'option' parameter has the same syntax as 'option' parameter from 'mb_regex_set_options' function.
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
mb_ereg_match — Regular expression match for multibyte string
$pattern
, string $string
[, string $option = "msr"
] )A regular expression match for a multibyte string
Returns TRUE if
string matches the regular expression
pattern, FALSE if not.
Note:
The internal encoding or the character encoding specified by mb_regex_encoding() will be used as the character encoding for this function.
'option' parameter has the same syntax as 'option' parameter from 'mb_regex_set_options' function.
Note that this function matches a string from the beginning only (though not necessarily till the end):
<?php
$test = mb_ereg_match("a", "some apples"); // returns false
$test = mb_ereg_match("a", "a kiwi"); // returns true
?>
If you want to check for a match anywhere in the string, use the wild-card & repeat operators .*
<?php
$test = mb_ereg_match(".*a", "some apples"); // returns true
?>
The behaviour of mb_ereg_match to imply a ^ at the beginning of the pattern stands in stark contrast to the behaviour of mb_ereg where ^ is NOT implied.
Switching between those two routines (because the need to extract a subpattern changes) requires careful consideration when to compensate for this surprising inconsistence.