Difficulty in choosing the function Correct Strings

[juvenalb]

I'm having an exercise to work out and I'm having some trouble.

This is the statement of the problem:

Again print the names of the students by order of enrollment, but only those whose initial letter is different from “T”.

That's my code.

$nomes = array('andre' => 1 , 'paulo' =>5, 'fabio' => 2,'tiago' => 4);
asort($nomes);
foreach ($nomes as $key => $value) {
  echo 

I read the PHP manual and checked the various functions for string. I tried some of them like count_chars(), str_word_countwithout success. Someone can give me a hand and explain if possible where I'm making the mistake and what would be the right function.

[Avante]

To each interaction of your foreach loop the variable ♪ receive the value of your array index and the variable $value received the value contained. Then you need to check the first letter of each word provided as an index of your array, so we use the variable ♪ and function strcasecmp native to php, which makes the comparison of strings without differentiating capital letters or minusculas.

<?php
      $ord_nomes = array();
      $nomes     = array('andre' => 1 , 'paulo' =>5, 'fabio' => 2,'tiago' => 
      asort($nomes);
      foreach ($nomes as $key => $value){  
        if(strcasecmp($key[0],"t") != 0){
           echo  "O valor é: ".$value." e o índice é ".$key."<br/>";
        }
      }
?>

If ♪ receives the value of the index which is the name, then $key[0] contains the first letter of the word. Cients of this, we assign to the second parameter of the function the letter T and make comparison. If $key[0] is different from the letter T We printed the student's name, otherwise we ignored the impression.