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<?php
echo '<p>字符串函數(shù)（三）：字符串與數(shù)組之間的轉(zhuǎn)換</p><hr color="green">';
/醫(yī)院
 * 1.str_split($str,$length)
 * 2.explode($delimiter,$str,$num)
 * 3.imglode($glue,$str)
 */

echo '<pre>';
$str = 'html,css,jquery,php,mysql,thinkphp';
echo '<p>原始字符串：'.$str.'</p>';
//1.str_split($str,$length)
//print_r(str_split($str));
print_r(str_split($str,5));
// echo count(str_split($str));
echo '<hr color="red">';
//2.explode($delimiter,$str,$num)
print_r(explode(',',$str));
print_r(explode(',',$str,5));

//3/implode($glue,$str):按分隔符，將一堆數(shù)組拼裝成字符串
$arr2 = explode(',',$str);
print_r($arr2);
echo implode(',',$arr2),'<br>';
echo implode('醫(yī)院*',$arr2),'<br>';
echo implode('',$arr2),'<br>';