preg_replace('REGEX',$arr[$1],$str); using matchvalue as array key

[celebx]

Hi!

I was wondering if it is possible to use the preg_replace match return value ($1-9) as the key of the array containing the replacement string.

Let me know if anyone knows a solution.

Best Regards,
Snt

[celebx]

found it:
jlyman at oregontech dot net
18-Nov-2003 11:29
I had some text with numbers that I wanted to use as array references in the replacement text- here's how it worked for me:

$string="My name is [0]";
$names=array("Bill","Bob","Joe");

$string = preg_replace("/[(\d+)]/",$names[(int) ${1}],$string);

echo $string;

output should be "My name is Bill"...

Took me just a bit of playing around to figure this out (newbie), so I thought I would post it here.

[celebx]

it still doesn't work.. this is my code:

				$search = array (		'/\{OPTIONS_OBJ_(\d*)\}/Ui',
								'/\{OPTIONS_TEXT_(\d*)\}/Ui',
		'/\{OPTIONS_POINTS_(\d*)\}/Ui',
		'/\{MENU_OBJ\}/Ui',
		'/\{MENU\}/Ui',
		'/\{QUESTION_NO\}/Ui',
		'/\{QUESTION_TEXT\}/Ui',
		'/\{TEST_ID\}/Ui',
		'/\{TEST_NAME\}/Ui',
		'/\{TEST_DESCRIPTION\}/Ui',
		'/\{TEST_STATUS\}/Ui',
		'/\{TEST_FILENAME\}/Ui'
			);
								$replace = array ( 		$options["obj"][(int) ${1}],
						$options["text"][(int) ${1}],
	$options["points"][(int) ${1}],
	$options["menu_objname"],
	$options["menu"],
	$qn,
	$question["title"],
	$test_data["id"],
	$test_data["title"],
	$test_data["description"],
	$test_data["status"],
	$test_data["filename"]
	);
								$question_html .= preg_replace($search,$replace,$question["design"]);

It seems the (int) ${1} reference doesn't work in search/replace arrays.

[celebx]

Found it:

function option_data($matches) {
	global $options;
	$arr_data = split("_",$matches[1]);
	foreach ($arr_data as $key => $key_data) {
		$eval_data .='["'.strtolower($key_data).'"]';
	}
	eval('$return_value = $options'.$eval_data.';');
	if ($return_value) { 
		return $return_value; 
	} else { 
		return $matches[0]; 
	}
}

preg_replace_callback('/{(.*)}/Ui',"option_data",$question["design"]);