How Does PHP Handle URL Encoding for Search Queries and Query Strings?

URL Encoding in PHP

When creating a search form like search.php?query=your query, it's essential to properly encode the search query. This ensures that special characters are represented correctly in the URI.

For encoding URI query values, PHP provides urlencode() and urldecode(). For other purposes, use rawurlencode() and rawurldecode().

The difference between urlencode() and rawurlencode() is their encoding scheme. urlencode() follows the "application/x-www-form-urlencoded" format, where spaces are encoded as ' '. rawurlencode(), on the other hand, uses raw Percent-Encoding, encoding spaces as ' '.

For building entire query strings, use http_build_query(). It automatically encodes key-value pairs using urlencode().

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