0060.02614.20
5.4.290.0090.03014.09
5.4.280.0110.01614.14
5.4.270.0050.02614.19
5.4.260.0110.02614.10
5.4.250.0100.01414.00
5.4.240.0080.02614.14
5.4.230.0100.02514.12
5.4.220.0060.02514.04
5.4.210.0040.03114.21
5.4.200.0070.03014.02
5.4.190.0130.02814.10
5.4.180.0100.02514.25
5.4.170.0100.03214.18
5.4.160.0120.02714.14
5.4.150.0160.02514.22
5.4.140.0090.02313.25
5.4.130.0080.02913.21
5.4.120.0070.02013.22
5.4.110.0070.02113.26
5.4.100.0050.02113.32
5.4.90.0110.02913.21
5.4.80.0070.02213.33
5.4.70.0080.01613.22
5.4.60.0100.01513.26
5.4.50.0090.02013.31
5.4.40.0100.01613.31
5.4.30.0070.02013.18
5.4.20.0060.01813.18
5.4.10.0050.01913.31
5.4.00.0100.01412.92
5.3.290.0090.02312.84
5.3.280.0100.03212.70
5.3.270.0100.03012.73
5.3.260.0100.02712.84
5.3.250.0050.03712.84
5.3.240.0070.02912.68
5.3.230.0010.02612.77
5.3.220.0160.01312.74
5.3.210.0120.03212.73
5.3.200.0090.01812.60
5.3.190.0090.03212.84
5.3.180.0090.02712.87
5.3.170.0100.02212.94
5.3.160.0120.01512.85
5.3.150.0070.02012.88
5.3.140.0090.01612.82
5.3.130.0100.01712.82
5.3.120.0080.01912.79
5.3.110.0050.02012.83
5.3.100.0050.02112.65
5.3.90.0040.02312.58
5.3.80.0060.01912.49
5.3.70.0060.01912.56
5.3.60.0090.01712.71
5.3.50.0080.01812.53
5.3.40.0100.01712.55
5.3.30.0100.02812.63
5.3.20.0070.01912.52
5.3.10.0090.01312.31
5.3.00.0050.02312.30
5.2.170.0050.01811.33
5.2.160.0060.01711.28
5.2.150.0100.02111.22
5.2.140.0040.02911.20
5.2.130.0070.01411.22
5.2.120.0080.01511.20
5.2.110.0090.01311.22
5.2.100.0030.01811.25
5.2.90.0080.01411.22
5.2.80.0060.01611.21
5.2.70.0070.01711.24
5.2.60.0050.01811.13
5.2.50.0090.01511.18
5.2.40.0040.01911.15
5.2.30.0030.01811.19
5.2.20.0050.01711.13
5.2.10.0070.01511.08
5.2.00.0070.01311.04
5.1.60.0030.01710.79
5.1.50.0020.01710.79
5.1.40.0070.01210.75
5.1.30.0040.01510.89
5.1.20.0010.01810.87
5.1.10.0040.01610.85
5.1.00.0070.01110.85
5.0.50.0040.01110.31
5.0.40.0050.01110.26
5.0.30.0040.01810.17
5.0.20.0040.00910.16
5.0.10.0040.01110.16
5.0.00.0040.01310.15
4.4.90.0040.00810.08
4.4.80.0030.00710.08
4.4.70.0010.00910.08
4.4.60.0020.00910.08
4.4.50.0030.00810.08
4.4.40.0050.00810.08
4.4.30.0030.00810.08
4.4.20.0050.00510.08
4.4.10.0040.00610.08
4.4.00.0060.00710.08
4.3.110.0020.00910.08
4.3.100.0010.01010.08
4.3.90.0020.00810.08
4.3.80.0030.00910.08
4.3.70.0030.00810.08
4.3.60.0030.00810.08
4.3.50.0010.00710.08
4.3.40.0030.01010.08
4.3.30.0020.00610.08
4.3.20.0050.00610.08
4.3.10.0040.00510.08
4.3.00.0030.00610.08

preferences:
38.1 ms | 401 KiB | 5 Q