PHP weight calculation method code sharing _php Tutorial

Copy CodeThe code is as follows:
/* Vim:set expandtab tabstop=4 shiftwidth=4: */
// +------------------------------------------------------------------------
Name: Weight Calculation
Description: Slightly modified, can also be used for word segmentation, frequency statistics, full-text search and garbage detection
DATE:2013/12/16 08:51

Class Weight {
Protected $aDict = Array (array ());
Protected $aItems = Array ();
protected $sLastRule;
Protected $aMatchs = Array ();
Protected $aShow = Array ();

Private Function init () {
Clears the record's match table and output results
unset ($this->ashow);
}

Public Function NewItems ($mItems) {
Import a new project
$this->aitems = (Is_array ($mItems))? $mItems: Array ($mItems);
$this->init ();
}

Public Function newtable (array $aTable) {
Import a new table and generate a dictionary
foreach ($aTable as $iTableKey = = $sTableLine) {
$aTableLine = Explode (', ', Str_replace (' | ', ', ', $sTableLine));
$setter = function ($v, $k, $paraMeter) {
$k 1 = $paraMeter [0]; $oWeight = $paraMeter [1];
$oWeight->gendict ($v, $k 1);
};
Array_walk ($aTableLine, $setter, Array ($iTableKey, $this));
}
$this->init ();
}

Public Function getshow ($sRule = ' Max ') {
Get the final display result
if (Empty ($this->aitems) | | empty ($this->adict))
return Array ();
if (Empty ($this->ashow) | | $sRule! = $this->slastrule)
return $this->genshow ($sRule);
return $this->ashow;
}

Public Function Genshow ($sRule) {
$aShow = Array ();
$aMatchs = Array ();
$getter = function ($v, $k, $oWeight) use (& $aShow, & $aMatchs, $sRule) {
$t = Array_count_values ($oWeight->matchword ($v));
$aMatchs [] = $t;
Switch ($sRule) {
Case ' Max ':
$aShow [$k] = Array_keys ($t, Max ($t));
Break
}
};
Array_walk ($this->aitems, $getter, $this);
$this->ashow = $aShow;
$this->amatchs = $aMatchs;
return $aShow;
}

Private Function Gendict ($mWord, $iKey = ") {
$iInsertPonit = count ($this->adict);
$iCur = 0; Current node number
foreach (Str_split ($mWord) as $iChar) {
if (Isset ($this->adict[$iCur [$iChar])) {
$iCur = $this->adict[$iCur] [$iChar];
Continue
}
$this->adict[$iInsertPonit] = array ();
$this->adict[$iCur] [$iChar] = $iInsertPonit;
$iCur = $iInsertPonit;
$iInsertPonit + +;
}
$this->adict[$iCur [' ACC '] [] = $iKey;

}

function Matchword ($sLine) {
$iCur = $iOffset = $iPosition = 0;
$sLine. = "n";
$iLen = strlen ($sLine);
$aReturn = Array ();
while ($iOffset < $iLen) {
$sChar = $sLine {$iOffset};
if (Isset ($this->adict[$iCur [$sChar])) {
$iCur = $this->adict[$iCur] [$sChar];
if (Isset ($this->adict[$iCur [' ACC '])) {
$aReturn = Array_merge ($aReturn, $this->adict[$iCur [' acc ']);

$iPosition = $iOffset + 1;
$iCur = 0;
}
} else {
$iCur = 0;
$iOffset = $iPosition;
$iPosition = $iOffset + 1;
}
+ + $iOffset;
}
return $aReturn;
}
}

?>

External invocation Example
Copy the Code code as follows:
$aItems = Array (
' Chinaisbig ',
' Whichisnot ',
' Totalyrightforme ',
);
$aTable = Array (
' China,is|small ',
' China,big|me ',
' China,is|big,which|not,me ',
' Totaly|right,for,me ',
);

$oWeight = new Ttrie;
$oWeight->newitems ($aItems);
$aResult = $oWeight->newtable ($aTable);

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