array search by key in php

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showing results for - "array search by key in php"
Guadalupe
24 Jan 2017
1<?php
2$search_array = array('first' => 1, 'second' => 4);
3if (array_key_exists('first', $search_array)) {
4    echo "The 'first' element is in the array";
5}
6?>
7
Kane
01 Feb 2016
1
2<?php
3$array array(0 => 'blue'1 => 'red'2 => 'green'3 => 'red');
4
5$key = array_search('green'$array); // $key = 2;
6$key = array_search('red'$array);   // $key = 1;
7?>
8
9
Aurélien
08 Oct 2018
1$arr = array(
2    "one" => 1,
3    "two" => 2,
4    "three" => 3,
5    "seventeen" => 17
6);
7function find($mot){
8  
9  global $arr; // this is global variable
10  $ok=false;
11 foreach ($arr as $k => $v) 
12    {
13      if($k==$mot){
14        return $v; $ok=true; // or return true;
15      }
16    }
17  if(ok==false){ return -1; }  // or return false;
18}
19
20//call function
21echo find("two");
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