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1、数组转字符串implode方法介绍: function implode ($glue = "", array $pieces) {} 主要有两个参数 使用$test = array("hello","world","php"); echo implode("-",$test); 结果: $test = array("h"=>"hello","w"=>"world","p"=>"php"); echo implode("-",$test); 2、字符串分割成数组2.1 按某个字符分割function explode ($delimiter, $string, $limit = null) {} explode $str="hello-world-php"; $result = explode("-", $str); var_dump($result); $result = explode("-", $str,2); var_dump($result); 输出结果: array(3) { [0]=> string(5) "hello" [1]=> string(5) "world" [2]=> string(3) "php" } array(2) { [0]=> string(5) "hello" [1]=> string(9) "world-php" } 2.2 按距离读取可能字符串不用分割,但是需要把每个字符拿出来,也就是一个一个读出来 ** * Convert a string to an array * @link http://php.net/manual/en/function.str-split.php * @param string $string <p> * The input string. * </p> * @param int $split_length [optional] <p> * Maximum length of the chunk. * </p> * @return array If the optional split_length parameter is * specified, the returned array will be broken down into chunks with each * being split_length in length, otherwise each chunk * will be one character in length. * </p> * <p> * false is returned if split_length is less than 1. * If the split_length length exceeds the length of * string, the entire string is returned as the first * (and only) array element. * @since 5.0 */ function str_split ($string, $split_length = 1) {} 数组如果指定了可选的split_length参数,则返回的数组将被分解为长度为split_length的块,否则每个块将是一个字符长度。 $str = "hello"; var_dump(str_split($str,2)); 1 2 array(3) { [0]=> string(2) "he" [1]=> string(2) "ll" [2]=> string(1) "o" }
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