The code is as follows
| 代码如下 |
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$city_str=fopen(cgi_path."/data/weather/city.dat","r");
$city_ch=fread($city_str,filesize(cgi_path."/data/weather/city.dat"));
$city_ch_arr=explode("|",$city_ch);
//如果能匹配到所在市
if(strstr($area_ga,"市")){
foreach($city_ch_arr as $city_ch_arr_item){
if(@strstr($area_ga,$city_ch_arr_item)){
echo $area_ga.'
';
echo $city_ch_arr_item;
$s_city=$city_ch_arr_item;
}
}
}//如果找不到市 那么看看是不是能找到省 有时会有这样的情况：广东省长城宽带 这样的一律归属到该省省府
elseif(strstr($area_ga,"河北")!==false){
$s_city="石家庄";
}
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$city_str=fopen(cgi_path."/data/weather/city.dat","r");
$city_ch=fread($city_str,filesize(cgi_path."/data/weather/city.dat"));
$city_ch_arr=explode("|",$city_ch);
//If it can match the city
if(strstr($area_ga,"city")){
foreach($city_ch_arr as $city_ch_arr_item){
if(@strstr($area_ga,$city_ch_arr_item)){
echo $area_ga.'
';
echo $city_ch_arr_item;
| 代码如下 |
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echo stristr("Hello world!","WORLD");
?>
输出：
world!
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$s_city=$city_ch_arr_item;
}
}
}//If you can’t find the city, then see if you can find the province. Sometimes there will be a situation like this: Guangdong Great Wall Broadband will all belong to the provincial government
elseif(strstr($area_ga,"Hebei")!==false){
$s_city="Shijiazhuang";
}
city.dat contains some cities. The format is like this
Guangzhou|Shenzhen|Shantou|Huizhou
| 代码如下 |
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echo strpos("Hello world!","wo");
?>
输出：
6
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For more details, please check: http://www.bKjia.c0m/phper/18/8304359e6918876b45d02c200bc8f193.htm
stristr()
function finds the first occurrence of a string in another string.
If successful, returns the rest of the string (from the point of the match). If the string is not found, returns false.
| The code is as follows
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Copy code
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echo stristr("Hello world!","WORLD"); |
?>
Output:
world!
strpos introduction
Compared with the first two, characters are returned after a successful search, while strpos returns a position after a successful search. Because the position may be 0, it is more appropriate to use ===false to judge the search failure.
The performance of strpos is better. If you just determine whether the needle is in the string haystack, it is better to use strpos. It will occupy less memory and achieve faster execution speed. However, strpos does not support special characters well, such as Chinese
Example
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echo strpos("Hello world!","wo");<🎜>
?>
Output:
6
Note: This function is case sensitive. For case-insensitive searches, use the stripos() function.
Combining the above examples we draw the conclusion
strstr is case-sensitive, starting from the character, if there is one, it returns true, otherwise it returns false
stristr characters are not case-sensitive. If you start searching from the character, it will return true. Otherwise, it will return false
strpos is case-sensitive. After strpos search is successful, the position will be returned. Because the position may be 0, it is more appropriate to use ===false to judge the search failure.
http://www.bkjia.com/PHPjc/629137.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629137.htmlTechArticle provides us with three functions strstr, stristr, strpos in php during character search. The usage is a bit different. Let’s introduce the related functions. Syntax: string st...
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