Home > Website Builders > Cloud Servers

Array function library: Array_keys

Source: Internet
Author: User
Keywords array_keys php Chinese function manual array function library
Tags aliyun array array function library array_keys function function library html http
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Array_keys

(PHP4)

Array_keys---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Returns all index values for an array

Syntax: array array_keys (array input [, mixed search_value]);

Description:

This function returns the index value of the number and string from the parameter input, and the parameter search_value is not required and returns all index values from input, if specified, returning only the index value of the specified value.

Example:

<?php

$array = Array (0 =>, "color" => "red");

Array_keys ($array); Returns Array (0, "color")

$array = Array (1, 100, 2, 100);

Array_keys ($array, 100); Returns Array (0, 2)

?>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
java hash function library oracle function return array javascript array map function php function return array array as function argument c function array javascript array function parameter
Related Article
Some suggestions for improving SQL execution efficiency
A collection of sophisticated SQL statement techniques
3 Steps to address SQL injection pitfalls
SQL Optimization Experience Summary 34
Search results sorted by matching fields

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

Hot Article
Hot Tags
computing conference access forum computer class data get http html applications
Popular Keywords
html add blank space register business logo register ssl certificate full site sign in sign up node js build cloud register register a subdomain in python network management system tutorial how to learn computer science by myself

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More