Question

PHP中如何把utf-8编码转成iso-8859-1编码？

Answer 1

请使用函数iconv， 或者mb_convert_encoding 具体用法见手册，如果这2个不行，请使用下面函数：function conv_utf8_iso8859_7($s) {
$len = strlen($s);
$out = "";
$curr_char = "";
for($i=0; $i < $len; $i++) {
$curr_char .= $s[$i];
if( ( ord($s[$i]) & (128+64) ) == 128) {
//character end found
if ( strlen($curr_char) == 2) {
// 2-byte character check for it is greek one and convert
if (ord($curr_char[0])==205) $out .= chr( ord($curr_char[1])+16 );
else if (ord($curr_char[0])==206) $out .= chr( ord($curr_char[1])+48 );
else if (ord($curr_char[0])==207) $out .= chr( ord($curr_char[1])+112 );
else ; // non greek 2-byte character, discard character
} else ;// n-byte character, n>2, discard character
$curr_char = "";
} else if (ord($s[$i]) < 128) {
// character is one byte (ascii)
$out .= $curr_char;
$curr_char = "";
}
}
return $out;
}
调用：echo conv_utf8_iso8859_7('tenx')

Answer 2

iconv，楼上正解

Answer 3

iconv("utf-8","iso-8859-1",$data)