file_get_contents 变量和字符串有什么区别?

What's the difference between file_get_contents a variable and a string?

我有源代码:

A.

$this->eArticle["product_link"] = 'http://afamily.vn/doi-song/lop-hoc-toa-tau-day-nham-mat-ve-obama-khien-tre-thich-me-20150530074455878.chn';
print file_get_contents($this->eArticle["product_link"]);

B.

print file_get_contents('http://afamily.vn/doi-song/lop-hoc-toa-tau-day-nham-mat-ve-obama-khien-tre-thich-me-20150530074455878.chn');

在 A 中,结果 return NULL ( screen haven't text )

B中,结果展示网站http://afamily.vn/doi-song/lop-hoc-toa-tau-day-nham-mat-ve-obama-khien-tre-thich-me-20150530074455878.chn

为什么?怎么修?谢谢!

我不太确定你做了什么但是

您可以尝试将其存储在变量中,函数是 file_get_contents() 而不是 file_get_content()注意 "s" 你错过了

$this->eArticle["product_link"] = 'http://afamily.vn/doi-song/lop-hoc-toa-tau-day-nham-mat-ve-obama-khien-tre-thich-me-20150530074455878.chn';

$website_link = trim($this->eArticle["product_link"]);

echo file_get_contents($website_link);

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