CATCH - [ php中文手册 ] - 在线原生手册

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PHP code

  <?php
 
 try {
     $error  =  'Always throw this error' ;
    throw new  Exception ( $error );

     // Code following an exception is not executed.
     echo  'Never executed' ;

} catch ( Exception $e ) {
    echo  'Caught exception: ' ,   $e -> getMessage (),  "\n" ;
}

 // Continue execution
 echo  'Hello World' ;
 ?>

PHP opcodes

Function name: (null)

Compiled variables: !0=$error, !1=$e

line	#	op	ext	return	operands
7	0	ASSIGN			!0,'Always+throw+this+error'
8	1	ZEND_FETCH_CLASS		:1	'Exception'
	2	NEW		$2	:1
	3	SEND_VAR			!0
	4	DO_FCALL_BY_NAME	1
	5	ZEND_THROW	0		$2
11	6	ECHO			'Never+executed'
13	7	JMP			->15
	8	ZEND_FETCH_CLASS		:4	'Exception'
	9	ZEND_CATCH	15		$4,!1
14	10	ECHO			'Caught+exception%3A+'
	11	ZEND_INIT_METHOD_CALL			!1,'getMessage'
	12	DO_FCALL_BY_NAME	0
	13	ECHO			$6
	14	ECHO			'%0A'
18	15	ECHO			'Hello+World'
19	16	RETURN			1