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Dokumen ini menggunakan Manual laman web PHP Cina Lepaskan
(PECL wincache >= 1.1.0)
wincache_ucache_exists — Checks if a variable exists in the user cache
$key
)
Checks if a variable with the key
exists in the user cache or not.
key
The key
that was used to store the variable in the cache.
key
is case sensitive.
Returns TRUE
if variable with the key
exitsts,
otherwise returns FALSE
.
Example #1 Using wincache_ucache_exists()
<?php
if (! wincache_ucache_exists ( 'green' ))
wincache_ucache_set ( 'green' , 1 );
var_dump ( wincache_ucache_exists ( 'green' ));
?>
以上例程会输出:
bool(true)