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首頁(yè) 後端開發(fā) php教程 如何轉(zhuǎn)義 PHP 字串中的引號(hào)以避免解析錯(cuò)誤?

如何轉(zhuǎn)義 PHP 字串中的引號(hào)以避免解析錯(cuò)誤?

Dec 23, 2024 am 06:03 AM

How Can I Escape Quotation Marks in PHP Strings to Avoid Parse Errors?

在 PHP 中轉(zhuǎn)義引號(hào)

遇到與引號(hào)相關(guān)的解析錯(cuò)誤可能會(huì)令人沮喪。為了解決這個(gè)問題,讓我們探索不同的方法來(lái)一致地處理字串。

例如,您提到面臨以下行的問題:

$text1 = 'From time to "time" this submerged or latent theater in 'Hamlet'
           becomes almost overt. It is close to the surface in Hamlet's pretense of madness,
           the "antic disposition" he puts on to protect himself and prevent his antagonists
           from plucking out the heart of his mystery. It is even closer to the surface when
           Hamlet enters his mother's room and holds up, side by side, the pictures of the
           two kings, Old Hamlet and Claudius, and proceeds to describe for her the true
           nature of the choice she has made, presenting truth by means of a show.
           Similarly, when he leaps into the open grave at Ophelia's funeral, ranting in
           high heroic terms, he is acting out for Laertes, and perhaps for himself as well,
           the folly of excessive, melodramatic expressions of grief.";

發(fā)生此錯(cuò)誤是因?yàn)橐?hào)中的引號(hào)該字串使解釋器感到困惑。要解決此問題,您可以使用反斜線 () 轉(zhuǎn)義引號(hào)。透過這樣做,PHP 會(huì)將包含的文字識(shí)別為單一字串,而不解釋引號(hào)。

$text1 = 'From time to \"time\" this submerged or latent theater in 'Hamlet'
...

或者,您可以對(duì)字串使用單引號(hào),因?yàn)镻HP 不區(qū)分單引號(hào)和雙引號(hào)對(duì)於字串文字:

$text1 = 'From time to "time"';

要考慮的另一個(gè)選項(xiàng)是使用定界符,它是一種使用“

$heredoc = <<<term
This is a long line of text that include variables such as $someVar
and additionally some other variable $someOtherVar. It also supports having
'single quotes' and "double quotes" without terminating the string itself.
heredocs have additional functionality that most likely falls outside
the scope of what you aim to accomplish.
term;

透過實(shí)作這些技術(shù),您可以避免引號(hào)引起的解析錯(cuò)誤,並確保您的字串在您的 PHP 腳本中正確解釋。

以上是如何轉(zhuǎn)義 PHP 字串中的引號(hào)以避免解析錯(cuò)誤?的詳細(xì)內(nèi)容。更多資訊請(qǐng)關(guān)注PHP中文網(wǎng)其他相關(guān)文章!

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