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WP Log in Browser

Allows you to log data from your PHP WordPress code to your browser's console. Annoyed you can't var_dump from an AJAX handler? Not anymore

I'm working on a nice admin screen to config auto-logging of some common things (like wp_query in pre_get_posts and wp), and some other goodies.

To log things manually, you can use:

browser()->log  ( $var, $label );
browser()->warn ( $var, $label );
browser()->info ( $var, $label );
browser()->error( $var, $label );

Also, commandas are chainable:

browser()->log( 'This is a log...' )->error( '...and this is an error' );

For example, to log all your main query's query_vars:

add_filter( 'pre_get_posts', 'log_wp_query', 10000 );

function log_wp_query( $query ) {
    if ( $query->is_main_query() )
        browser()->log( $query->query_vars, 'pre_get_posts' );

    return $query;
}

Filters

wplinb-match-wp-debug: Set to true to only log when wp_debug is true. To prevent logging when wp_debug is false:

add_filter( 'wplinb-match-wp-debug', '__return_true' );

wplinb-enabled: To disable logging completely. It takes precedence over wplinb-match-wp-debug. To disable logging:

add_filter( 'wplinb-enabled', '__return_false' );

Profiling

The plugin includes a really simple function to allow you to track execution time of different parts of your code.

browser()->timer( $key, $log = false );

The first time you call this function with a given $key (string) it will start a timer, and return false. You can start as many timers as you want, using different $key values. You can ignore the second parameter for this first call.

The second time you call this function with a given $key, it will return the ellapsed time in seconds since you started this $key timer. If you set the second parameter to true, it will also log this value to the browser.

Example 1: Sequential use, log manually.

browser()->timer( 'Mega loop' );
for ( $i = 0; $i < 1000000; $i++ ) {
    //do something
}
$time = browser()->timer( 'Mega loop' );
browser()->log( $time, 'The mega loop took:' );

Example 2: Start and end in different places, log automatically.

add_action( 'posts_selection', 'start_timer', 100 );
add_filter( 'the_posts', 'end_timer', 1, 2 );

function start_timer( $query ) {
    browser()->timer( 'Main query time' );
}

function end_timer( $posts, $query ) {
    browser()->timer( 'Main query time', true );
    return $posts;
}

This is not a good way of measuring how much time a query takes to run, it's just to illustrate how to use the timer.

In exactly the same way, you can use the function

Browser()->memory( $key, $log = false );

to measure delta of memory consumption from your first call and your second call with the same $key.

Example:

Browser()->memory( 'testing' );
$test = array();
for ( $i = 0; $i < 100; $i++ ) {
    $test[$i] = md5( rand( 1, $i ) );
}
Browser()->memory( 'testing', true );

Browser()->memory( 'testing' );
$test = array();
for ( $i = 0; $i < 10000; $i++ ) {
    $test[$i] = md5( rand( 1, $i ) );
}
Browser()->memory( 'testing', true );

Requires: 3.4 or higher
Compatible up to: 3.5.2
Last Updated: 2012-12-17
Downloads: 389

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