Question

我的案文是:

$text =  abc def abc ghi abc jkl ;
$search =  abc ;
$regex =  / .trim($search). /ism ;
if(preg_match_all($regex, $text, $tmp)) {
   $array_key = $tmp[0];
   foreach($array_key as $ak) {
       echo $ak[1];
   }
}

如果是b,我希望结果是abc,如何确定。

abc def abc ghi abc jkl

Answer 1

if(preg_match_all($regex, $text, $tmp)) {
   $array_key = $tmp[0];
   echo $array_key[1];
}

Answer 2

<代码> 在座椅上?

。

Answer 3

Well,$tmp,在您的名册上将拥有一系列的所有领域。然后,这些阵列将包含这些领域的所有价值观。

您的代码是:$ak = $[0][$x] = “abc”,在您通过纳克/代码>时,您的职等比实际阵列高出1,并得abc” = “b”。

我想你希望<代码>echo$ak;。

Answer 4

I am trying to discuss within your code. I hope its will help

<?php
$text =  abc def abc ghi abc jkl ;
$search =  abc ;
$regex =  / .trim($search). /ism ;
if(preg_match_all($regex, $text, $tmp)) 
{
  $array_key = $tmp[0];

  /*Test using print_r($tmp); 
    then you will find result: Array( [0] => Array ( [0] => abc [1] => abc [2] =>      
     abc) ) 
   If you want to test/print first array value then echo $array_key[0]; result is: abc
   Similarly for $array_key[1] or $array_key[2] result is abc
   That means your array contains 3 same value
   */

   foreach($array_key as $ak) 
   {
    /*If you use echo $ak[1]; then it will print b because in foreach loop $ak value   
    is:  abc 
    You can t print only abc in foreach loop. To print abc you don t need to use   
    foreach loop. Just use echo $array_key[0]; 
   */ 
   }
  }
  ?>

  Maybe your expected code is:
  <?php
    $text =  abc def abc ghi abc jkl ;
    $search =  abc ;
    $regex =  / .trim($search). /ism ;
    if(preg_match_all($regex, $text, $tmp)) 
    {
     $array_key = $tmp[0];
     echo $array_key[0];
    }
   ?>
  Output: abc

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