how to debug in php
ini_set('display_errors', 'On');
error_reporting(E_ALL);how to debug in php
ini_set('display_errors', 'On');
error_reporting(E_ALL);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));php best debugging functions
<?php
$myVar = "hello world!";
var_dump($myVar);
print_r($myVar);
$allVars = get_defined_vars();
print_r($allVars);
debug_zval_dump($allVars);
function sayHello($hello) {
echo $hello;
debug_print_backtrace();
}
sayHello($myVar);
?>Best debugging tools for php
Xdebug, PHP DebugBar , MacGDBp, Kint, Whoops, Krumo, Pinba, Gubed PHP Debugger, DBG, and PHP_Dyn are some best debugging tools for php.debug php
// ------ string -------
// use echo, exit for output
$a = 123
echo ($a);
exit;
// ------ array -------
$array = array(
1 => 'apple',
2 => 'banana',
)
// Method 1
echo "<pre>";
print_r($array);
echo "</pre>";
// Method 2
echo "<pre>";
var_dump($array);
echo "</pre>";
// Method 3 (no need exit) beacause of dd is already exit
dd($array)
// Method 4 (cakephp)
pr ($array);
// ------ json -------
$json = {"a":"123"}
pr (json_encode($json));
exit;
print_r (json_encode($json));
exit;Copyright © 2021 Codeinu
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