Home
Recent Q&A
Java
Cloud
JavaScript
Python
SQL
PHP
HTML
C++
Data Science
DBMS
Devops
Hadoop
Machine Learning
Azure
Blockchain
Devops
Ask a Question
How can we determine whether a variable is set?
Home
PHP
How can we determine whether a variable is set?
asked
Jun 23, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
How can we determine whether a variable is set?
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
Please
log in
or
register
to answer this question.
1
Answer
0
votes
answered
Jun 23, 2019
by
anonymous
The boolean function isset determines if a variable is set and is not NULL.
Related questions
0
votes
Q: How can we determine whether a PHP variable is an instantiated object of a certain class?
asked
Jun 23, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can we define a variable accessible in functions of a PHP script?
asked
Jun 22, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can we check the value of a given variable is alphanumeric?
asked
Jun 22, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can we check the value of a given variable is a number?
asked
Jun 22, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
+1
vote
Q: How can we display information of a variable and readable by a human with PHP?How can we display information of a variable and readable by a human with PHP?
asked
Jun 22, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can we pass the variable through the navigation between the pages?
asked
Jun 23, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: If the variable $var1 is set to 10 and the $var2 is set to the character var1, what's the value of $$var2?
asked
Jun 23, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can you pass a variable by reference?
asked
Jun 23, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: Explain whether it is possible to share a single instance of a Memcache between multiple PHP projects?
asked
Jun 23, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How do I check if a given variable is empty?
asked
Jun 22, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can we get the error when there is a problem to upload a file?
asked
Jun 23, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can we connect to a MySQL database from a PHP script?
asked
Jun 22, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can we change the maximum size of the files to be uploaded?
asked
Jun 23, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can we automatically escape incoming data?
asked
Jun 22, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
0
votes
Q: How can we access the data sent through the URL with the POST method?
asked
Jun 22, 2019
in
PHP
by
SakshiSharma
(
32.2k
points)
#php
#php-php
#php-server-monitor-script
#php-support
#mysql-php
#php-programmer
#php-development
#php-language
...
