Questions about PHP importing Excel files

I use the thinkphp framework, in the import of Excel, when the Excel file inside the data when there will be an AJAX error and speed a bit slow, excel in less data when the situation, For example, I have 3,000 data in Excel imported into five hundred or six hundred will have this Ajax error, ask the big God answer
_ajaxerror:function (data, transport) {
if (Data.status = = 0 && Transport = = null)
Alert ("The page is not served from a server! Ajax call failed ");
else if (typeof console! = "undefined")
Console.log ("Ajax error:" + Data.status + "" + transport);
},

Reply to discussion (solution)

There's no answer, so sad.

Try to change the value of Memory_limit in php.ini.

Change the value of the Memory_limit in the php.ini. Try it or not.

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