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Description

Determines whether a PHP ini value is changeable at runtime.

Usage

$bool = wp_is_ini_value_changeable( $setting );

Parameters

$setting

( string ) required – The name of the ini setting to check.

Returns

bool True if the value is changeable at runtime. False otherwise.

Source

File name: wordpress/wp-includes/load.php
Lines:

function wp_is_ini_value_changeable( $setting ) {
  static $ini_all;

  if ( ! isset( $ini_all ) ) {
    $ini_all = false;
    // Sometimes `ini_get_all()` is disabled via the `disable_functions` option for "security purposes".
    if ( function_exists( 'ini_get_all' ) ) {
      $ini_all = ini_get_all();
    }
  }

  // Bit operator to workaround https://bugs.php.net/bug.php?id=44936 which changes access level to 63 in PHP 5.2.6 - 5.2.17.
  if ( isset( $ini_all[ $setting ]['access'] ) && ( INI_ALL === ( $ini_all[ $setting ]['access'] & 7 ) || INI_USER === ( $ini_all[ $setting ]['access'] & 7 ) ) ) {
    return true;
  }

  // If we were unable to retrieve the details, fail gracefully to assume it's changeable.
  if ( ! is_array( $ini_all ) ) {
    return true;
  }

  return false;
}
 

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