2.array_keys() 数组中找到 指定 value值 的 key 值 1 2 $a=array("Volvo"=>"XC90","BMW"=>"X5","Toyota"=>"Highlander"); print_r(array_keys($a,"Highlander")); 结果: 3.array_map() 数组中的每个值都运行指定函数 并且返回 新的数组。 1 2 3 4 5 6 7 8 9 10 11 12 13 <?ph...
The PHP array_keys() function returns keys of a given array. You can also specify a value, so that array_keys() returns only those keys whose value matched this value. array_keys() function returns keys as an indexed array. Syntax of array_keys() The syntax of array_keys() function ...
(7)array_keys 获取数组的key列表 (8)array_values 获取数组的值列表 (9)array_unique 删除数组中的重复值 (10)array_push将一个或多个元素插入数组的末尾(入栈) (11)array_pop 弹出并返回 array 数组的最后一个单元(出栈) (12)array_walk 使用用户自定义函数对数组中的每个元素做回调处理 14、PHP处理字符...
();//打印 $bprint_r($arr["b"]);//打印 PHP 解释程序的路径(如果 PHP 作为 CGI 使用的话)//例如:/usr/local/bin/phpecho$arr["_"];//打印命令行参数(如果有的话)print_r($arr["argv"]);//打印所有服务器变量print_r($arr["_SERVER"]);//打印变量数组的所有可用键值print_r(array_keys(...
array_push($newArray, $row); } But probably come up with a better name than `newArray` ;) Note: not PHP expert. July 8, 2013 at 6:33 pm#141950 chrisburton Participant @TheDocThat’s exactly what I’m trying to figure out. ...
The PHP array_rand() function returns a random key from an array. Or you can tell array_rand() to return a specific number of keys taken from an array randomly. In case array_rand() returns multiple keys, it returns them as array.
<?php // Function to extract and return the first element of an associative array function array_1st_element($my_array) { // Extract the first key of the array using list() and array_keys() list($k) = array_keys($my_array); // Create a new array with the first key and its ...
/* *@param String $url是请求地址 *@param Array $getData 是GET数据 *@param Array $postData...); //整合两部分get数据 $getData = array_merge($get...
PHP Array: Exercise-16 with Solution Write a PHP script to get the largest key in an array. Sample Solution: PHP Code: <?php$ceu=array("Italy"=>"Rome","Luxembourg"=>"Luxembourg","Belgium"=>"Brussels","Denmark"=>"Copenhagen","Finland"=>"Helsinki","France"=>"Paris","Slovakia"=>"Br...