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@ 2018-08-27T11:36:41Z

<?php
if ( ! function_exists('subarray_element'))
{
  /**
   * Gets the sub-array containing a value of certain key present in it
   *
   * @param array $arr contains arrays with key => val pairs
   * @param string $id_key key of the subarray to filter
   * @param string $id_val value of the corresponding key
   * @return first element matching the value provided or FALSE
   * @link https://stackoverflow.com/q/13933454/6225838
   * @author CPHPython
   */
  function subarray_element($arr, $id_key, $id_val = NULL) {
    return current(array_filter(
      $arr,
      function ($subarr) use($id_key, $id_val) {
        if(array_key_exists($id_key, $subarr))
          return $subarr[$id_key] == $id_val;
      }
    ));
  }
}
  
  $list = [
    [
      'id' => '3243',
      'link' => 'fruits',
      'lev' => '1',
    ],
    [
      'id' => '6546',
      'link' => 'apple',
      'lev' => '2',
    ],
    [
      'id' => '9348',
      'link' => 'orange',
      'lev' => '2',
    ],
    [
      'id' => '9000',
      'link' => 'orange',
      'lev' => '2',
    ]
  ];
  
  echo 'Matching pair: '.var_export(subarray_element($list, 'id', 9348), TRUE).PHP_EOL.'-------'.PHP_EOL.
    'Non-matching pair: '.var_export(subarray_element($list, 'id', 42), TRUE).PHP_EOL.'-------'.PHP_EOL.
    'Duplicate pair: '.var_export(subarray_element($list, 'link', 'orange'), TRUE).PHP_EOL.'-------'.PHP_EOL;
  usort($list, function($f1, $f2){ return $f1['id'] > $f2['id']; });
  echo 'Duplicate pair after sortind by id: '.var_export(subarray_element($list, 'link', 'orange'), TRUE);

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: Matching pair: array ( 'id' => '9348', 'link' => 'orange', 'lev' => '2', ) ------- Non-matching pair: false ------- Duplicate pair: array ( 'id' => '9348', 'link' => 'orange', 'lev' => '2', ) ------- Deprecated: usort(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/XioRa on line 51 Duplicate pair after sortind by id: array ( 'id' => '9000', 'link' => 'orange', 'lev' => '2', )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 7.1.0 - 7.1.21, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33: Matching pair: array ( 'id' => '9348', 'link' => 'orange', 'lev' => '2', ) ------- Non-matching pair: false ------- Duplicate pair: array ( 'id' => '9348', 'link' => 'orange', 'lev' => '2', ) ------- Duplicate pair after sortind by id: array ( 'id' => '9000', 'link' => 'orange', 'lev' => '2', )

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