is array in php

First type Want to traverse the entire two-dimensional array with foreach (): $team = Array (' lk ', ' OK '); $book = Array (' Linux server Configuration and Management ', $team); foreach ($book as $k => $val)//for $book each $value (AS)

Copy Code code as follows: function Getarray_postgresql ($ARRAYSTR) { $REGX 1 = '/^{(. *)}$/'; $REGX 2 = "/\" (\\\\\\\\|\\\\\ "|[ ^\"])+)\"| [^,]+/"; $REGX 3 = '/^[^ '].*$|^ ' (. *) "$/"; $match = null; Preg_match ($regx 1, $arraystr,

It's very simple to delete an array element in PHP, but sometimes deleting an array requires some sort of index. We'll use the relevant function, and here we'll introduce the difference between using Unset,array_splice to remove elements from an

First look at the key name is string, the difference between the two: Copy Code code as follows: $arr 1 = Array (' A ' => ' PHP '); $arr 2 = Array (' A ' => ' JAVA '); If the key name is a character and the key name is the same,

Often, developers find it useful to use this data structure in PHP to sort values or array elements. PHP provides some sort functions that are appropriate for a variety of arrays, which allow you to arrange elements within an array, and also allow

Method One: Copy Code code as follows: PHP StdClass object to array function Object_array ($array) { if (Is_object ($array)) { $array = (array) $array; } if (Is_array ($array)) { foreach ($array as $key => $value) {

This article mainly introduces the PHP statistics array elements of the method of the relevant data, the need for friends can refer to the COUNT (): counts the number of elements in an array; sizeof (): and Count () has the same purpose, both

Today, when I was testing the php program, I encountered an error: Cannot use a scalar value as an array. The error message returned a few days ago. At that time, it seemed like I had fine-tuned it, I did not go deep into it, but today it appears

The following is a demo two-digit array. the number of arrays in $ arr is not fixed. To generate the following results. That is, every array in $ arr is a combination of intersection. {Code ...} The following is a demo two-digit array. the number

But how can we traverse the binary tree array produced by this method? My practice is as follows: Copy codeThe Code is as follows: Function preTree ($ cat ){ Foreach ($ cat as $ c ){ ?> "> : "> : If (isset ($ s ['childrens']) {?>

PHPXMLToArray converts XML to an array. For more information, see. The code is as follows: // Convert Xml to an array, including the root key Function xml_to_array ($ xml) { $ Reg = "/] *> ([\ x00-\ xFF] *) /"; If (preg_match_all ($ reg, $

Array_merge discards the key of the original number, retains the key in the string form, and then forms a new array. no matter whether the key name is the same or not, it is not merged, keys in the string format must be merged unless the key name

Traversing an array is the most common in programming, and here's a discussion of the for and foreach two methods: First, we'll prepare two arrays for traversal: $arr 1=array (1=> ' A ', 3=>22, 5=> ' B ', 4=> ' C ', 8=> ' d '); $arr 2=array (' a ' +

PHP provides the simplexml_load_string method to parse strings in XML format and return the SimpleXMLElement object. However, the general array is more suitable, so it will also be converted to a common array... PHP provides the

'规则缓冲清除', 'Starting replication'=>'开始规则', 'Wait -> Brk'=>'镜像状态改变,由等待到停止状态', 'OK -> Wait'=>'镜像状态改变,由OK到等待状态',);$logs = sd_get_log_sys_by_uuid(uuid);for($i=0; $i $v) { $pos = strpos($logs[$i], $k); if($pos !== false){

Method One: PHP StdClass object to array function Object_array ($array) { if (Is_object ($array)) { $array = (array) $ Array; } if (Is_array ($array)) { foreach ($array as $key = = $value) { $array [$key]

This article is a sorted two-dimensional data. we need to insert an element into the array, which needs to be sorted after being saved to the data. the code is as follows: & lt ;? Php *** two-dimensional array in reverse order This article is a

This article mainly introduces PHP simple implementation of two-dimensional array of matrix transpose operation, involving PHP for two-dimensional array traversal and operation skills, the need for friends can refer to the next Specific as follows:

This article mainly introduces the implementation of PHP to the two-dimensional array of all the one-dimensional array to add values, involving PHP for the array of traversal, conversion, assignment and other related operations skills, the need for

This article mainly introduces the use of recursive algorithm of PHP infinite Traversal array, combined with examples of PHP for one-dimensional arrays, two-dimensional arrays and multi-dimensional irregular array of general traversal techniques,