WordPress Transit semantic HTML and filter links related PHP functions using analytic _php tips

Esc_html () (Escape HTML)
the esc_html () function is used to escape HTML code so that the HTML code is not escaped.

Usage

Esc_html ($text);

Parameters

$text

(string) (must) the string to be escaped.

Default value: None

return value

(string) returns the escaped character.

Example

echo esc_html (' <a href= "http://www.example.com/" >a link</a> ");

The code above will output:

WordPress function: esc_html () (Escape HTML)

(To prevent the browser from turning the code, I cut a picture directly)

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This function is located at: wp-includes/formatting.php

Esc_url () (Filter link)
Many URLs will have small errors, with the Esc_url () function to mask or fix these errors, and to reject unsecured protocols.

What the Esc_url () function does:

Default reject is not the url:defaulting to HTTP, HTTPS, FTP, FTPS, mailto, news, IRC, gopher, NNTP, feed, and telnet of the following protocol
Delete invalid characters and dangerous characters
Convert characters to HTML entity characters
How to use

Esc_url ($url, $protocols, $_context);

Parameters

$url

(string) (must be) the URL to be filtered.

Default value: None

$protocols

(array) (optional) An array of protocols that can receive the protocol, if not set, the default is: Defaulting to HTTP, HTTPS, FTP, FTPS, mailto, news, IRC, gopher, NNTP, feeds, and Telnet.

Default value: None

$_context

(optionally) How to return the URL.

Default value: (String) display

return value

(string) returns the filtered link.

Example

<?php echo esc_url (' www.endskin.com ');//output: http://www.endskin.com?>

More

This function is located at: wp-includes/formatting.php