<div class="cnblogs_code" onclick="cnblogs_code_show('68b6f079-860f-4a67-b396-cb98e38ef031')">
<img style="display: none" id="code_img_closed_68b6f079-860f-4a67-b396-cb98e38ef031" class="code_img_closed" src="https://www.jb51.cc/res/2019/02-07/12/1c53668bcee393edac0d7b3b3daff1ae.gif" alt=""><img id="code_img_opened_68b6f079-860f-4a67-b396-cb98e38ef031" class="code_img_opened" onclick="cnblogs_code_hide('68b6f079-860f-4a67-b396-cb98e38ef031',event)" src="https://www.jb51.cc/res/2019/02-07/12/405b18b4b6584ae338e0f6ecaf736533.gif"><span class="cnblogs_code_collapse">代码
<div id="cnblogs_code_open_68b6f079-860f-4a67-b396-cb98e38ef031">
PHP