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php字符串拼接问题，大侠来看看

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Release： 2016-06-23 14:14:29
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$r=Db::singleSqlRow($s);$content="userName=$r['userName']";
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$r是个数组，我这样下出错了，我知道把$r['userName']先定义一个变量就可以了，能否把$r['userName']自动当成变量处理


回复讨论(解决方案)

$content="userName={$r['userName']}";
对于易引起歧义的应当用{}括起来。

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php字符串拼接问题，大侠来看看
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