Debugging settings and techniques for PHP

README.md

Debugging PHP

PHP Info

phpinfo();
phpinfo(INFO_MODULES);

Locate php.ini

php -i | grep "Loaded Configuration File" or php --ini

Locate PHP

which php

List Extensions

php -m

Locate extensions directory

php -ini|grep extension_dir

SMTP/Mail

• Enabling sendmail on localhost for MAMP

PHP 7

• PHP 7 Compatibility Checker

SOAP

Do not cache SOAP WSDL:

ini_set("soap.wsdl_cache_enabled", "0");

Xdebug

• Related Gist: https://gist.github.com/hofmannsven/9976152

PHPDBG

bash

php -i

php -v

php -m

bash_profile

export MAMP_PHP=/Applications/MAMP/bin/php/php5.6.10/bin
export PATH="$MAMP_PHP:$PATH"

debug.php

<?php

// output value
echo $variable; 

// output array
print_r($array); // wrap with <pre> for nice formatting

// output type
echo gettype($variable);

// output type and value
var_dump($variable); 

// output vars
print_r(get_defined_vars());

// output backtrace, type and value
function initialize($hello) {
  echo $hello . '<br />';
  var_dump(debug_backtrace());
}
initialize('Hello World!');

// output all hooks
add_action('all', 'hack_all_hooks');
function hack_all_hooks() {
  var_dump( current_filter() );
};

errors.php

<?php

// display errors
ini_set('display_errors', 'On');
error_reporting(E_ALL);

functions.php

<?php

function dump($value) {
  echo '<pre>';
  var_dump($value);
  echo '</pre>';
}

log.php

<?php

if(!function_exists('_log')){
  function _log( $message ) {
    if( WP_DEBUG === true ){
      if( is_array( $message ) || is_object( $message ) ){
        error_log( print_r( $message, true ) );
      } else {
        error_log( $message );
      }
    }
  }
}

php.ini

display_errors = On
error_reporting = E_ALL