property_exists
<?php
trait World {
private static $instance;
protected $tmp;
public static function World()
{
self::$instance = new static();
self::$instance->tmp = get_called_class().' '.__TRAIT__;
return self::$instance;
}
}
if ( trait_exists( 'World' ) ) {
class Hello {
use World;
public function text( $str )
{
return $this->tmp.$str;
}
}
}
echo Hello::World()->text('!!!'); // Hello World!!!
trait_exists
(PHP 5 >= 5.4.0)
trait_exists — Checks if the trait exists
Açıklama
bool trait_exists
( string
$traitname
[, bool $autoload
] )
Değiştirgeler
-
traitname -
Name of the trait to check
-
autoload -
Whether to autoload if not already loaded.
Dönen Değerler
Returns TRUE if trait exists, FALSE if not, NULL in case of an error.
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User Contributed Notes
trait_exists - [1 notes]
Lubaev.K ¶
10 hours ago