mysql - Split text under few conditions (PHP) -


i have form input field 'text' , want create different query depending on value put in field user

  1. if there phrase - search each word (f.e. 'hello world'):

    select (...) x '%hello%' , x '%world%' etc...

  2. if phrase in quotation marks - search whole phrase (f.e. '"hello world"'):

    select (...) x '%hello world%'

and that's cool - can that.

but problem starts when have mix above functionality - f.e. if phrase 'hello world "my name is" john' - should search this:

select (...)  x '%hello%'      , x '%world%'      , x '%my name is%'      , x '%john%'

how implement such functionality , manage in php?

you use preg_match_all(...):

$text = 'lorem ipsum "dolor sit amet" consectetur "adipiscing \\"elit" dolor'; preg_match_all('/"(?:\\\\.|[^\\\\"])*"|\s+/', $text, $matches); print_r($matches);

which produce:

array (     [0] => array         (             [0] => lorem             [1] => ipsum             [2] => "dolor sit amet"             [3] => consectetur             [4] => "adipiscing \"elit"             [5] => dolor         )  )

and can see, accounts escaped quotes inside quoted strings.

a short explanation:

"           # match character '"' (?:         # start non-capture group 1    \\        #   match character '\'   .         #   match character except line breaks   |         #   or   [^\\"]    #   match character except '\' , '"' )*          # end non-capture group 1 , repeat 0 or more times "           # match character '"' |           # or \s+         # match non-whitespace character: [^\s] , repeat 1 or more times

and in case of matching %22 instead of double quotes, you'd do:

preg_match_all('/%22(?:\\\\.|(?!%22).)*%22|\s+/', $text, $matches);

you can check this also


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