implode
- (PHP 4, PHP 5, PHP 7)
- implode — Join array elements with a string
- implode — 将一个一维数组的值转化为字符串
Description
string implode ( string $glue , array $pieces )string implode ( array $pieces )//Join array elements with a glue string.//用 glue 将一维数组的值连接为一个字符串。Note:
- implode() can, for historical reasons, accept its parameters in either order. For consistency with explode(), however, it may be less confusing to use the documented order of arguments.
- 因为历史原因，implode() 可以接收两种参数顺序，但是 explode() 不行。不过按文档中的顺序可以避免混淆。
Parameters
glue
- Defaults to an empty string.
- 默认为空的字符串。
pieces
- The array of strings to implode.
- 你想要转换的数组。
Return Values
- Returns a string containing a string representation of all the array elements in the same order, with the glue string between each element.
- 返回一个字符串，其内容为由 glue 分割开的数组的值。
Examples
<?php/** * Created by PhpStorm. * User: zhangrongxiang * Date: 2018/2/17 * Time: 下午10:52 */$array ??????????= array( '`lastname`', '`email`', '`phone`' );$comma_separated = implode( ",", $array );//`lastname`,`email`,`phone`echo $comma_separated . PHP_EOL;// Empty string when using an empty array:echo '-------------------------' . PHP_EOL;print_r( implode( 'hello', array() ) ); // string(0) ""echo '-------------------------' . PHP_EOL;$id_nums ?= array( 1, 6, 12, 18, 24 );$id_nums ?= implode( ", ", $id_nums );$sqlquery = "Select `name`,email,phone from `usertable` where user_id IN ($id_nums)";//Select `name`,email,phone from `usertable` where user_id IN (1, 6, 12, 18, 24)echo $sqlquery . PHP_EOL;$sqlquery = "Select $comma_separated from `usertable` where user_id IN ($id_nums)";//Select `lastname`,`email`,`phone` from `usertable` where user_id IN (1, 6, 12, 18, 24)echo $sqlquery . PHP_EOL;$ar = array( "hello", null, "world" );echo implode( ',', $ar ) . PHP_EOL; // hello,,world$picnames = array( "pic1.jpg", "pic2.jpg", "pic3.jpg", "pic4.jpg", "pic5.jpg", "pic6.jpg", "pic7.jpg" );$allpics ?= implode( "|", array_slice( $picnames, 0, 5 ) );//pic1.jpg|pic2.jpg|pic3.jpg|pic4.jpg|pic5.jpgecho $allpics . PHP_EOL;$test = implode( [ "one", 2, 3, "four", 5.67 ] );echo $test . PHP_EOL;//one23four5.67/////////////////////////////////////////////////////////////////////////////////////class Foo { ???protected $title; ???????public function __construct( $title ) { ???????$this->title = $title; ???} ???????public function __toString() { ???????return $this->title; ???}}$array = [ ???new Foo( 'foo' ), ???new Foo( 'bar' ), ???new Foo( 'qux' )];//foo; bar; quxecho implode( '; ', $array );See
- http://php.net/manual/en/function.implode.php