How to change Chinese punctuation to English punctuation in PHP

php method to change Chinese punctuation to English punctuation: 1. Replace through the "str_replace()" function; 2. Through "for (int i = 0; i < c.Length; i ){. ..}" method to replace.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

php replaces all Chinese symbols with English symbols

• Simple replacement str_replace()

• Regular replacements have a difference of 65248

Method 1: Simple replacement ( php code)

$val1=str_replace('，',',',$val1);
$val1=str_replace('（','(',$val1);
$val1=str_replace('）',')',$val1);

Method 2: Replace all characters (regular replacement)

for (int i = 0; i < c.Length; i++)
{
if (c[i]==12288)
{
c[i]= (char)32; continue;
}
if (c[i]>65280 && c[i]<65375)
c[i]=(char)(c[i]-65248);
}

1. The corresponding relationship between half-width symbols and full-width symbols is How was it?

The average difference is 65248

///全角空格为12288,半角空格为32
///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248 ///

2. Replace Chinese punctuation marks with English punctuation marks

Simple replacement (php code)

$val1=str_replace('，',',',$val1);
$val1=str_replace('（','(',$val1);
$val1=str_replace('）',')',$val1);

/// 转全角的函数(SBC case) ///
///任意字符串
/// 全角字符串 ///
///全角空格为12288,半角空格为32
///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248 ///
  
public string ToSBC(string input)
{ //半角转全角：
    char[] c=input.ToCharArray();
      for (int i = 0; i < c.Length; i++)
    {
       if (c[i]==32)
    {
    c[i]=(char)12288; continue;
  }
   if (c[i]<127) c[i]=(char)(c[i]+65248);
   }
return new string(c);
}
  
/// /// 转半角的函数(DBC case) ///
///任意字符串
/// 半角字符串 ///
///全角空格为12288，半角空格为32
///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248 ///
public string ToDBC(string input)
{
char[] c=input.ToCharArray();
for (int i = 0; i < c.Length; i++)
{
if (c[i]==12288)
{
c[i]= (char)32; continue;
}
if (c[i]>65280 && c[i]<65375)
c[i]=(char)(c[i]-65248);
}
return new string(c);
}

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