quotes | 易学教程

Quotation marks in value of html tag attribute problem

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问题 <?php $myname = 'my name have quotation marks " <- here'; ?> And i try to: <input type="text" name="newnameproposition[<?php echo $myname ?>]"> And html have a little problem becouse of: name="newnameproposition[my name have quotation marks " <- here]" Can anybody had this kind of problem? 回答1: Take a look at htmlentities() 来源： https://stackoverflow.com/questions/4939193/quotation-marks-in-value-of-html-tag-attribute-problem

Making a new line with single quotes?

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问题 Can I do a line break like this '\n' ? Or do I must use double quotes - "\n" ? 回答1: You have to use double quotes. Otherwise, PHP will literally output \n . http://php.net/manual/en/language.types.string.php 回答2: To output a newline (or any other control character for that matter) you must always use double quotes. An alternative to not use double quotes is chr() with the respective ASCII code as an argument: echo chr(10); // same as echo "\n"; 回答3: just add .PHP_EOL; to the end of your line

Are single quotes escaped automatically in PHP? Then what's the need for cleaning?

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问题 I'm reading up on web security and one obvious topic to cover is SQL injections. I'm trying to set up a basic PHP page where I can execute an SQL injection (it's a local server). However, it seems my code (or server) automatically escapes single quotes. Is this a new standard or is there a setting that's activated on my server that I don't know about? Is there a need to clean input any more? Here's an example of my server side code: $foo = $_POST['foo']; $sql = "SELECT * FROM bar WHERE foo='"

MacOSX: how to disable accented characters input

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I'm using Eclipse Juno on MacOSX Lion and have an issue that drives me real mad (in Xcode and Appcode everything works ok). I often print one quote/apostrophe and move the caret. But in this Mac version of Eclipse the quote as I type is highlighted by orange marker (it seems like Mac smart quotes feature) and when I move caret - quote disappears! I tried defaults write NSGlobalDomain AutomaticQuoteSubstitutionEnabled -bool false to disable smart qotes globally, restarted the computer, but this doesn't help. Also I tried to find in Eclipse preferences something related to "quote", "smart",

Is there any difference between “string” and 'string' in Python? [duplicate]

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This question already has an answer here: Single quotes vs. double quotes in Python [closed] 19 answers In PHP, a string enclosed in "double quotes" will be parsed for variables to replace whereas a string enclosed in 'single quotes' will not. In Python, does this also apply? Milen A. Radev No : 2.4.1. String and Bytes literals ...In plain English: Both types of literals can be enclosed in matching single quotes ( ' ) or double quotes ( " ). They can also be enclosed in matching groups of three single or double quotes (these are generally referred to as triple-quoted strings). The backslash (

JavaScript HERE-doc or other large-quoting mechanism?

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Is there a convenient way to quote a large block of HTML that has both single and double quotes in JavaScript? Is there anything like a HERE-doc <<EOF , a multi-quote character """ , or custom delimiters q{} ? Any creative or inventive solutions to this problem? Some people don't like this, so be prepared for scorn and derision, but one trick is to dump your "big block of stuff" into a <script language="text"> block: <script id='blockOfStuff' language="text"> Hi this is random stuff <h1>Including HTML markup</h1> And quotes too, or as one man said, "These are quotes, but 'these' are quotes too

Properly handling spaces and quotes in bash completion

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What is the correct/best way of handling spaces and quotes in bash completion? Here’s a simple example. I have a command called words (e.g., a dictionary lookup program) that takes various words as arguments. The supported ‘words’ may actually contain spaces, and are defined in a file called words.dat : foo bar one bar two Here’s my first suggested solution: _find_words() { search="$cur" grep -- "^$search" words.dat } _words_complete() { local IFS=$'\n' COMPREPLY=() cur="${COMP_WORDS[COMP_CWORD]}" COMPREPLY=( $( compgen -W "$(_find_words)" -- "$cur" ) ) } complete -F _words_complete words

How do I remove quotes from a string?

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$string = "my text has \"double quotes\" and 'single quotes'"; How to remove all types of quotes (different languages) from $string ? str_replace('"', "", $string); str_replace("'", "", $string); I assume you mean quotation marks? Otherwise, go for some regex, this will work for html quotes for example: preg_replace("//", "", $string); C-style quotes: preg_replace("/\/\/.*?\n/", "\n", $string); CSS-style quotes: preg_replace("/\/*.*?\*\//", "", $string); bash-style quotes: preg-replace("/#.*?\n/", "\n", $string); Etc etc... 来源： https://stackoverflow.com/questions/4228282/how-do-i

What difference does ssh command quoting make?

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问题 How is it that these commands result in different output? ⋊> ssh host bash -c 'cd /tmp; pwd' /home/manu ⋊> ssh host "bash -c 'cd /tmp; pwd'" /tmp An answer to a similar question here states that: The trailing arguments are combined into a single string which is passed to as an argument to the -c option of your login shell on the remote machine. In case of an * I can understand this, but what part would be evaluated locally in this example? Also, an -- before the bash command doesn't help. 回答1

How does the leading dollar sign affect single quotes in Bash?

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I need to pass a string to a program as its argument from the Bash CLI, e.g program "don't do this" The string may include any character like '$' , '\' , etc. and I don't want Bash to do any modification. So I think about using single quotes. However the following does not work: program 'don\'t do this' //escape doesn't work in single quote While the following two works: program $'dont\'t do this' //seems fine, but any other side effects? program 'dont'\''do this' //breaking into 3 parts The first approach seems better in that it acquires less pre modification (put the dollar symbol in front