问题描述
如何在php中修剪一些单词?像这样的例子
How to trim some word in php? Example like
pid="5" OR pid="3" OR
我想删除最后一个OR
推荐答案
我建议使用 implode() 将这样的 SQL 表达式粘在一起.首先构建一个简单表达式的数组，然后用 OR 对它们进行内爆:
I suggest using implode() to stick together SQL expressions like that. First build an array of simple expressions, then implode them with OR:
$pids = array('pid = "5"', 'pid = "3"');
$sql_where = implode(' OR ', $pids);
现在 $sql_where 是字符串 'pid = "5" OR pid = "3"'.您不必担心剩余的 OR，即使 $pids 中只有一个元素.
Now $sql_where is the string 'pid = "5" OR pid = "3"'. You don't have to worry about leftover ORs, even when there is only one element in $pids.
此外，一个完全不同的解决方案是将 " false" 附加到您的 SQL 字符串中，这样它就会以 "... OR false" 结尾，这将使它成为有效的表达.
Also, an entirely different solution is to append " false" to your SQL string so it will end in "... OR false" which will make it a valid expression.
@RussellDias 的回答是您问题的真正答案，这些只是一些可供考虑的替代方案.
@RussellDias' answer is the real answer to your question, these are just some alternatives to think about.
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