The following article summarizes several PHP program examples for removing Chinese and English spaces at the beginning and end of strings. Here, regular replacement and trim series functions are used to delete them. Let’s take a look.
Example 1.trim function removes spaces
The trim() function is used to remove spaces at the beginning and end of a string, and returns the string with the spaces removed. The syntax is as follows:
string trim(string str[,string charlist]);
The ltrim() function is used to remove spaces on the left side of a string or specify a string. The syntax is as follows:
string ltrim(string str[,string charlist]);
The rtrim() function is used to remove spaces and special characters on the right side of a string. The syntax is as follows:
string rtrim(string str[,string charlist]);
The code is as follows
| 代码如下 |
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$a="(a,b,c,)";
echo $a."
"; //输出：(a,b,c,)
$b=trim($a,"()"); //去除字符串首尾含有的字符“(”或“)”
echo $b."
"; //输出：a,b,c,
$c=trim($a,"(,)"); //去除字符串首尾含有的字符“(”、“,”或“)”
echo $c."
"; //输出：a,b,c
?>
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$a="(a,b,c,)";
echo $a."
"; //Output: (a,b,c,)
$b=trim($a,"()"); //Remove the characters "(" or ")" at the beginning and end of the string
echo $b."
"; //Output: a,b,c,
$c=trim($a,"(,)"); //Remove the characters "(", "," or ")" at the beginning and end of the string
echo $c."
"; //Output: a,b,c
?>
| 代码如下 |
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|
function mbTrim($str)
{
return mb_ereg_replace('(^( | )+|( | )+$)', '', $str);
}
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Output result:
(a,b,c,)
| 代码如下 |
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|
$str=" www.bKjia.c0m ";
$str = mb_ereg_replace('^( | )+', '', $str);
$str = mb_ereg_replace('( | )+$', '', $str);
echo mb_ereg_replace(' ', "n ", $str);
?>
|
a,b,c, |
a,b,c
In SQL, the function trim() is used to remove leading and trailing spaces, ltrim() is to remove spaces on the left side of a string, and rtrim() is used to remove spaces on the right side of a string.
Example 2. Use str_replace to replace
| The code is as follows
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function mbTrim($str)
{
return mb_ereg_replace('(^( | )+|( | )+$)', '', $str);
}
| The code is as follows
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Copy code
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$str=" www.bKjia.c0m "; <🎜>
$str = mb_ereg_replace('^( | )+', '', $str); <🎜>
$str = mb_ereg_replace('( | )+$', '', $str); <🎜>
echo mb_ereg_replace(' ', "n ", $str); <🎜>
?>
http://www.bkjia.com/PHPjc/632753.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632753.htmlTechArticleThe following article summarizes several PHP program examples for removing Chinese and English spaces at the beginning and end of strings. It is useful here. Let’s take a look at regular replacement and trim series function deletion. For example...
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