[PHP知识库]php 常用函数

字符串转数组

str_split

<?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
)

explode

<?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; // *
 
?>