Php curly braces function

Adding Curly Braces on Array of String PHP

Without string interpolation, literal names in Curly braces or brackets are written as string literals, thus enclosed in quotes. See also Curly braces in string in PHP for more reference material on PHP strings.

Adding Curly Braces on Array of String PHP

Im looking for the way to add curly braces <> on my Array of string :

print_r(json_encode($temp)); temp = [] 

Im creating that values with :

$query_final = (my query); $query = $this->db->query($query_final)->result_array(); $res = array_count_values(array_column($query, 'status')); array_push($temp, $res); print_r(json_encode($temp)); 

print_r(json_encode($temp)); temp = [,,] 

So far i’ve tried to use implode :

$temp = implode(",", $temp); print_r(json_encode($temp)); 

but it just giving the error, is there any way to do the right thing ?

array_count_values() returns a list of the values and the number of times they occur, so just using array_push() will add this entire array as 1 item and give you the results your getting.

Instead, you can add the results one at a time to the $temp array and get the results your after.

$temp = []; $res = array_count_values(array_column($query, 'status')); foreach ( $res as $key=>$item ) < $temp[] = [$key =>$item]; > print_r(json_encode($temp)); 

Decode your json with json_decode($temp, true);

You can use json_encode on an array to get a JSON. Like so:

$temp = ['Red' => 1, 'Blue' => 2, 'Green' => 2 ]; print_r(json_encode($temp)); //

Should I use curly brackets or concatenate variables within strings?, You should not be using option 1, use option 2 instead. Both option 3 and 4 are the same. For a simple variable, braces are optional. But if you are using array

Is it wrong to use curly braces after the dollar sign inside strings

I am trying to understand what is the difference between the two possible syntax variations in complex variable syntax. PHP allows for both variants:

$foo = 'bar'; $bar = "$bar is allowed"; //or $bar = "bar is allowed"; 

There is no error/warning/notice generated when using either syntax. I have noticed no difference between the two, however PHP manual shows only the variant.
Is it wrong to use the other variant? Would it ever cause me any problems?

$ <. >is a syntax for another purpose. It is used to indirectly reference variable names. Without string interpolation, literal names in Curly braces or brackets are written as string literals, thus enclosed in quotes. However, inside interpolation quotes are not used outside curly braces:

$bar = 'baz'; echo $bar , PHP_EOL; echo $ , PHP_EOL; $arr = ['a' => 1, 'b' => ['x' => 'The X marks the point.']]; echo $arr['a'] , PHP_EOL; // interpolation: echo "$arr[a] / " , PHP_EOL; 

Instead of literals you can use functions as well:

function foo() // Here we use the function return value as variable name. // We need braces since without them the variable `$foo` would be expected // to contain a callable echo $ , PHP_EOL; 

When interpolating, you need to enclose into curly braces only when the expression otherwise would be ambiguous:

echo "$arr[b][x]", PHP_EOL; // "Array[x]" echo "", PHP_EOL; // "The X marks the point." 

Now we understand that $ <. >is a simple interpolation «without braces» similar to «$arr[a]» since the curly braces are just for indirect varable name referencing. We can enclose this into curly braces nevertheless.

Interpolated function call forming the variable name:

echo "$ / <$>", PHP_EOL; // "baz / baz" since foo() returns 'bar' and $bar contains 'baz'. 

Again, «$» is equivalent to $ , in curly braces: «<$>» .

As asked in comments,

there is another curly brace syntax to reference array keys.

This is just an alternative syntax to PHP’s common array syntax $array[‘key’] .

In opposit to the latter, on indirect variable name references the curly braces follow immediately after the $ or the object member operator -> . To make it even more cryptic we can combine both:

which is equivalent to echo $bar[‘baz’];

Really weird in PHP’s string interpolation: «$» is valid and «$» as well but not «$array[‘key’]» , «$arrayPhp curly braces function» is valid instead, but both, «$array» and «$array» , do not work at all.

Conclusion

It should be made a habit to use braced interpolation syntax all the time. Braced array key syntax should be avoided at all.
Always use:

See also PHP documentation:

• Variable variables (also known as indirect variable name referencing)
• Accessing array elements

Both square brackets and curly braces can be used interchangeably for accessing array elements (e.g. $array[42] and $array will both do the same thing in the example above).

It seems PHP is able to expand either format to reference the correct value in almost all cases.

The only difference I can find is when accessing object properties, eg

$foo = (object) ['a' => 'bar']; echo "a>bar"; // barbar echo "$a>bar"; // Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR) 

So with that in mind, I would avoid using $ <. >.

See also Curly braces in string in PHP for more reference material on PHP strings.

Curly braces in string in PHP, As for me, curly braces serve as a substitution for concatenation, they are quicker to type and code looks cleaner

How do you insert a php function inside of curly brackets and double quotes?

In PHP you can of course insert variables inside of a string (double quoted string). Cool trick. You can also insert array references and object references inside of a string using brackets for protection. Also cool. eg:

echo "my car is $car and my house is and my boat is name>"; 

How do I insert functions into the array using a similar slick shorthand method? I tried this but it does not work.

Granted, I know that I can of course display the function by using the period to concat the strings, but am curious to know if there is an obscure shorthand method for doing this? Repeatedly stopping and starting strings with periods and quotes is annoying! sprintf() is closer to what I want, but still more clunky than preferred. I thought the curly brackets might be key. but do they only accept variables? If so, is there a way to represent a function (like mktime()) as a variable (without creating a dummy class)?

$mktime = mktime(); echo "the unix time is "; 

Also you can concatenate with dots :

echo "the unix time is " . time(); 

Strict Standards: mktime(): You should be using the time() function instead

Array and string offset access syntax with curly braces is deprecated, 1 Answer 1 · 1. Do you happen to know when the $string syntax was introduced in PHP? · 20. Ah, technically it was to be deprecated in PHP

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Php curly braces

Solution 3: I don’t know why you use so many php tags, but that’s why it doesn’t work! try this: Solution: In your example tells WordPress to use the image defined in as the thumbnail for those posts in the ‘starter content’. Solution 3: This alternative syntax is in no way different than the, perhaps, more familiar syntax.

Php curly braces

Curly braces in string in PHP, As for me, curly braces serve as a substitution for concatenation, they are quicker to type and code looks cleaner. Remember to use double quotes (» «) as their content is parsed by PHP, because in single quotes (‘ ‘) you’ll get the literal name of variable provided: Code sample»;echo «This is «;Feedback

Curly braces or colon-endif statements in PHP — which one provides better performance and code compatibility?

Most of the time the alternative (endif) syntax is used in view scripts. It’s often hard to see/notice the end of an if statement since a curly brace only takes up one character, when you’re at the bottom of a file, it’s hard to tell if it’s the end of an if or a foreach. For example:

They are both exactly equivalent. Consult your organization’s style guide to determine which you should use.

This alternative syntax is in no way different than the, perhaps, more familiar syntax. Just don’t mix the two. Similar syntax exists for while , for , foreach , and switch .

Typically you should choose your preferred syntax based upon readability, and your teams preference.

What really might throw you is when you begin to see «if statements» which misuse logical conjunction operators like the following:

isset( $value ) AND print( $value ); 

What are curly brackets in php Code Example, convert php to brackets. php work in brackets. convert array to string with brackets php. php curly brackets around variable. curly brackets php after string usage. extract text within curly brackets php. php when use -> and when brackets. php function to find a text inside curly brackets in a string.

Loop with curly brackets causes wrong output

Based on the output, my guess is that:

Looks like a bug in the interpreter? See comments by Rizier123:

1. Not a bug: stackoverflow.com/q/29284075/3933332
2. The brackets after the foreach()/ Do nothing here /; is just a statement-group: php.net/manual/en/control-structures.intro.php

Anyways, the code looks atrocious with the way you have written it. Please opt for cleaner code.

Reading through the comments under the question I think Jon Stirling explain this symptom the best:

Just guessing, but perhaps the ?> in the first example is actually being taken as the statement end (loops can be used without braces). At that point, the loop has happened and $element is the last value. Then the braces are just take as a code block which you echo, which is 5.

Over using is your problem.

You are completing the foreach context before outputting the result and not doing that in the second.

Look at your examples carefully and you should see what you are doing differently.

I don’t know why you use so many php tags, but that’s why it doesn’t work! try this:

Curly Braces Notation in PHP, Curly braces are used to denote string or variable interpolation in PHP. It allows you to create ‘variable functions’, which can allow you to call a function without explicitly knowing what it actually is. Using this, you can create a property on an object almost like you would an array:

Double Curly Brackets in Php

In your example > tells WordPress to use the image defined in [‘attachments’][‘image-about’] as the thumbnail for those posts in the ‘starter content’. This functionality is specific to the «Starter Content» feature added in WordPress 4.7, which is described here, and not a PHP language feature.

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Curly braces in string in PHP

This is the complex (curly) syntax for string interpolation. From the manual:

Complex (curly) syntax

This isn’t called complex because the syntax is complex, but because it allows for the use of complex expressions.

Any scalar variable, array element or object property with a string representation can be included via this syntax. Simply write the expression the same way as it would appear outside the string, and then wrap it in < and >. Since < can not be escaped, this syntax will only be recognised when the $ immediately follows the < . Use

 echo "This is < $great>"; // Works, outputs: This is fantastic echo "This is "; echo "This is $"; // Works echo "This square is width>00 centimeters broad."; // Works, quoted keys only work using the curly brace syntax echo "This works: "; // Works echo "This works: "; // This is wrong for the same reason as $foo[bar] is wrong outside a string. // In other words, it will still work, but only because PHP first looks for a // constant named foo; an error of level E_NOTICE (undefined constant) will be // thrown. echo "This is wrong: "; // Works. When using multi-dimensional arrays, always use braces around arrays // when inside of strings echo "This works: "; // Works. echo "This works: " . $arr['foo'][3]; echo "This works too: values[3]->name>"; echo "This is the value of the var named $name: >"; echo "This is the value of the var named by the return value of getName(): >"; echo "This is the value of the var named by the return value of \$object->getName(): getName()>>"; // Won't work, outputs: This is the return value of getName(): echo "This is the return value of getName(): "; ?> 

Often, this syntax is unnecessary. For example, this:

$a = 'abcd'; $out = "$a $a"; // "abcd abcd"; 

behaves exactly the same as this:

So the curly braces are unnecessary. But this:

will, depending on your error level, either not work or produce an error because there’s no variable named $aefgh , so you need to do:

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