How to convert Chinese symbols to English letters in php

Method: 1. Use the "str_replace()" function, the syntax format is "str_replace('Chinese symbol', 'English symbol', string)"; 2. Use regular replacement, when the character length is greater than 65280 , when it is less than 65375, just subtract 65248 from the character length.

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

Simple replacement of str_replace()

The difference between regular replacements is 65248

Method one: simple replacement (php code)

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

Method two: all character replacement (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. What is the corresponding relationship between half-width symbols and full-width symbols?

The 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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