The content of this article is about the code for cutting PHP two-dimensional array into strings and removing duplicate values. Now I share it with you. Friends in need can refer to it.
The application scenario lies in the need to query All relevant ids and rent_contract_parent_id of a certain rent_contract_id are then assembled into a string for later query operation using FIND_IN_SET:
// select rent_contract_id,rent_contract_parent_id from tb_rent_contract where rent_contract_id =797 or rent_contract_parent_id = 797
$arr = array(array('rent_contract_id'=>555,'rent_contract_parent_id'=>666),array('rent_contract_id'=>777,'rent_contract_parent_id'=>555),array('rent_contract_id'=>888,'rent_contract_parent_id'=>777));
$str_arr = ""; //空字符串,便于遍历后的追加
foreach ($arr as $ke => $va) {
$str_arr .= implode(',', $va).",";
}
$arr_str = explode(",",$str_arr); //字符串组装为数组
$arr_str = array_unique($arr_str);//去除重复的值
$str = implode(',',$arr_str); //分割为字符串
var_dump($str); //string(16) "555,666,777,888,"The above is the detailed content of PHP cut two-dimensional array into string and remove duplicate values. For more information, please follow other related articles on the PHP Chinese website!
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