PHP iconv function parameter differences

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Case1

$valueiconv("UTF-8","GBK//TRANSLIT",$value);

Results:

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Case2

$valueiconv("UTF-8","GBK//IGNORE",$value);

Results:

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Case3

$valueiconv("UTF-8","GBK",$value);

Results:

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Case4

mb_convert_encoding($value,"GBK","UTF-8");

Results:

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Analysis

iconv ( string $in_charset , string $out_charset , string $str )

• If you add a string//translit after Out_charset, the transliteration (transliteration) feature is enabled. This means that when a character cannot be represented by the target character set, it can be approximated by one or more similar characters.
• If you add a string//ignore, characters that cannot be expressed in the target character set are silently discarded.
• If no string is added after the out_charset, it is truncated starting with the first unrecognized character and generates a e_notice. So the content behind is discarded.

PHP iconv function parameter differences