note 91663 modified in function.array-search by danbrown
| From: | danbrown@php.net | Date: | Mon, 22 Jun 2009 12:42:18 +0000 |
| Subject: | note 91663 modified in function.array-search by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-157219@lists.php.net to get a copy of this message | ||
Here is a cool trick:
<?php
function arr_search ( $array, $expression ) {
$result = array();
$expression = preg_replace ( "/([^\s]+?)(=|<|>|!)/",
"\$a['$1']$2", $expression );
foreach ( $array as $a ) if ( eval ( "return $expression;" ) ) $result[] = $a;
return $result;
}
$data = array (
array ( "name" => "bill", "age" => 40 ),
array ( "name" => "john", "age" => 30 ),
array ( "name" => "jack", "age" => 50 ),
array ( "name" => "john", "age" => 25 )
);
print_r ( arr_search ( $data, "age>=30" ) );
print_r ( arr_search ( $data, "name=='john'" ) );
print_r ( arr_search ( $data, "age>25 and name=='john'" ) );
?>
-- results --
Array
(
[0] => Array
(
[name] => bill
[age] => 40
)
[1] => Array
(
[name] => john
[age] => 30
)
[2] => Array
(
[name] => jack
[age] => 50
)
)
Array
(
[0] => Array
(
[name] => john
[age] => 30
)
[1] => Array
(
[name] => john
[age] => 25
)
)
Array
(
[0] => Array
(
[name] => john
[age] => 30
)
)
--was--
Here is a cool trick:
function arr_search ( $array, $expression ) {
$result = array();
$expression = preg_replace ( "/([^\s]+?)(=|<|>|!)/",
"\$a['$1']$2", $expression );
foreach ( $array as $a ) if ( eval ( "return $expression;" ) ) $result[] = $a;
return $result;
}
$data = array (
array ( "name" => "bill", "age" => 40 ),
array ( "name" => "john", "age" => 30 ),
array ( "name" => "jack", "age" => 50 ),
array ( "name" => "john", "age" => 25 )
);
print_r ( arr_search ( $data, "age>=30" ) );
print_r ( arr_search ( $data, "name=='john'" ) );
print_r ( arr_search ( $data, "age>25 and name=='john'" ) );
-- results --
Array
(
[0] => Array
(
[name] => bill
[age] => 40
)
[1] => Array
(
[name] => john
[age] => 30
)
[2] => Array
(
[name] => jack
[age] => 50
)
)
Array
(
[0] => Array
(
[name] => john
[age] => 30
)
[1] => Array
(
[name] => john
[age] => 25
)
)
Array
(
[0] => Array
(
[name] => john
[age] => 30
)
)
http://php.net/manual/en/function.array-search.php