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怎么在字符串前面加上www
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- 2016-06-23 13:56:551171browse
已知字符串$aa=efwef
怎么在字符串前面加上www 变成wwwefwef
回复讨论(解决方案)
字符串拼接 .
$aa='www'.'efwef';
echo $aa;
<?php$aa = 'efwef';$aa = 'www'.$aa;echo $aa;?>
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