Posted in php
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6:25 am, August 31, 2018
 

remove all of an element in a string <h1>

good if you want to remove all of the instances of an element in a string like if you have a <h1> tag in your string and want to remove it you can use the following code.

$additional = "some text and a <h1>title tag</h1>";
$additional = preg_replace('/<h1[^>]*>([\s\S]*?)<\/h1[^>]*>/', '', $additional);

This will remove the following from the $additional variable.

<h1>title tag</h1>

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env()

The env() CSS function can be used to insert the value of a user agent-defined environment variable into your CSS, in a similar fashion to the var() function and custom properties. The difference is that, as well as being user-agent defined rather than user-defined, environment variables are globally scoped to a document, whereas custom properties are scoped to the element(s) on which they are declared.
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