PHP Manual
SPL 函数
Return the integer object handle for given object

spl_object_id

(PHP 7 >= 7.2.0)

spl_object_id — Return the integer object handle for given object

说明

spl_object_id ( object $obj ) : int

This function returns a unique identifier for the object. The object id is unique for the lifetime of the object. Once the object is destroyed, its id may be reused for other objects. This behavior is similar to spl_object_hash().

参数

object: Any object.

返回值

An integer identifier that is unique for each currently existing object and is always the same for each object.

范例

Example #1 A spl_object_id() example

 <?php
$id = spl_object_id($object);
$storage[$id] = $object;
?>

注释

Note:

When an object is destroyed, its id may be reused for other objects.

php spl 函数 return the traits used by the given class php com 函数 returns a handle to an already running instance of a com object php cubrid mysql 兼容性函数 return a string with the flags of the given field offset php cubrid mysql 兼容性函数 return the type of the column corresponding to the given field offset php informix 函数 return the content of a blob object php informix 函数 return the content of the char object php mailparse 函数 returns a handle on a given section in a mimemessage php maxdb 函数 frees stored result memory for the given statement handle php snmp 函数 return all values that are enums with their enum value instead of the raw integer php snmp 函数 return all objects including their respective object id within the specified one php snmp 函数 fetch the snmp object which follows the given object id php spl 函数 return the integer object handle for given object php sqlite 函数 executes a query against a given database and returns a result handle php stream 函数 return a bucket object from the brigade for operating on php mnogosearch 函数 return crc32 checksum of given string php sdo das xml 函数 to create sdo das xml object for a given schema file php sdo das xml 函数 returns sdo das xml document object for a given path to xml instance document php sdo 函数 return the name of the type for a data object php sdo 函数 return the namespace uri of the type for a data object php swish 函数 execute a query and return results object