php數組工具種

php數組工具類

PHP二維數組去重複項函數

 $v){if($stkeep) $k = $stArr[$k];if($ndformat){$tempArr = explode(",",$v); foreach($tempArr as $ndkey => $ndval) $output[$k][$ndArr[$ndkey]] = $ndval;}else $output[$k] = explode(",",$v); }return $output;}$array2D = array('first'=>array('title'=>'1111','date'=>'2222'),'second'=>array('title'=>'1111','date'=>'2222'),'third'=>array('title'=>'2222','date'=>'3333'));echo "
";print_r(unique_array_2d($array2D,true));/*** 將二維數組通過指定的 key 去重** @param array $arr 要去重的數組* @param array $by  指定key去重,該參數不指定將返回 array()* @return array*/function array_multunique($arr,$by = array()) {$temp = array();foreach($arr as $key => $val) {foreach($by as $v) {$temp[$key] .= isset($val[$v]) ? $val[$v] : '';}}return array_intersect_key($arr,array_unique($temp));}/*$aa = array (      array ('id' => 123, 'name' => '張三' ),       array ('id' => 123, 'name' => '李四' ),       array ('id' => 124, 'name' => '王五' ),       array ('id' => 125, 'name' => '趙六' ),       array ('id' => 126, 'name' => '趙六' )   );  $key = 'id';  array_multunique ($aa, array('id')); */function array_remove_key($array,$keys){if (!is_array($array) || !is_array($keys)){return false;}foreach($array as $t){foreach($keys as $k){unset($t[$k]);}$doc[]=$t;}return $doc;}/*$array = array('0' => array('a' => 'aaaaa', 'b' => 'bbbbb', 'c' => array('d' => 'ddddd', 'e' => 'eeeee')),'1' => array('a' => 'aaaaa', 'b' => 'bbbbb', 'c' => array('d' => 'ddddd', 'e' => 'eeeee')));print_r( array_remove_key($array,array('c')));*/function array_remove_key_val(&$a,$b,$c){foreach ($a as $key=>$value){if ( isset($value[$b]) && ($value[$b]==$c) ){unset($a[$key]);}}}/*$a=array(array('id'=>1,'num'=>10,'type'=>'news'),array('id'=>2,'num'=>100,'type'=>'pic'));print_r( array_remove_key_val($a,"id","1") );*/
數組<=>xml 相互轉換http://hudeyong926.iteye.com/blog/836048
 $value) {        if (is_array($value)) {            array_remove_empty($arr[$key]);        } else {            $value = trim($value);            if ($value == '') {                unset($arr[$key]);            } elseif ($trim) {                $arr[$key] = $value;            }        }    }}/** * 從一個二維數組中返回指定鍵的所有值 * * @param array $arr * @param string $col * * @return array */function array_col_values(& $arr, $col){    $ret = array();    foreach ($arr as $row) {        if (isset($row[$col])) { $ret[] = $row[$col]; }    }    return $ret;}/** * 將一個二維數群組轉換為 hashmap * * 如果省略 $valueField 參數，則轉換結果每一項為包含該項所有資料的數組。 * * @param array $arr * @param string $keyField * @param string $valueField * * @return array */function array_to_hashmap(& $arr, $keyField, $valueField = null){    $ret = array();    if ($valueField) {        foreach ($arr as $row) {            $ret[$row[$keyField]] = $row[$valueField];        }    } else {        foreach ($arr as $row) {            $ret[$row[$keyField]] = $row;        }    }    return $ret;}/** * 將一個二維數組按照指定欄位的值分組 * * @param array $arr * @param string $keyField * * @return array */function array_group_by(& $arr, $keyField){    $ret = array();    foreach ($arr as $row) {        $key = $row[$keyField];        $ret[$key][] = $row;    }    return $ret;}/** * 將一個平面的二維數組按照指定的欄位轉換為樹狀結構 * * 當 $returnReferences 參數為 true 時，返回結果的 tree 欄位為樹，refs 欄位則為節點引用。 * 利用返回的節點引用，可以很方便的擷取包含以任意節點為根的子樹。 * * @param array $arr 未經處理資料 * @param string $fid 節點ID欄位名 * @param string $fparent 節點父ID欄位名 * @param string $fchildrens 儲存子節點的欄位名 * @param boolean $returnReferences 是否在返回結果中包含節點引用 * * return array */function array_to_tree($arr, $fid, $fparent = 'parent_id',    $fchildrens = 'childrens', $returnReferences = false){    $pkvRefs = array();    foreach ($arr as $offset => $row) {        $pkvRefs[$row[$fid]] =& $arr[$offset];    }    $tree = array();    foreach ($arr as $offset => $row) {        $parentId = $row[$fparent];        if ($parentId) {            if (!isset($pkvRefs[$parentId])) { continue; }            $parent =& $pkvRefs[$parentId];            $parent[$fchildrens][] =& $arr[$offset];        } else {            $tree[] =& $arr[$offset];        }    }    if ($returnReferences) {        return array('tree' => $tree, 'refs' => $pkvRefs);    } else {        return $tree;    }}/** * 將樹轉換為平面的數組 * * @param array $node * @param string $fchildrens * * @return array */function tree_to_array(& $node, $fchildrens = 'childrens'){    $ret = array();    if (isset($node[$fchildrens]) && is_array($node[$fchildrens])) {        foreach ($node[$fchildrens] as $child) {            $ret = array_merge($ret, tree_to_array($child, $fchildrens));        }        unset($node[$fchildrens]);        $ret[] = $node;    } else {        $ret[] = $node;    }    return $ret;}/** * 根據指定的索引值對數組排序 * * @param array $array 要排序的數組 * @param string $keyname 索引值名稱 * @param int $sortDirection 排序方向 * * @return array */function array_column_sort($array, $keyname, $sortDirection = SORT_ASC){    return array_sortby_multifields($array, array($keyname => $sortDirection));}/** * 將一個二維數組按照指定列進行排序，類似 SQL 陳述式中的 ORDER BY * * @param array $rowset * @param array $args */function array_sortby_multifields($rowset, $args){    $sortArray = array();    $sortRule = '';    foreach ($args as $sortField => $sortDir) {        foreach ($rowset as $offset => $row) {            $sortArray[$sortField][$offset] = $row[$sortField];        }        $sortRule .= '$sortArray[\'' . $sortField . '\'], ' . $sortDir . ', ';    }    if (empty($sortArray) || empty($sortRule)) { return $rowset; }    eval('array_multisort(' . $sortRule . '$rowset);');    return $rowset;}/*description: 交換數組中兩個元素的位置，元素包括key和value，具體用法見下面的例子$arr = array (11 => 'a', 22 => 'b', 33 => 'c', 44 => 'd' );$res = array_exchange ( $arr, 11, 33 );*/function array_exchange($arr, $arg1, $arg2) {$r = range ( 0, count ( $arr ) - 1 );$res = $res_bak = array_combine ( $r, array_keys ( $arr ) );$change = array ($arg1, $arg2 );list ( $res [array_search ( $change [0], $res_bak )], $res [array_search ( $change [1], $res_bak )] ) = array ($change [1], $change [0] );foreach ( $res as $v ) {$array [$v] = $arr [$v];}return $array;} /*假設：給定一個大數組和一個字串，要求在這個大數組中尋找出比這個字串大的5個元素。對於一個小數組（如：幾十個元素以下的數組），可以採用迴圈的辦法來一個一個進行比較，但是對於大數組來說，這個方法顯然是不行，這需要找一個快速尋找定位的解決辦法。$search = 'arr';$array = array ('abs','acos','acosh','addcslashes','addslashes','aggregate_info','array_diff','array_fill_keys','array_fill','array_filter','base64_encode','basename','bcadd','bccomp',);$arrpos = array_pos($array,$search);   //定位$arr = array_slice($array,$arrpos,5);  //取出數組print_r($arr);快速尋找的結果：Array(    [0] => array_diff    [1] => array_fill_keys    [2] => array_fill    [3] => array_filter    [4] => base64_encode)*/function array_pos($array,$search){if(empty($array)) return false;if(!$search) return 0;sort($array);$array_turn = array_flip($array);if(isset($array_turn[$search])){$arrpos = $array_turn[$search];}else {$tmp_arr = $array;$tmp_arr[] = $search;sort($tmp_arr);$tmp_arr_turn = array_flip($tmp_arr);$arrpos = $tmp_arr_turn[$search];}return $arrpos;}/** * 對資料進行編碼轉換 * @param array/string $data       數組 * @param string $input     需要轉換的編碼 * @param string $output    轉換後的編碼 */function array_iconv($data, $input = 'gbk', $output = 'utf-8') {if (!is_array($data)) {return iconv($input, $output, $data);} else {foreach ($data as $key=>$val) {if(is_array($val)) {$data[$key] = array_iconv($val, $input, $output);} else {$data[$key] = iconv($input, $output, $val);}}return $data;}}/**$str ="array (  'workflowid' => '',  'ishtml' => '0',  'content_ishtml' => '0',  'create_to_html_root' => '0',)";$setting = string2array($str);$setting:Array(    [workflowid] =>     [ishtml] => 0    [content_ishtml] => 0    [create_to_html_root] => 0)**//** * 將字串轉換為數組 * * @paramstring$data字串 * @returnarray返回數組格式，如果，data為空白，則返回空數組 */function string2array($data) {if($data == '') return array();eval("\$array = $data;");return $array;}/** * 返回經stripslashes處理過的字串或數組 * @param $string 需要處理的字串或數組 * @return mixed */function new_stripslashes($string) {if(!is_array($string)) return stripslashes($string);foreach($string as $key => $val) $string[$key] = new_stripslashes($val);return $string;}/*** 將數群組轉換為字串** @paramarray$data數組* @parambool$isformdata如果為0，則不使用new_stripslashes處理，選擇性參數，預設為1* @returnstring返回字串，如果，data為空白，則返回空*/function array2string($data, $isformdata = 1) {if($data == '') return '';if($isformdata) $data = new_stripslashes($data);return addslashes(var_export($data, TRUE));}/*  * 數群組轉換成對象$array = array('name' => 'one',               'sex' => 'two',   'test'=>array('a'=>'ss','dd'),               'old' => 'three'  );$arrayobject = array2Object($array);echo $arrayobject->name;  // oneprint_r(object2Array($arrayobject));   */function array2Object($array){if(!is_array($array)) return $array;$object = new stdClass();if(is_array($array) && count($array) > 0){foreach($array as $name=>$value){$name = strtolower(trim($name));if($name) $object->$name = array2Object($value);}return $object;}else return FALSE;} /*  * 對象轉換成數組  */function object2Array($objParam) {$obj_param = ( array ) $objParam;foreach ( $obj_param as $key => $value ) {if (is_object ( $value )) {object2Array ( $value );$obj_param [$key] = ( array ) $value;}}return $obj_param;}//數組開頭添加元素 保持原始key不變 arrayUnshift($arr, array('test'=>'4'))function arrayUnshift($arrParams, $arrAdd) {$arr_keys = array ();$arr_values = array ();$arr_add_keys = array_keys ( $arrAdd );$arr_keys = array ($arr_add_keys [0] );$arr_values = array ($arrAdd [$arr_add_keys [0]] );foreach ( $arrParams as $key => $value ) {array_push ( $arr_keys, $key );array_push ( $arr_values, $value );}$arr_result = array_combine ( $arr_keys, $arr_values );return $arr_result;} //擷取多維陣列下特定鍵下的值，並產生一維數組 function getKey2Array(array $arr, $key){if (!trim($key)) return false;preg_match_all("/\"$key\";\w{1}:(?:\d+:|)(.*?);/", serialize($arr), $output);return $output[1];}//多維陣列轉一維數組 $arr=array('123.html','456.html',array('dw.html','fl.html',array('ps.html','fw.html')),'ab.html');function rebuild_array($arr){  //rebuild a arraystatic $tmp=array();for($i=0; $i 
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