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2025-04-05 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >
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Editor to share with you how php determines whether a variable is a string or not, I believe most people do not know much about it, so share this article for your reference. I hope you will gain a lot after reading this article. Let's learn about it together.
In php, you can use the is_string () function to determine whether a variable is a string, the syntax "is_string ($var)"; if the specified variable is a string, it returns TRUE, otherwise it returns FALSE.
Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer
The is_string () function is used to detect whether a variable is a string. Syntax format:
Bool is_string (mixed $var)
Parameter description:
Var: the variable to be detected.
PHP version requirements: PHP 4, PHP 5, PHP 7
Return value: returns TRUE if the specified variable is a string, FALSE otherwise.
Example: the is_string () function determines whether a variable is a string
Output result:
The above is all the content of the article "how to determine whether a variable is a string or not by php". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!
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