Upgrade & Secure Your Future with DevOps, SRE, DevSecOps, MLOps!

We spend hours on Instagram and YouTube and waste money on coffee and fast food, but won’t spend 30 minutes a day learning skills to boost our careers.
Master in DevOps, SRE, DevSecOps & MLOps!

Learn from Guru Rajesh Kumar and double your salary in just one year.


Get Started Now!

How to check variable is declared or not in Laravel to avoid an Error.

Suppose we have not declared a variable in the controller and calling it in views, then it shows undefined variable Error. See the below image.

Suppose, we are calling $string variable and we have not declared the variable in the controller so it gives an error like above shown.
To avoid this error we use @isset function. See the below image for code.

as we have not declared the string so it returns Variable is not found. See the below image.

Certification Courses

DevOpsSchool has introduced a series of professional certification courses designed to enhance your skills and expertise in cutting-edge technologies and methodologies. Whether you are aiming to excel in development, security, or operations, these certifications provide a comprehensive learning experience. Explore the following programs:

DevOps Certification, SRE Certification, and DevSecOps Certification by DevOpsSchool

Explore our DevOps Certification, SRE Certification, and DevSecOps Certification programs at DevOpsSchool. Gain the expertise needed to excel in your career with hands-on training and globally recognized certifications.