zhuzhichao /
ip-location-zh
| Conditions | 10 |
| Paths | 15 |
| Total Lines | 49 |
| Code Lines | 28 |
| Lines | 0 |
| Ratio | 0 % |
| Changes | 2 | ||
| Bugs | 0 | Features | 0 |
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
| 1 | <?php namespace Zhuzhichao\IpLocationZh; |
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| 18 | public static function find($ip) |
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| 19 | { |
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| 20 | if (empty( $ip ) === true) { |
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| 21 | return 'N/A'; |
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| 22 | } |
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| 23 | |||
| 24 | $nip = gethostbyname($ip); |
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| 25 | $ipdot = explode('.', $nip); |
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| 26 | |||
| 27 | if ($ipdot[0] < 0 || $ipdot[0] > 255 || count($ipdot) !== 4) { |
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| 28 | return 'N/A'; |
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| 29 | } |
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| 30 | |||
| 31 | if (isset( self::$cached[$nip] ) === true) { |
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| 32 | return self::$cached[$nip]; |
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| 33 | } |
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| 34 | |||
| 35 | if (self::$fp === null) { |
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| 36 | self::init(); |
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| 37 | } |
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| 38 | |||
| 39 | $nip2 = pack('N', ip2long($nip)); |
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| 40 | |||
| 41 | $tmp_offset = (int) $ipdot[0] * 4; |
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| 42 | $start = unpack('Vlen', |
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| 43 | self::$index[$tmp_offset].self::$index[$tmp_offset + 1].self::$index[$tmp_offset + 2].self::$index[$tmp_offset + 3]); |
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| 44 | |||
| 45 | $index_offset = $index_length = null; |
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| 46 | $max_comp_len = self::$offset['len'] - 1024 - 4; |
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| 47 | for ($start = $start['len'] * 8 + 1024; $start < $max_comp_len; $start += 8) { |
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| 48 | if (self::$index{$start}.self::$index{$start + 1}.self::$index{$start + 2}.self::$index{$start + 3} >= $nip2) { |
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| 49 | $index_offset = unpack('Vlen', |
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| 50 | self::$index{$start + 4}.self::$index{$start + 5}.self::$index{$start + 6}."\x0"); |
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| 51 | $index_length = unpack('Clen', self::$index{$start + 7}); |
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| 52 | |||
| 53 | break; |
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| 54 | } |
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| 55 | } |
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| 56 | |||
| 57 | if ($index_offset === null) { |
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| 58 | return 'N/A'; |
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| 59 | } |
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| 60 | |||
| 61 | fseek(self::$fp, self::$offset['len'] + $index_offset['len'] - 1024); |
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| 62 | |||
| 63 | self::$cached[$nip] = explode("\t", fread(self::$fp, $index_length['len'])); |
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| 64 | |||
| 65 | return self::$cached[$nip]; |
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| 66 | } |
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| 67 | |||
| 93 | } |
