PHP之string之implode()函數使用

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implode

• (PHP 4, PHP 5, PHP 7)
• implode — Join array elements with a string
• implode — 將一個一維數組的值轉化為字串

Description

string implode ( string $glue , array $pieces )string implode ( array $pieces )//Join array elements with a glue string.//用 glue 將一維數組的值串連為一個字串。

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.
• 因為曆史原因，implode() 可以接收兩種參數順序，但是 explode() 不行。不過按文檔中的順序可以避免混淆。

Parametersglue

• Defaults to an empty string.
• 預設為空白的字串。

pieces

• The array of strings to implode.
• 你想要轉換的數組。

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.
• 返回一個字串，其內容為由 glue 分割開的數組的值。

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

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PHP之string之implode()函數使用