Question

如何删除characters_to_eliminate循环中每个字符串的第一个字符foreach？编辑：characters_to_eliminate是3个随机字符，它们并不总是相同。在第6行，我尝试：

$val = substr($val, 3);

但只删除数组中第一个值的前3个字符。

function multiexplode ($delimiters,$string) {
    $ary = explode($delimiters[0],$string);
    array_shift($delimiters);
    if($delimiters != NULL) {
        foreach($ary as $key => $val) {
            $ary[$key] = multiexplode($delimiters, $val);
        }
    }
    return  $ary;
}

// Example of use
$string = "characters_to_eliminate abc, characters_to_eliminate def: characters_to_eliminate ghi, characters_to_eliminate jkl";
$delimiters = Array(",",":");

$res = multiexplode($delimiters,$string);
echo '<pre>';
print_r($res);
echo '</pre>';

Answer 1

尝试foreach($ary as $key => &$val)

为了能够使用$value在&之前的循环中直接修改数组元素。在这种情况下，该值将通过引用分配。（通过http://php.net/manual/en/control-structures.foreach.php）

Answer 2

str_replace()

$string = str_replace('characters_to_eliminate ', '', $string); // abc, def: ghi, jkl

删除foreach中每个字符串的第一个字符

2 个答案: