(PECL memcached >= 0.1.0)
Memcached::prepend — Prepend data to an existing item
public Memcached::prepend ( string $key , string $value ) : bool
Memcached::prepend() prepends the given value
string to the value of an existing item. The reason that value
is forced to be a string is that prepending mixed types is not well-defined.
Note:
If the
Memcached::OPT_COMPRESSION
is enabled, the operation will fail and a warning will be issued, because prepending compressed data to a value that is potentially already compressed is not possible.
key
The key of the item to prepend the data to.
value
The string to prepend.
Returns true
on success or false
on failure. The Memcached::getResultCode() will return Memcached::RES_NOTSTORED
if the key does not exist.
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https://www.php.net/manual/en/memcached.prepend.php