array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'function.is-real.php', 1 => 'is_real', 2 => '别名 is_float', ), 'up' => array ( 0 => 'ref.var.php', 1 => '变量处理函数', ), 'prev' => array ( 0 => 'function.is-object.php', 1 => 'is_object', ), 'next' => array ( 0 => 'function.is-resource.php', 1 => 'is_resource', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'zh', 'path' => 'reference/var/functions/is-real.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

is_real

(PHP 4, PHP 5, PHP 7, PHP 8)

is_real — 别名 is_float()

说明

此函数是该函数的别名： is_float().

警告

该别名已在 PHP 7.4.0 中废弃，并且自 PHP 8.0.0 起已被移除。