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  2. PHP syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/PHP_syntax_and_semantics

    As in C, variables may be cast to a specific type by prefixing the type in parentheses. PHP treats newlines as whitespace, in the manner of a free-form language. The concatenation operator is . (dot). Array elements are accessed and set with square brackets in both associative arrays and indexed arrays.

  3. Here document - Wikipedia

    en.wikipedia.org/wiki/Here_document

    LANG = C tr a-z A-Z <<- END_TEXT Here doc with <<-A single space character (i.e. 0x20 ) is at the beginning of this line This line begins with a single TAB character i.e 0x09 as does the next line END_TEXT echo The intended end was before this line echo and these were not processed by tr echo +++++ LANG = C tr a-z A-Z << END_TEXT Here doc with ...

  4. String interpolation - Wikipedia

    en.wikipedia.org/wiki/String_interpolation

    In computer programming, string interpolation (or variable interpolation, variable substitution, or variable expansion) is the process of evaluating a string literal containing one or more placeholders, yielding a result in which the placeholders are replaced with their corresponding values.

  5. JavaScript syntax - Wikipedia

    en.wikipedia.org/wiki/JavaScript_syntax

    Declaring a variable (with the keyword var) in the global scope (i.e. outside of any function body (or block in the case of let/const)), assigning a never declared identifier or adding a property to the global object (usually window) will also create a new global variable. Note that JavaScript's strict mode forbids the assignment of an ...

  6. PHP - Wikipedia

    en.wikipedia.org/wiki/PHP

    PHP 5 introduced type declarations that allow functions to force their parameters to be objects of a specific class, arrays, interfaces or callback functions. However, before PHP 7, type declarations could not be used with scalar types such as integers or strings. [71] Below is an example of how PHP variables are declared and initialized.

  7. Brace notation - Wikipedia

    en.wikipedia.org/wiki/Brace_notation

    PHP strings can grow very large and can use all available memory, if a large enough string occurs. Usually, if that's the case, it may be better to split() a string into an array for finer control. Usually, if that's the case, it may be better to split() a string into an array for finer control.

  8. Dynamic HTML - Wikipedia

    en.wikipedia.org/wiki/Dynamic_HTML

    By contrast, a dynamic web page is a broader concept, covering any web page generated differently for each user, load occurrence, or specific variable values. This includes pages created by client-side scripting and ones created by server-side scripting (such as PHP , Python , JSP or ASP.NET ) where the web server generates content before ...

  9. eval - Wikipedia

    en.wikipedia.org/wiki/Eval

    In PowerShell, the Invoke-Expression Cmdlet serves the same purpose as the eval function in programming languages like JavaScript, PHP and Python. The Cmdlet runs any PowerShell expression that is provided as a command parameter in the form of a string and outputs the result of the specified expression.