[Array keys are Zero]

try

if (($data=file("phone.csv", FILE_IGNORE_NEW_LINES))!== FALSE) {

//while (($data=fgetcsv($open))!==FALSE) {


		foreach ($data as  $key =>$numbr){

/// working code logic


echo $key."<br>"; 

		}

}

[Explode an string by some characters]

or

<?php
$string = "this, that;some.word;second";
$separators = array(":", ";", ",", "-", '\.');//must escape dot
$result = preg_split('/('.implode('|',$separators).')\s*/',$string);
print_r($result);
?>

[Compare Arrays]

you need functions array_intersect() and array_diff() for this job

 

[Missing decimal when totaling from XML]

try to explicite convert value to float type

change line

$tltsave = $invoiceline->total

to

$tltsave = (float)$invoiceline->total

[help getting parameters correctly from url]

try

<?php
$a='sasa + sasa';
echo '<a href="?data='. urlencode($a).'">click me</a>'."<br />\n";
if (isset ($_GET)) echo $_GET['data'];
?>

script just generate link with + and space, and echo result

[help getting parameters correctly from url]

use urlencode() function on variable before put it in link and urldecode() on $_GET variable

[Wrong regex ?]

are you sure about spaces

try to use this pattern

'~<a\s+href="solre.php?[^"]"\s*class=\'nav\'\s*>~'

[Due to math in query there is an error]

the variable $thing isn't set before you use it in query

[Selecting members who's birthday is in the next month]

what if you run your code in december?

[Binary tree - ischild function not working .]

you can binary tree put in array in this way

1. root node put on index 1 in array

2. lchild of node with index n put in array element with indeks 2*n

3. rchild of node with index n put in array element with indeks 2*n+1

 

parent element of element with index n is in position (int)(n/2)

 

level of element with index n is log(n, 2) (root element is level 0)

 

on n-th level is elements with index from pow(2, n) to pow(2, n+1)-1

 

here is code for put tree in array

 <?php
function tree_gather($node)   //Function to calculate count
  {
    $tree = array(1 => $node);
    b_tree($node, 1, &$tree);
    return $tree;
  } 
  function b_tree($node, $index, &$tree){
      $sql = "SELECT lchild,rchild FROM tree WHERE parent = '$node'";
      $execsql = mysql_query($sql);
      if($array = mysql_fetch_array($execsql)){
          if(!empty($array['lchild'])){
              $tree[$index * 2] = $array['lchild'];
              b_tree($array['lchild'], $index * 2, &$tree);
          }
          if(!empty($array['rchild'])){
              $tree[$index * 2 + 1] = $array['rchild'];
              b_tree($array['rchild'], $index * 2 + 1, &$tree);
          }
      }
  }
  ?>

the code is not tested

[Help. Arrays. Don´t know how to solve...]

change

$laprov=$_POST["$provincias"];

to

$laprov=$_POST["provincias"];

[Help. Arrays. Don´t know how to solve...]

change

while($i <= $cuenta){

to

while($i < $cuenta){

and some in 2n while loop

[How to check a string for words in an array]

<?php
$array=array('word1', 'word2', 'word3');
$string="This is a sentence containing word2";
if(preg_match('/\b'.  implode('\b|\b', $array).'\b/i', $string)) echo 'yes'; else echo 'no';
?>

[Random Pagination]

you can use "... ORDER BY RAND($seed) ..." where $seed is random number generated for pagination

 

see http://dev.mysql.com/doc/refman/5.0/en/mathematical-functions.html#function_rand

[which formula do i use?]

$formula = $production_per_hour / 3600 * $difference + $current_number;

[Only use preg_replace in between quotations...]

try

<?php
$test = 'I am 13 as of today, what an unlucky number. "B1D3AY"';
function remove_numbers($a){
return preg_replace('/\d/','', $a[0]);
}
echo preg_replace_callback('/"[^"]+"/','remove_numbers',$test);
?>

[How to get accented characters identified as wordy characters(?)]

[^\w\ŝ\ĉ\ĝ\ĵ\ŭ\ĥ\Ŝ\Ĉ\Ĝ\Ĵ\Ŭ\Ĥ]

[Can a $_POST[$variable] use a variable in the argument position?]

or just

$temp = $_SESSION['Num_Part'];
//$count = 0;
//while ($count <= $temp){
  $temp3=$_POST['Participant_P'];
  $temp5=$_POST['Result_P'];
//  $count++;
//}

 

[PHP search and replace problem]

try

<?php
$test = '<td>
    <b><font size="+2" color="#FF0000">Neighboorhood:</font> 
       <font size="+2" color="#0000FF">Greenacre</font></b>
  </td> ';
$out = preg_replace('/(Neighboorhood:.*?<font.*?)>/s', '\1 what you want to insert>', $test);
echo $out;
?>

[Desplaying something if a value is found in an array?]

use in_array() function

[Protecting Input fields from illegal characters.]

$bio = preg_replace('#[^A-Za-z 0-9\']#i', '', $_POST['bio']);

[Update table, but maintain a maximum value]

UPDATE points SET members_point=IF(members_point+1000 > 5000, 5000, members_point+1000)....... 

[Quering a Query?]

look some pagination tutorials like http://www.phpfreaks.com/tutorial/basic-pagination

[Web Fetch + Remove $ + Multiply Variable]

it echo 37.91 for me

[Sorting through multiple arrays...i think?]

try to do all job witk SQL

<?php
$r2 = mysql_query("SELECT MAX(progrm_id) AS level FROM user_program WHERE ID='".$usrid."' AND user_status='Active'");
$buffer_r2 = mysql_fetch_assoc($r2);
$level_id = $buffer_r2['level'];
$levels = array(1 => "Professional", "Gold", "Diamond", "Platinum", "Elite");
$level_name = $levels[$level_id];
?>