frontend input: length: 100,200
background:
minimum database length minLen, maximum length maxLen
how to search sql
frontend input: length: 100,200
background:
minimum database length minLen, maximum length maxLen
how to search sql
this input if there is no'-', how can you do
//'-'php
$str = '100 - 200';
$arr = explode('-',$str);
if($arr[0] > $arr[1])
{
$min = (int)$arr[1];
$max = (int)$arr[0];
}else{
$min = (int)$arr[0];
$max = (int)$arr[1];
}
//sql
select * from sql where minLen >= $min and maxLen <= $max;
first of all, you do not say which language is used in the background, so you do not say the writing of the language, but as a direct database operation. Mysql database has related character interception and character splitting functions, you can use the corresponding functions to intercept and split, and then use it. However, I suggest that it is more appropriate to generate a reasonable sql statement and then query it through the back-end processing.
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