Function: preg_match_all ()

Function: preg_match_all () ------------------------------------------------------------------------------ Perl Compatible syntax function library preg_match_all. Syntax: in function: preg_match_all ()

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Perl Compatible syntax Library





Preg_match_all
String comparison analysis.



Syntax: int preg_match_all (string pattern, string subject, array matches, int [order]);



Return value: integer



Correspondence type: data processing









Description





This function uses the pattern rule to analyze the comparison string subject as a whole. The values returned from the comparison are placed in the array parameter matches and sorted by order. The value of 'order' can be PREG_PATTERN_ORDER or PREG_SET_ORDER. If there is no order value, the system automatically uses PREG_PATTERN_ORDER to place it in the order value. The return value is the number of matching results. if there is no or an error occurs, the return value is false.









Example





Example of PREG_PATTERN_ORDER




Preg_match_all ("| <[^>] +> (.*) ] +> | U "," a test ", $ out, PREG_PATTERN_ORDER );

Print $ out [0] [0]. ",". $ out [0] [1]. "\ n ";

Print $ out [1] [0]. ",". $ out [1] [1]. "\ n"

?>



The return value is



Example:, This is a test

Example:, this is a test









Example of PREG_SET_ORDER




Preg_match_all ("| <[^>] +> (.*) ] +> | U "," a test ", $ out, PREG_SET_ORDER );

Print $ out [0] [0]. ",". $ out [0] [1]. "\ n ";

Print $ out [1] [0]. ",". $ out [1] [1]. "\ n"

?>



The return value is



Example:, Example:

This is a test, this is a test


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