why the variable $ replaced changed to array in a function ?
foreach ($rowset as $row)
{
$replaced = str_replace('$uid',$this->bbcode_uid,$row['first_pass_replace']);
echo $replaced; // this is a test of the variable error and it's ok
$this->bbcodes[$row['bbcode_tag']] = array(
'bbcode_id' => (int) $row['bbcode_id'],
'regexp' => array($row['first_pass_match'] => function($replaced){
return $replaced; //this is not working
}
)
);
}
I honestly have no idea what you are trying to accomplish but to make it "work" you need:
...
'regexp' => array(
$row['first_pass_match'] => function() use($replaced) {
return $replaced;
}
)
...
You use use() to achieve closure and bring an external variable into the function without explicitly passing it in as a parameter.
Related
Is there any way of putting variables into an array? I'm not really sure how else to explain it.
I'm developing a website that works with a game server.
The game exports a file which contains variables such as:
$RL_PlayerScore_CurrentTrail_14911 = "lasergold";
$RL_PlayerScore_HasTrail_14911_LaserGold = 1;
$RL_PlayerScore_Money_14911 = 2148;
I'd like to convert these into an array like
$data = array(
'CurrentTrail_14911' => 'lasergold'
'HasTrail_14911_LaserGold' => '1'
'Money_14911' => '2184'
);
Is there any way I could do this?
Thanks in advance
Include file in scope and then get array of defined vars, excluding globals you don't need.
include('name-of-your-file.php');
$data = get_defined_vars();
$data = array_diff_key($data, array(
'GLOBALS' => 1,
'_FILES' => 1,
'_COOKIE' => 1,
'_POST' => 1,
'_GET' => 1,
'_SERVER' => 1,
'_ENV' => 1,
'ignore' => 1 )
);
You can return an array with all your declared variables, and loop through them cutting off the desired piece of text. You could do something like this:
<?php
//echo your generated file here;
$generatedVars = get_defined_vars();
$convertedArray = array();
foreach($generatedVars as $key=>$var)
{
$key = str_replace("RL_PlayerScore_","",$key);
$convertedArray[$key] = $var;
}
If all game variables are going to begin with 'RL_PlayerScore_', you could use something like that :
$vars = [];
foreach($GLOBALS as $var => $value) {
if(strpos($var, 'RL_PlayerScore_') === 0) {
$vars[$var] = $value;
}
}
$vars will be filled by all your variables.
See #Dagon comment also.
How do I recursively get value from array where I need to explode a key?
I know, it's not good the question, let me explain.
I got an array
[
"abc" => "def",
"hij" => [
"klm" => "nop",
"qrs" => [
"tuv" => "wxy"
]
]
]
So, inside a function, I pass:
function xget($section) {
return $this->yarray["hij"][$section];
}
But when I want to get tuv value with this function, I want to make section as array, example:
To get hij.klm value (nop), I would do xget('klm'), but to get hij.klm.qrs.tuv, I can't do xget(['qrs', 'tuv']), because PHP consider $section as key, and does not recursively explode it. There's any way to do it without using some ifs and $section[$i] ?
function xget($section) {
return $this->yarray["hij"][$section];
}
that one is static function right?
you can do that also for this
function xget($section) {
if(isset($this->yarray["hij"][$section])){
return $this->yarray["hij"][$section];
}elseif(isset($this->yarray["hij"]["klm"]["qrs"][$section])){
return $this->yarray["hij"]["klm"]["qrs"][$section];
}
}
as long as the key name between two of them are not the same.
You could use array_walk_recursive to find tuv's value regardless of the nested structure:
$tuv_val='';
function find_tuv($k,$v)
{
global $tuv_val;
if ($k=='tuv')
$tuv_val=$v;
}
array_walk_recursive($this->yarray,"find_tuv");
echo "the value of 'tuv' is $tuv_val";
try my code
<?php
$array = array(
'aaa' => 'zxc',
'bbb' => 'asd',
'ccc' => array(
'ddd' => 'qwe',
'eee' => 'tyu',
'fff' => array(
'ggg' => 'uio',
'hhh' => 'hjk',
'iii' => 'bnm',
),
),
);
$find = '';
function xget($key){
$GLOBALS['find'] = $key;
$find = $key;
array_walk_recursive($GLOBALS['array'],'walkingRecursive');
}
function walkingRecursive($value, $key)
{
if ($key==$GLOBALS['find']){
echo $value;
}
}
xget('ggg');
?>
I have an array that values are dynamically obtained from a function(or supposed to be), you may see example below. But looks like it doesn't work as expected. Is this usage wrong ?
$products = array(
"saloon" => array(
array(
"id" => "23544",
"precise" => "unkown",
"pump" => "auto",
"density" => "5:3",
"name" => "Multi dose arranger",
"color" => "224,0,92",
"desc" => "....",
"cdate" => "12342315",
"support" => "#lab"
)// Goes like this.
)
),
"basic" => array(
//Goes on and on
),
"variable" => array(
)
);
array(
2=> array(
getProduct(16,"everyday"),
getProduct(24,"everyday")
),
3=> array(
getProduct(16,"everyday"),
getProduct(23,"everyday")
),
4=> array(
getProduct(16,"everyday"),
getProduct(24,"everyday")
)
);
function getProduct($id,$cat){
GLOBAL $products,$a;
// echo $a;
// print_r(is_array($products));
foreach ($products[$cat] as $product) {
if($product["id"]==$id){
$selectedProduct = $product;
break;
}
}
return $selectedProduct;
}
function is like above but setts nothing, also printing array is also return empty.
Change your function for that:
function getProduct($id,$cat){
global $products,$a;
foreach ($products[$cat] as $product) {
if($product["id"]==$id){
$selectedProduct = $product;
break; //Instead of exit
}
}
return $selectedProduct;
}
Don't use exit because you want to break the execution of the foreach, not exit the program, use break instead.
EDIT: Corrected what the exit function does, thanks to #deceze
What you do wrong is using exit inside your function (it stops the whole script execution). You should change your function into:
function getProduct($id,$cat){
global $products,$a;
// echo $a;
// print_r(is_array($products));
foreach ($products[$cat] as $product) {
if($product["id"]==$id){
return $product;
}
}
return false;
}
In fact you don't need exit or break because you can simple return $product when you find it. You should also return value in case you don't find any product. In above example false is returned in that case.
I am having trouble figuring out a way to simply parse a string input and find the correct location within a multidimensional array.
I am hoping for one or two lines to do this, as the solutions I have seen rely on long (10-20 line) loops.
Given the following code (note that the nesting could, in theory, be of any arbitrary depth):
function get($string)
{
$vars = array(
'one' => array(
'one-one' => "hello",
'one-two' => "goodbye"
),
'two' => array(
'two-one' => "foo",
'two-two' => "bar"
)
);
return $vars[$string]; //this syntax isn't required, just here to give an idea
}
get("two['two-two']"); //desired output: "bar". Actual output: null
Is there a simple use of built-in functions or something else easy that would recreate my desired output?
Considering $vars being your variables you would like to get one['one-one'] or two['two-two']['more'] from (Demo):
$vars = function($str) use ($vars)
{
$c = function($v, $w) {return $w ? $v[$w] : $v;};
return array_reduce(preg_split('~\[\'|\'\]~', $str), $c, $vars);
};
echo $vars("one['one-one']"); # hello
echo $vars("two['two-two']['more']"); # tea-time!
This is lexing the string into key tokens and then traverse the $vars array on the keyed values while the $vars array has been turned into a function.
Older Stuff:
Overload the array with a function that just eval's:
$vars = array(
'one' => array(
'one-one' => "hello",
'one-two' => "goodbye"
),
'two' => array(
'two-one' => "foo",
'two-two' => "bar"
)
);
$vars = function($str) use ($vars)
{
return eval('return $vars'.$str.';');
};
echo $vars("['one']['one-two']"); # goodbye
If you're not a fan of eval, change the implementation:
$vars = function($str) use ($vars)
{
$r = preg_match_all('~\[\'([a-z-]+)\']~', $str, $keys);
$var = $vars;
foreach($keys[1] as $key)
$var = $var[$key];
return $var;
};
echo $vars("['one']['one-two']"); # goodbye
How about
$vars = array(
'one' => array(
'one-one' => "hello",
'one-two' => "goodbye"
),
'two' => array(
'two-one' => "foo",
'two-two' => "bar"
)
);
function get( $string, $vars )
{
$keys = explode( '][', substr( $string, 1, -1 ) );
foreach( $keys as $key ) {
$vars = $vars[$key];
}
return $vars;
}
echo get( '[two][two-one]', $vars );
For one, you've not got a $var in your get() function. $var was defined outside the function, and PHP scoping rules do not make "higher" vars visible in lower scopes unless explictly made global in the lower scope:
function get($string) {
global $vars;
eval('$x = $vars' . $string);
return $x;
}
get("['two']['two-two']");
might work, but this isn't tested, and using eval is almost always a very bad idea.
Kohana has a nice Config class which alows something like this:
echo Config::get("two.two-two");
You can check it out here: http://kohanaframework.org/3.1/guide/api/Config
Say I have an array of key/value pairs in PHP:
array( 'foo' => 'bar', 'baz' => 'qux' );
What's the simplest way to transform this to an array that looks like the following?
array( 'foo=bar', 'baz=qux' );
i.e.
array( 0 => 'foo=bar', 1 => 'baz=qux');
In perl, I'd do something like
map { "$_=$hash{$_}" } keys %hash
Is there something like this in the panoply of array functions in PHP? Nothing I looked at seemed like a convenient solution.
Another option for this problem: On PHP 5.3+ you can use array_map() with a closure (you can do this with PHP prior 5.2, but the code will get quite messy!).
"Oh, but on array_map()you only get the value!".
Yeah, that's right, but we can map more than one array! :)
$arr = array( 'foo' => 'bar', 'baz' => 'qux' );
$result = array_map(function($k, $v){
return "$k=$v";
}, array_keys($arr), array_values($arr));
function parameterize_array($array) {
$out = array();
foreach($array as $key => $value)
$out[] = "$key=$value";
return $out;
}
A "curious" way to do it =P
// using '::' as a temporary separator, could be anything provided
// it doesn't exist elsewhere in the array
$test = split( '::', urldecode( http_build_query( $test, '', '::' ) ) );
chaos' answer is nice and straightfoward. For a more general sense though, you might have missed the array_map() function which is what you alluded to with your map { "$_=$hash{$_}" } keys %hash example.