3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '回';echo $str{0};echo urlencode($str); echo $bin = pack("C3", ord($str{0}), ord($str{1}), ord($str{2}));//回 $hex = strtoupper(bin2hex($bin)); echo "UTF-8编码: " . $hex . "\n"; $byte1 = ord($str{0}); $byte2 = ord($str{1}); $byte3 = ord($str{2}); $c1 = (($byte1 & 0x0F) << 4) | (($byte2 & 0x3F) >> 2); $c2 = (($byte2 & 0x03) << 6) | ($byte3 & 0x3F); $dec = (($c1 & 0x00FF) << 8) | $c2; echo "Unicode编码: " . $dec . "\n"; $str = "\u00b6\u00b9\u00c0\u00e0"; $gbk_str = pack("H*", str_replace("\u00", "", $str)); $utf8_str = iconv("GBK", "UTF-8//IGNORE", $gbk_str); $utf8_len = strlen($utf8_str); $res = ""; for ($i = 0; $i < $utf8_len; $i++) { $byte1 = ord($utf8_str{$i}); // UTF-8是变长字节,占1~6字节。 // 这里是固定情况,就不作这么多判断了 // 直接当三字节 if ((($byte1 >> 4) & 0xFF) == 0xE) { // U+00000800 – U+0000FFFF 1110xxxx 10xxxxxx 10xxxxxx $byte2 = ord(substr($utf8_str, ++$i, 1)); $byte3 = ord(substr($utf8_str, ++$i, 1)); $b1 = ($byte1 << 4) | (($byte2 >> 2) & 0x0F); $b2 = (($byte2 & 0x03) << 6) | ($byte3 & 0x3F); $unicode = (($b1 & 0x00FF) << 8) | $b2; $res .= sprintf("\u%x", $unicode); } else { // 略过... } } echo $res . "\n"; // output: \u8c46\u7c7b echo pack("C", 97) . "\n";

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)
8.3.40.0070.00718.54
8.3.30.0070.00718.96
8.3.20.0000.00820.29
8.3.10.0050.00321.97
8.3.00.0040.00422.42
8.2.170.0120.00322.96
8.2.160.0040.01119.05
8.2.150.0050.00324.18
8.2.140.0150.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00419.41
8.2.110.0060.00322.03
8.2.100.0110.00019.27
8.2.90.0040.00419.11
8.2.80.0030.00617.97
8.2.70.0060.00317.50
8.2.60.0000.00817.80
8.2.50.0000.00818.07
8.2.40.0000.00818.09
8.2.30.0000.00717.88
8.2.20.0080.00017.41
8.2.10.0070.00017.57
8.2.00.0100.00017.48
8.1.270.0000.00818.51
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0070.00324.02
8.1.230.0090.00318.97
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.00
8.1.190.0080.00017.40
8.1.180.0000.00818.62
8.1.170.0060.00318.59
8.1.160.0070.00022.09
8.1.150.0070.00018.43
8.1.140.0070.00017.44
8.1.130.0040.00417.76
8.1.120.0000.00717.35
8.1.110.0000.00917.32
8.1.100.0040.00417.30
8.1.90.0000.00717.30
8.1.80.0040.00417.38
8.1.70.0000.00717.29
8.1.60.0050.00317.46
8.1.50.0000.00817.45
8.1.40.0040.00417.30
8.1.30.0000.00817.48
8.1.20.0000.00717.60
8.1.10.0030.00617.25
8.1.00.0070.00017.21
8.0.300.0000.00718.77
8.0.290.0050.00216.93
8.0.280.0040.00418.33
8.0.270.0000.00717.06
8.0.260.0000.00616.67
8.0.250.0000.00716.91
8.0.240.0030.00716.92
8.0.230.0070.00016.95
8.0.220.0030.00316.70
8.0.210.0000.00816.86
8.0.200.0000.00916.79
8.0.190.0080.00016.81
8.0.180.0000.00716.95
8.0.170.0060.00316.88
8.0.160.0050.00316.88
8.0.150.0070.00016.77
8.0.140.0070.00016.70
8.0.130.0000.00513.26
8.0.120.0000.00816.77
8.0.110.0040.00416.80
8.0.100.0000.00716.95
8.0.90.0040.00416.78
8.0.80.0110.00316.77
8.0.70.0040.00416.66
8.0.60.0040.00416.72
8.0.50.0000.00816.78
8.0.30.0040.01316.99
8.0.20.0080.01317.40
8.0.10.0000.00716.99
8.0.00.0150.00516.61
7.4.330.0000.00515.00
7.4.320.0060.00016.43
7.4.300.0000.00716.48
7.4.290.0000.00816.54
7.4.280.0080.00016.59
7.4.270.0070.00016.59
7.4.260.0040.00416.58
7.4.250.0000.00916.90
7.4.240.0050.00416.82
7.4.230.0030.00616.71
7.4.220.0090.01816.73
7.4.210.0080.00916.97
7.4.200.0000.00817.00
7.4.190.0060.00316.95
7.4.160.0130.00416.85
7.4.150.0060.01317.40
7.4.140.0170.00917.86
7.4.130.0120.01316.81
7.4.120.0090.01116.94
7.4.110.0040.01516.63
7.4.100.0100.01017.07
7.4.90.0110.00816.89
7.4.80.0080.01619.39
7.4.70.0070.01516.66
7.4.60.0100.01116.73
7.4.50.0120.00516.65
7.4.40.0120.00919.81
7.4.30.0160.01016.52
7.4.20.0070.01216.80
7.4.10.0090.01316.88
7.4.00.0080.01415.76
7.3.330.0070.00013.24
7.3.320.0000.00513.13
7.3.310.0000.00816.50
7.3.300.0000.00816.61
7.3.290.0030.01316.65
7.3.280.0090.01116.69
7.3.270.0130.00717.40
7.3.260.0160.00316.82
7.3.250.0070.01616.88
7.3.240.0100.01716.85
7.3.230.0130.01716.55
7.3.210.0070.01116.82
7.3.200.0140.00716.67
7.3.190.0060.01416.71
7.3.180.0080.01316.52
7.3.170.0110.01116.85
7.3.160.0050.01516.70
7.3.150.0080.01216.57
7.3.140.0070.01916.75
7.3.130.0200.00516.65
7.3.120.0080.01315.69
7.3.110.0060.01416.00
7.3.100.0080.01315.80
7.3.90.0100.00815.82
7.3.80.0140.00615.67
7.3.70.0060.00915.96
7.3.60.0080.01115.97
7.3.50.0070.01015.92
7.3.40.0110.00815.89
7.3.30.0050.01315.84
7.3.20.0100.01017.57
7.3.10.0090.01017.73
7.3.00.0050.01217.70
7.2.330.0080.01217.08
7.2.320.0170.00417.04
7.2.310.0080.01416.75
7.2.300.0070.01217.06
7.2.290.0060.01216.95
7.2.280.0030.01816.80
7.2.270.0130.00816.75
7.2.260.0130.00717.09
7.2.250.0080.01215.92
7.2.240.0050.01416.03
7.2.230.0150.00316.13
7.2.220.0030.01515.79
7.2.210.0050.01316.15
7.2.200.0030.01516.05
7.2.190.0030.01216.06
7.2.180.0060.01316.03
7.2.170.0110.00516.07
7.2.160.0100.00815.96
7.2.150.0110.00818.06
7.2.140.0170.00618.08
7.2.130.0320.01117.94
7.2.120.0100.00817.98
7.2.110.0120.00917.87
7.2.100.0150.00917.88
7.2.90.0120.00917.98
7.2.80.0190.00818.09
7.2.70.0080.01218.05
7.2.60.0100.00817.63
7.2.50.0110.00818.03
7.2.40.0120.01117.96
7.2.30.0230.01117.15
7.2.20.0110.01017.93
7.2.10.0090.01117.99
7.2.00.0110.00718.42
7.1.330.0580.01416.93
7.1.320.0020.01416.80
7.1.310.0140.00716.76
7.1.300.0250.01116.82
7.1.290.0160.01016.84
7.1.280.0120.00816.94
7.1.270.0140.01116.75
7.1.260.0110.00616.71
7.1.250.0060.01316.69
7.1.240.0210.00816.79
7.1.230.0170.00816.70
7.1.220.0170.00816.83
7.1.210.0170.01116.88
7.1.200.0140.00816.62
7.1.190.0090.01616.90
7.1.180.0110.01416.85
7.1.170.0170.00816.81
7.1.160.0170.00316.93
7.1.150.0120.01316.84
7.1.140.0130.01017.00
7.1.130.0050.01316.64
7.1.120.0090.00616.75
7.1.110.0080.00816.96
7.1.100.0120.01017.39
7.1.90.0120.00715.99
7.1.80.0060.01115.94
7.1.70.0080.01116.33
7.1.60.0090.01317.24
7.1.50.0140.00916.25
7.1.40.0140.00615.91
7.1.30.0140.01015.99
7.1.20.0150.00815.93
7.1.10.0130.01115.84
7.1.00.0170.02718.09
7.0.330.0050.01216.59
7.0.320.0130.00916.59
7.0.310.0110.01116.55
7.0.300.0130.00816.50
7.0.290.0050.01116.41
7.0.280.0120.01116.43
7.0.270.0080.01215.56
7.0.260.0080.00816.47
7.0.250.0070.01016.49
7.0.240.0250.00715.71
7.0.230.0080.00615.64
7.0.220.0150.00815.63
7.0.210.0110.01115.76
7.0.200.0100.00816.13
7.0.190.0110.01115.61
7.0.180.0110.01015.63
7.0.170.0250.00915.69
7.0.160.0200.01015.66
7.0.150.0120.01315.53
7.0.140.0100.03517.77
7.0.130.0150.01115.72
7.0.120.0160.01315.79
7.0.110.0070.01415.67
7.0.100.1190.01015.66
7.0.90.0100.01015.53
7.0.80.0110.01215.54
7.0.70.0190.00715.68
7.0.60.0110.03217.12
7.0.50.0090.03816.53
7.0.40.0120.03616.54
7.0.30.0190.03116.58
7.0.20.0210.02917.19
7.0.10.0190.03916.53
7.0.00.0070.03916.52
5.6.400.0030.01515.39
5.6.390.0140.01115.35
5.6.380.0150.01015.39
5.6.370.0140.01115.25
5.6.360.0190.00615.44
5.6.350.0110.01315.25
5.6.340.0120.01515.28
5.6.330.0070.01415.60
5.6.320.0090.01315.29
5.6.310.0140.00815.33
5.6.300.0140.01115.21
5.6.290.0120.01415.69
5.6.280.0110.03217.40
5.6.270.0150.01415.50
5.6.260.0060.01315.29
5.6.250.0110.01215.48
5.6.240.0190.00515.40
5.6.230.0070.01815.54
5.6.220.0150.00815.48
5.6.210.0140.03117.20
5.6.200.0080.02416.28
5.6.190.0060.02617.32
5.6.180.1280.02117.19
5.6.170.0180.02617.11
5.6.160.0140.03217.23
5.6.150.0100.02116.53
5.6.140.0070.02816.46
5.6.130.0130.03516.53
5.6.120.0100.02717.39
5.6.110.0130.03317.43
5.6.100.0100.03517.38
5.6.90.0120.03717.32
5.6.80.0110.03317.03
5.6.70.0160.03317.08
5.6.60.0140.00615.26
5.6.50.0120.01015.37
5.6.40.0120.01215.26
5.6.30.0130.01315.19
5.6.20.0120.01215.35
5.6.10.0160.01015.33
5.6.00.0170.01315.34
5.5.380.0160.00815.30
5.5.370.0130.01415.32
5.5.360.0090.01415.51
5.5.350.0100.03617.02
5.5.340.0060.02616.52
5.5.330.0120.03517.14
5.5.320.0140.03617.17
5.5.310.0200.03417.05
5.5.300.0120.02316.32
5.5.290.0140.01716.43
5.5.280.0130.02417.43
5.5.270.0110.03517.38
5.5.260.0100.02317.08
5.5.250.0070.02617.17
5.5.240.0090.03516.95
5.5.230.0080.01315.42
5.5.220.0100.01415.32
5.5.210.0180.00415.27
5.5.200.0130.01015.29
5.5.190.0110.01615.31
5.5.180.0150.01015.30
5.5.170.0130.01515.25
5.5.160.0130.01515.30
5.5.150.0090.01415.40
5.5.140.0080.01015.07
5.5.130.0050.01415.36
5.5.120.0100.01315.23
5.5.110.0150.00915.24
5.5.100.0140.01315.36
5.5.90.0080.01715.06
5.5.80.0160.00615.40
5.5.70.0110.01215.44
5.5.60.0100.01515.39
5.5.50.0140.00915.19
5.5.40.0160.00715.05
5.5.30.0130.00815.19
5.5.20.0140.00715.35
5.5.10.0170.00815.44
5.5.00.0180.00815.16
5.4.450.0260.02614.45
5.4.440.0250.02714.56
5.4.430.0110.02214.50
5.4.420.0220.02014.45
5.4.410.0260.02614.38
5.4.400.0270.02314.23
5.4.390.0260.02614.29
5.4.380.0180.01814.36
5.4.370.0240.02314.31
5.4.360.0210.02014.31
5.4.350.0180.01914.18
5.4.340.0220.01814.38
5.4.330.0080.01111.77
5.4.320.0260.02714.31
5.4.310.0210.02514.25
5.4.300.0180.02114.45
5.4.290.0180.02214.27
5.4.280.0270.01614.34
5.4.270.0270.02314.32
5.4.260.0280.02514.24
5.4.250.0200.01714.27
5.4.240.0230.01514.21
5.4.230.0190.01714.28
5.4.220.0200.01814.35
5.4.210.0200.01414.37
5.4.200.0200.01214.28
5.4.190.0220.01914.29
5.4.180.0200.02114.24
5.4.170.0210.01614.25
5.4.160.0160.01914.17
5.4.150.0170.01614.31
5.4.140.0170.01713.41
5.4.130.0180.01713.57
5.4.120.0180.01713.39
5.4.110.0180.01713.51
5.4.100.0200.02113.51
5.4.90.0180.01813.46
5.4.80.0170.01413.43
5.4.70.0180.02013.50
5.4.60.0200.01413.38
5.4.50.0170.01713.44
5.4.40.0190.01713.40
5.4.30.0230.02313.42
5.4.20.0190.02113.49
5.4.10.0190.01813.47
5.4.00.0230.01513.21
5.3.290.0260.03113.04
5.3.280.0170.02012.99
5.3.270.0200.01912.99
5.3.260.0210.02112.97
5.3.250.0170.01812.98
5.3.240.0180.01812.89
5.3.230.0180.02012.87
5.3.220.0190.01912.88
5.3.210.0230.01812.98
5.3.200.0250.02612.85
5.3.190.0220.01712.92
5.3.180.0220.01712.94
5.3.170.0190.01913.01
5.3.160.0230.02012.97
5.3.150.0170.02412.91
5.3.140.0200.02212.92
5.3.130.0170.02412.97
5.3.120.0150.01912.96
5.3.110.0190.02612.94
5.3.100.0210.03212.80
5.3.90.0220.02612.78
5.3.80.0240.02112.72
5.3.70.0210.01912.75
5.3.60.0230.02512.59
5.3.50.0250.02812.62
5.3.40.0240.02812.68
5.3.30.0250.02812.76
5.3.20.0270.01912.61
5.3.10.0220.01912.47
5.3.00.0250.02612.40
5.2.170.0280.02312.10
5.2.160.0240.01912.05
5.2.150.0240.02412.05
5.2.140.0340.01712.03
5.2.130.0240.03111.97
5.2.120.0260.02312.00
5.2.110.0280.02412.07
5.2.100.0260.03512.02
5.2.90.0320.03311.98
5.2.80.0270.02212.00
5.2.70.0270.02311.99
5.2.60.0350.01311.95
5.2.50.0310.01611.98
5.2.40.0250.03411.96
5.2.30.0280.02612.00
5.2.20.0270.02011.92
5.2.10.0240.03211.93
5.2.00.0280.02911.94
5.1.60.0250.02711.85
5.1.50.0230.03111.85
5.1.40.0280.02211.85
5.1.30.0200.02111.85
5.1.20.0200.02011.85
5.1.10.0210.01811.85
5.1.00.0180.02011.85
5.0.50.0170.02511.85
5.0.40.0130.01711.85
5.0.30.0110.03711.85
5.0.20.0130.01511.85
5.0.10.0160.02411.85
5.0.00.0130.02311.85
4.4.90.0130.00911.85
4.4.80.0110.01011.85
4.4.70.0100.01611.85
4.4.60.0100.01111.85
4.4.50.0110.01111.85
4.4.40.0130.02211.85
4.4.30.0100.01011.85
4.4.20.0110.00811.85
4.4.10.0110.01911.85
4.4.00.0150.02411.85
4.3.110.0140.01511.85
4.3.100.0130.01011.85
4.3.90.0160.01011.85
4.3.80.0130.02211.85
4.3.70.0170.01311.85
4.3.60.0140.01711.85
4.3.50.0140.01111.85
4.3.40.0100.01911.85
4.3.30.0080.01311.85
4.3.20.0090.01711.85
4.3.10.0080.02011.85
4.3.00.0060.01211.85

preferences:
48.81 ms | 400 KiB | 5 Q