How to understand the 3 lines of c code?

Question

 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|l", &flag) == FAILURE) {
  return;
 }

Especially what's ZEND_NUM_ARGS() TSRMLS_CC doing?

Moats

the short answer would be...read the documentation; see google.com/search?q=ZEND_NUM_ARGS%28%29 – Neukam

@Steven: Actually, that is C code for the PHP language. – Daybreak

That looks like C code for a PHP extension. – Holster

@Bolt I stand (sit, actually) corrected; which 10 seconds with the documentation available from google told me right after i clicked the add comment button [you guys are fast!] – Neukam

i expect this will be closed soon, since the OP has apparently expended no effort prior to posting, but i'll leave it alone...for now – Neukam

Answer 1

It looks like TSRMLS_CC is a macro that might expand to nothing or it might expand to an extra argument with a comma thrown in there:

http://blog.golemon.com/2006/06/what-heck-is-tsrmlscc-anyway.html

Childish

Answer 2

This Zend article says:

The bulk of the zend_parse_parameters() block will almost always look the same. ZEND_NUM_ARGS() provides a hint to the Zend Engine about the parameters which are to be retrieved, TSRMLS_CC is present to ensure thread safety

Reyna

Can you elaborate about TSRMLS_CC ? – Moats

Answer 3

http://docstore.mik.ua/orelly/webprog/php/ch14_07.htm

Kosey

Answer 4

see http://www.hospedajeydominios.com/mambo/documentacion-manual_php-pagina-zend_arguments_retrieval.html

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