property_existstrait_exists
(No version information available, might only be in SVN)
trait_exists — Checks if the trait exists
说明
bool trait_exists
( string
$traitname
[, bool $autoload
] )
参数
-
traitname -
Name of the trait to check
-
autoload -
Whether to autoload if not already loaded.
返回值
Returns TRUE if trait exists, FALSE if not, NULL in case of an error.
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trait_exists
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