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I want to know use of esc_attr()? how it is used? Any example would be highly help!

esc_attr( $variable )
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esc_attr() is written specifically for escaping a string that is to be used as an html attribute, which means also escaping single and double-quote characters etc.

In general, it's better to use the data validation API that WP provides rather than the generic PHP functions.

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    sure, it works now! thanks for the concept clearance! – Nimesh Mar 28 '18 at 17:37

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