把PHP的数组变成带单引号的字符串

$projectcode_array = ["20130719","20130718","20130717"];

通过

function change_to_quotes($str) {    return sprintf("'%s'", $str); }$new_projectcode_array =  implode(',', array_map('change_to_quotes', $projectcode_array ));$new_projectcode_array="'20130719','20130718','20130717'";

这样

$where['_string']="abc in ($new_projectcode_array)";