What is the difference between String and string in php? [duplicate] - php

This question already has answers here:
PHP & Case Sensitivity [duplicate]
(3 answers)
Closed 1 year ago.
Is there a difference ?
I don't get it.
Or maybe a string is a class and
String is a reference to the System.string?
like in c#


string in php is not an object, which mean, you can't use method like equals or other that can be use in java.
string in php is a type as well as float, int ...

Related

add INT with STRING in PHP [duplicate]

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Getting a number when it has certain prefix from a block of text in PHP
(3 answers)
Zero-pad digits in string
(5 answers)
Closed 1 year ago.
I am trying to add the int with strings in PHP but I could get a helpful answer on StackOverflow and other website communities.
I want the code separate the ALPHABETS and NUMBER and then add the value in NUMBER and again JOIN the ALPHABETS AND ADDED NUMBER together.
How I achieve this, Please help.
Example:
$mynumber = 'SBI0001';
$addValue = '1';
It will be 'SBI0002' in PHP.

Can a query string parameter key contain the hyphen (-) char? [duplicate]

This question already has answers here:
Can hyphens be used in query string values?
(2 answers)
Closed 1 year ago.
Hello to everyone who might read this question.
The question is very basic, can a query string parameter key contain the hiphen (-) char?
I have this url
https://www.example.com/page?uid=83485743jfj4f37gj348&thank-you
Thank you all.

Judging from
https://url.spec.whatwg.org/#application-x-www-form-urlencoded-percent-encode-set
you can use the hypen character without any escaping.

Convert string expression in operation in php [duplicate]

This question already has answers here:
calculate math expression from a string using eval
(10 answers)
Closed 4 years ago.
If i've a string like this
((((((4,50*0,86)*52500*1,0016)+3800)/52500)*2,2046)*1,05)
how can i do the operation for obtaning the total result?
Thank You

Maybe your question is a possible duplicate from calculate-math-expression-from-a-string-using-eval
However
if you need to store this in a variable you can do
$string='((((((4,50*0,86)*52500*1,0016)+3800)/52500)*2,2046)*1,05)';
$response=eval('return '.str_replace(',','.',$string.';'));
print($response);
the output is:
9.14027512736

Extract multidemensional array string [duplicate]

This question already has an answer here:
How to extract and access data from JSON with PHP?
(1 answer)
Closed 6 years ago.
I have multidimensional array string stored in PHP variable and I want to extract the keys and its values. Below is the given string which need to be split.
[{"cutoffTime":"1","refundInPercentage":"50"},
{"cutoffTime":‌​"3","refundInPercent‌​age":"70"},
{"cutoffT‌​ime":"6","refundInPe‌​rcentage":"90"}
]
How can I extract this?

Try this to have your work done
json_decode($string)

Generate a variables length placement holder string for paramaterized queries in python [duplicate]

This question already has answers here:
python list in sql query as parameter [duplicate]
(16 answers)
Closed 8 years ago.
I'd like to build a query string with a variable length in where clause.
In PHP I might do this like
<?php
$vars=array('john','mike','matt');
$placeHolders=array_fill(0,sizeof($vars),'%s');
$whereClause=" name in (".join(',',$placeHolders).")";
Is there a concise Python translation of this in python

I think I'd use this to create the variable strings:
', '.join('%s' for _ in vars)
That eliminates the need to substring the result and gets you as many placeholders as you have values.

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