PHP str_replace array

Question

i had a problem about returning an array into a spesified string. so, this is my code that i had been try.

$setValues = array("test1", "test2", "testurl");
$change = join("','", $setValues);    
$done = str_replace("", "?", $change);

so, the $change variable will return an array something like this :

'test1', 'test2', 'testurl'

i want to change that array into something like this :

?, ?, ?

is it possible to doing this?

Uh, what? Could you please clarify what you mean? You want to replace the text with question marks? — Epodax
– Epodax, Commented Oct 7, 2015 at 7:03
i know that one, but i got a situation that not allowing me to doing that methods, it's actually a function. — Ching Ching
– Ching Ching, Commented Oct 7, 2015 at 7:05

Niranjan N Raju · Accepted Answer · 2015-10-07 07:07:33Z

7

use array_map() with callback

    $setValues = array("test1", "test2", "testurl");
    $change = array_map(function($val) { return "?"; }, $setValues);
    $change = join(",", $change); 
    echo $change;// outputs => ?,?,?

answered Oct 7, 2015 at 7:07

Niranjan N Raju

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2 Comments

Ching Ching Over a year ago

simple, and very straight forward. thanks Mr. Niranjan!

Narendrasingh Sisodia Over a year ago

You can simply do it echo implode(',',array_map(function($val){ return "?";},$setValues));

Rohit Kumar · Accepted Answer · 2015-10-07 07:09:59Z

0

This will work for you-

function myfunction($num)
{
   return '?';
}

$setValues = array("test1", "test2", "testurl");
$setValues = array_map("myfunction",$setValues);
$change = join("','", $setValues);    
$done = str_replace("", "?", $change);

edited Oct 7, 2015 at 7:09

answered Oct 7, 2015 at 7:06

Rohit Kumar

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2 Comments

Alex Andrei Over a year ago

this returns test1','test2','testurl

Ching Ching Over a year ago

this one also working, awesome method. thanks Mr. Rohit!

rdiz · Accepted Answer · 2015-10-12 09:14:20Z

0

Iterating with array_map seems way too overkill for this. You're basically trying to generate n questionmarks, given that n = count($array). So why not just:

$questionmarks = join( "," , array_fill( 0, count( $array ), "?" ) );

answered Oct 12, 2015 at 9:14

rdiz

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