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PHP has hundreds of base functions and thousands more from extensions. Prior to PHP version 5.3.0, functions are not first-class functions and can only be referenced by their name, whereas PHP 5.3.0 introduces closures. [35] User-defined functions can be created at any time and without being prototyped. [35]
It allows external document generators like phpDocumentor, which is the de facto standard implementation, [1] to generate documentation of APIs and helps some IDEs such as Zend Studio, NetBeans, JetBrains PhpStorm, ActiveState Komodo Edit and IDE, PHPEdit and Aptana Studio to interpret variable types and other ambiguities in the loosely typed ...
If the first word of the text is too long, no text will fit to complete the left-hand side, so beware creating a "ragged left margin" when not enough space remains for text to fit alongside floating tables. If multiple single-image tables are stacked, they float to align across the page, depending on page width.
The very short final line of a paragraph composed of a single word (highlighted blue) is a runt. The first line of a paragraph beginning at the end of a page (highlighted green) is called an orphan (sometimes called a widow). The last line of a paragraph continuing on to a new page (highlighted yellow) is a widow (sometimes called an orphan).
If you use this tag to put a formula in the line with text, put it in the {} template. The {{ math }} template uses HTML , and will size-match a serif font, and will also prevent line-wrap. All templates are sensitive to the = sign, so remember to replace = with {{ = }} in template input, or start the input with 1= .
Used for spacing between lines of text, usually as in printed pages, allowing e.g. room for an editor's copy editing notations. A height of 2 is single spacing between lines:
PHP has three types of comment syntax: /* */ marks block and inline comments; // or # are used for one-line comments. [219] The echo statement is one of several facilities PHP provides to output text. [citation needed] In terms of keywords and language syntax, PHP is similar to C-style syntax.
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 ...