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在字符串指定位置插入一段字符串的php代码_php技巧

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Release: 2016-05-17 09:27:51
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复制代码 代码如下:

//插入一段字符串
function str_insert($str, $i, $substr)
{
for($j=0; $j$startstr .= $str[$j];
}
for ($j=$i; $j$laststr .= $str[$j];
}
$str = ($startstr . $substr . $laststr);
return $str;
}

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