Preg_match problems
Want to see if there are "Rpt_" or "Ods_" or "dw_" in the table string, and if so, take this matching string and put it in an array, I'm doing it.
$table = "S_dw_xxdf_aw_aaas";
Preg_match ('/rpt_|ods_|dw_|/i ', $table, $arr);
Print_r ($arr);
But for what, the printed array is
(
[0] = =
)
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, the landlord's regular expression matches an empty string
Preg_match ('/rpt_
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Ods_
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Dw_/i ', $table, $arr);
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Preg_match matches the regular expression, matches only once, returns 1, otherwise 0,
Format: Preg_match ("Regular expression", "matched string", variable name that holds the result, preg_offset_capture, starting offset)
Where: Preg_offset_capture means get match index location
Start offset: Matches from the specified position
Preg_match_all--a global regular expression match that returns the total number of matches. As in the above, the difference is the match to the last.
