Php best debugging functions

I find it very useful to print out to the browsers console instead of just var_dumping:

function console_log( $data ){
  echo '<script>';
  echo 'console.log('. json_encode( $data ) .')';
  echo '</script>';
}

Usage:
$myvar = array(1,2,3);
console_log( $myvar ); // [1,2,3]

Source: php.net

Php best debugging functions

I am using two ways to debug code

one is print the data and die the function in specific point.
 
     print_r($data);die;

second one is writing log file in specific point in code.

function write_log($log_msg)
{
    $log_filename = "logs";
    if (!file_exists($log_filename)) 
    {
        mkdir($log_filename, 0777, true);
    }
    $log_file_data = $log_filename.'/debug.log';
  file_put_contents($log_file_data, $log_msg . "\n", FILE_APPEND);
    
} 

write_log("Writing Log");
$a = array(
        array('id' => '1','date' => '09-04-2018','length' => '10'),
        array('id' => '2','date' => '09-04-2018','length' => '20'),
        array('id' => '1','date' => '10-04-2018','length' => '11')
    );
write_log(print_r($a,1));

Source: php.net

Php best debugging functions

A good example of data output to the console via <script> tags, I myself used this first, but he broke the captcha job, because <script> tags were inserted into the base64 code of the captcha picture. Then I began to display logs in the headers with such a function (it may help someone else, in a similar situation):

<?php

function header_log($data){
  $bt = debug_backtrace();
  $caller = array_shift($bt);
  $line = $caller['line'];
  $file = array_pop(explode('/', $caller['file']));
  header('log_'.$file.'_'.$caller['line'].': '.json_encode($data));
}

?>

Usage:
$myvar = array(1,2,3);
header_log( $myvar ); // in headers we see: log_filename_rownumber: [1,2,3]

Source: php.net

Similar codes

0 vote233 views1 answer
Allow json uploads in Wordpress
PHP
0 vote233 views1 answer
How do i implement blockchain payments on laravel website
PHP
2 votes254 views2 answers
How to add property to an object in php
PHP
0 vote258 views2 answers
Get wordpress page link by id
PHP
1 vote242 views1 answer
Add pagination to wordpress
PHP
3 votes229 views2 answers
In arrray php
PHP
100 votes333 views6 answers
Php substr_replace
PHP
6 votes228 views3 answers
Laravel bootstrap auth scaffolding
PHP
0 vote246 views1 answer
Drupal 7 hook_form_alter
PHP
0 vote229 views1 answer
How to import Yomo in larave;
PHP