


Solution to intercepting Chinese garbled characters in PHP_PHP tutorial
If the ASCii code is greater than 0xa0, it is half a Chinese character; understand substr(), mb_substr(), ord(). The commonly used encoding formats now are UTF8, GBK, GBK2312, and BIG5. GBK is an upgrade of GBK2312. Now what I encounter in development are basically UTF8, and GBK is commonly used on forum BBS. Today I wrote UTF8 by myself, and it worked fine in the test. After all, the ones copied from the Internet can be used, but if you have time, it is best to write them yourself, so that only what you get is yours.
The easiest way is to use
Example 1
The code is as follows | Copy code | ||||
|
代码如下 | 复制代码 |
if(function_exists(‘mb_string’)) |
/**
*————————————————————————————————————————代码如下 | 复制代码 |
/**
|
The code is as follows | Copy code |
if(function_exists(‘mb_string’)) { mb_substr($string,$start,$length,$encoding); //other codes here } else mysubstr($string,$start,$length);//Call your own function ?> |
The code is as follows | Copy code |
/** *————————————- *First define your own function: *————————————-*/ function mysubstr($string, $start, $length) { if(strlen($string)>$length) { $str=”; $len=$start+$length; for($i=$start;$i { if(ord(substr($string,$i,1))>0xa0) { $str.=substr($string,$i,2); $i++; } else{ $str.=substr($string,$i,1);} } return $str.’…’; } else{ return $string;} } |
There is another issue to note. When using this method, the charset in your
tag pair can only be set to Chinese encoding, such as GBK, GB2312.The following is a commonly used Chinese and English character interception function
Customizing the Chinese string interception function is basically to write a function modeled after mb_substr and call it directly. The code I found below is actually very simple
The code is as follows
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Copy code | ||||
{
/* Function:
* This algorithm is used to intercept Chinese strings
* The function intercepts in units of a single complete character, that is, one English character and one Chinese character both represent one unit length
* Parameters:
* The parameter $string is the string to be intercepted,
* The parameter $start is the starting position to be intercepted,
* The parameter $length is the number of characters to be intercepted (one Chinese character or English character counts as one)
* Return value:
* Returns the intercepted result string
* */
$str_input=$string_input;
$len=$length;
$return_str="";
//Define empty string
for ($i=0;$i $return_str=$return_str." ";
$start_index=0;
//Calculate starting byte offset
for ($i=0;$i {
If (ord($str_input{$start_index}>=161)) //It is Chinese $start_index+=2;
$start_index+=1;
}
$chr_index=$start_index;
//Interception
for ($i=0;$i {
$asc=ord($str_input{$chr_index});
If ($asc>=161)
$return_str{$i}=chr($asc);
$return_str{$i+1}=chr(ord($str_input{$chr_index+1}));
$len+=1; //Add 1 to the end condition
$chr_index+=2;
continue; else
$return_str{$i}=chr($asc);
$chr_index+=1;
}
Return trim($return_str);
}//end of substr_cn
?>

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PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

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