Using WordPress ‘funky_javascript_callback()’ PHP function

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The funky_javascript_callback() WordPress PHP function is a callback used to change %uXXXX to &#YYY; syntax.

Usage

$matches = ['%u1234', '%u5678', '%u9ABC'];
$result = funky_javascript_callback($matches);
print_r($result);

In this example, the $matches array contains some %uXXXX format strings. These are passed to the funky_javascript_callback() function, which transforms them to the &#YYY; syntax. The output will be an array of strings in the &#YYY; format.

Parameters

  • $matches (array) – Required. An array of matches that you want to convert from %uXXXX to &#YYY; syntax.

More information

See WordPress Developer Resources: funky_javascript_callback

This function is typically used within the WordPress environment, so please ensure that it’s used in the right context. Always check the WordPress Developer Resources for the latest information about the function’s usage and compatibility.

Examples

Basic usage

$matches = ['%u1234', '%u5678', '%u9ABC'];
$result = funky_javascript_callback($matches);
print_r($result);

This code will transform each item in the $matches array into the &#YYY; format.

Empty array

$matches = [];
$result = funky_javascript_callback($matches);
print_r($result);

In this case, an empty array is returned, as there are no elements to convert.

Mixed data types

$matches = ['%u1234', 5678, '%u9ABC'];
$result = funky_javascript_callback($matches);
print_r($result);

The function will only convert strings that match the %uXXXX format. In this case, the number 5678 is not converted.

Using with array_map

$matches = ['%u1234', '%u5678', '%u9ABC'];
$result = array_map('funky_javascript_callback', $matches);
print_r($result);

Here, array_map is used to apply funky_javascript_callback() to each element in $matches. The output will be an array of converted strings.

Dealing with non-unique values

$matches = ['%u1234', '%u1234', '%u9ABC'];
$result = funky_javascript_callback($matches);
print_r($result);

Even if there are duplicate values in the $matches array, funky_javascript_callback() will convert each one. The output will contain the converted duplicates.