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小白请教大佬,js函数转成php代码。
- function utf16to8(str) {
- var out, i, len, c;
-
- out = "";
- len = str.length;
- for(i = 0; i < len; i++) {
- c = str.charCodeAt(i);
- if ((c >= 0x0001) && (c <= 0x007F)) {
- out += str.charAt(i);
- } else if (c > 0x07FF) {
- out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
- out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
- out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
- } else {
- out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
- out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
- }
- }
- return out;
- }
- var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
- function base64encode(str) {
- var out, i, len;
- var c1, c2, c3;
-
- len = str.length;
- i = 0;
- out = "";
- while(i < len) {
- c1 = str.charCodeAt(i++) & 0xff;
- if(i == len)
- {
- out += base64EncodeChars.charAt(c1 >> 2);
- out += base64EncodeChars.charAt((c1 & 0x3) << 4);
- out += "==";
- break;
- }
- c2 = str.charCodeAt(i++);
- if(i == len)
- {
- out += base64EncodeChars.charAt(c1 >> 2);
- out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
- out += base64EncodeChars.charAt((c2 & 0xF) << 2);
- out += "=";
- break;
- }
- c3 = str.charCodeAt(i++);
- out += base64EncodeChars.charAt(c1 >> 2);
- out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
- out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));
- out += base64EncodeChars.charAt(c3 & 0x3F);
- }
- return out;
- }
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