Corresponding operations of php on two-dimensional arrays

array_keys($array) //返回所有键名 array_values($array) //返回所有键值 $result=array_reverse($input); //将数组颠倒，不保留键名 $result_keyed=array_reverse($input,true); //将数组颠倒，保留键名 array_keys($array,"blue"); //返回值为blue的键名

function unique_arr($array2D,$stkeep=false,$ndformat=true) { // 判断是否保留一级数组键 (一级数组键可以为非数字) if($stkeep) $stArr = array_keys($array2D); // 判断是否保留二级数组键 (所有二级数组键必须相同) if($ndformat) $ndArr = array_keys(end($array2D)); //降维,也可以用implode,将一维数组转换为用逗号连接的字符串 foreach ($array2D as $v){ $v = join(",",$v); $temp[] = $v; } //去掉重复的字符串,也就是重复的一维数组 $temp = array_unique($temp); //再将拆开的数组重新组装 foreach ($temp as $k => $v) { if($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; }

$array2D = array('first'=>array('title'=>'1111','date'=>'2222'),'second'=>array('title'=>'1111','date'=>'2222'),'third'=>array('title'=>'2222','date'=>'3333')); print_r($array2D); print_r(unique_arr($array2D,true));

function printr($arr) { echo '
'; print_r($arr); echo '
        
'; }
        

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$a = array('a'=>1,2); sort($a); printr($a); rsort($a); printr($a); /*Array ( [0] => 1 [1] => 2 ) Array ( [0] => 2 [1] => 1 ) */

$a = array('a'=>1,2); asort($a); printr($a); arsort($a); printr($a); /* Array ( [a] => 1 [0] => 2 ) Array ( [0] => 2 [a] => 1 ) */

$a = array('a'=>1,2); ksort($a); printr($a); krsort($a); printr($a); /* Array ( [0] => 2 [a] => 1 ) Array ( [a] => 1 [0] => 2 ) */

/** * @package BugFree * @version $Id: FunctionsMain.inc.php,v 1.32 2005/09/24 11:38:37 wwccss Exp $ * * * Sort an two-dimension array by some level two items use array_multisort() function. * * sortArr($Array,"Key1","SORT_ASC","SORT_RETULAR","Key2"……) * @author Chunsheng Wang  * @param array $ArrayData the array to sort. * @param string $KeyName1 the first item to sort by. * @param string $SortOrder1 the order to sort by("SORT_ASC"|"SORT_DESC") * @param string $SortType1 the sort type("SORT_REGULAR"|"SORT_NUMERIC"|"SORT_STRING") * @return array sorted array. */ function sortArr($ArrayData,$KeyName1,$SortOrder1 = "SORT_ASC",$SortType1 = "SORT_REGULAR") { if(!is_array($ArrayData)) return $ArrayData; // Get args number. $ArgCount = func_num_args(); // Get keys to sort by and put them to SortRule array. for($I = 1;$I < $ArgCount;$I ++) { $Arg = func_get_arg($I); if(!eregi("SORT",$Arg)) { $KeyNameList[] = $Arg; $SortRule[] = '$'.$Arg; } else $SortRule[] = $Arg; } // Get the values according to the keys and put them to array. foreach($ArrayData AS $Key => $Info) { foreach($KeyNameList AS $KeyName) ${$KeyName}[$Key] = strtolower($Info[$KeyName]); } // Create the eval string and eval it. $EvalString = 'array_multisort('.join(",",$SortRule).',$ArrayData);'; eval ($EvalString); return $ArrayData; }

//################# 示例 ################# $arr = array( array( 'name' => '学习', 'size' => '1235', 'type' => 'jpe', 'time' => '1921-11-13', 'class' => 'dd', ), array( 'name' => '中国功夫', 'size' => '153', 'type' => 'jpe', 'time' => '2005-11-13', 'class' => 'jj', ), array( 'name' => '编程', 'size' => '35', 'type' => 'gif', 'time' => '1997-11-13', 'class' => 'dd', ), array( 'name' => '中国功夫', 'size' => '65', 'type' => 'jpe', 'time' => '1925-02-13', 'class' => 'yy', ), array( 'name' => '中国功夫', 'size' => '5', 'type' => 'icon', 'time' => '1967-12-13', 'class' => 'rr', ), ); echo '
'; print_r($arr); echo '
'; //注意：按照数字方式排序时 153 比 65 小 $temp = sortArr($arr,"name","SORT_ASC","type","SORT_DESC","size","SORT_ASC","SORT_STRING"); print_r($temp); echo '
';
        

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function rebuild_array($arr){ //rebuild a array static $tmp=array(); for($i=0; $i
        

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$arr=array('123.html','456.html',array('dw.html','fl.html',array('ps.html','fw.html')),'ab.html'); // 定义一个三维数组，用来检测我们的函数 echo '
'; print_r(rebuild_array($arr)); echo '
';
        

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function array_remove_empty(&$arr, $trim = true) { foreach ($arr as $key => $value) { if (is_array($value)) { array_remove_empty($arr[$key]); } else { $value = trim($value); if ($value == '') { unset($arr[$key]); } elseif ($trim) { $arr[$key] = $value; } } } }

$a = array(array(3),2,'',array('',23),0); array_remove_empty($a); printr($a); // printr 函数请在本文中找

function getall_by_key(array $arr, $key){ if (!trim($key)) return false; preg_match_all("/\"$key\";\w{1}:(?:\d+:|)(.*?);/", serialize($arr), $output); return $output[1]; } $testArr = array('111'=> 100, 'out'=> 200, '333' => array('out' => 310, array(321, 322, 'out' => "this is a test"))); printr(getall_by_key($testArr, 'out'));