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php字符串转数组方法(如何将字符串转换为数组)


implode 使用一个字符串将数组变成字符串

        <?php                 $array = array('lastname', 'email', 'phone');        $comma_separated = implode(",", $array);                 echo $comma_separated; // lastname,email,phone        var_dump(implode('hello', array())); // string(0) ""        ?>

explode — 使用一个字符串分割另一个字符串,返回一个数组

        <?php        // 示例 1        $pizza  = "piece1 piece2 piece3 piece4 piece5 piece6";        $pieces = explode(" ", $pizza);        echo $pieces[0]; // piece1        echo $pieces[1]; // piece2                 // 示例 2        $data = "foo:*:1023:1000::/home/foo:/bin/sh";        list($user, $pass, $uid, $gid, $gecos, $home, $shell) = explode(":", $data);        echo $user; // foo        echo $pass; // *                 ?>

这里如果字符串没有任何符号可以进行分割的话,就需要考虑别的方法了

str_split — 将字符串转换为数组

    <?php    $str = "Hello Friend";         $arr1 = str_split($str);    $arr2 = str_split($str, 3);         print_r($arr1);    print_r($arr2);         ?>    输出结果    Array(        [0] => H        [1] => e        [2] => l        [3] => l        [4] => o        [5] =>        [6] => F        [7] => r        [8] => i        [9] => e        [10] => n        [11] => d    )         Array    (        [0] => Hel        [1] => lo        [2] => Fri        [3] => end    )

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