How to Embed PHP Variables into Strings with Units?

Incorporating PHP Variables into Strings

Often, developers encounter the need to include PHP variables within strings. While this may seem straightforward, certain scenarios can present challenges.

One such scenario involves adding units, such as 'px,' to the end of a variable. When spaces are included, the variable and unit are treated as a single variable name. Similarly, combining them without spacing leads to errors.

Solution

To successfully incorporate a PHP variable with its unit into a string, one can use either of the following methods:

• Concatenation:

  $width = 100;
  $bla = '<div class="vote_pct" style="width: ' . $width . 'px;">';

• String interpolation:

  $width = 100;
  $bla = "<div class=\"vote_pct\" style=\"width: ${width}px;\">";

By utilizing these techniques, developers can effectively include PHP variables into strings, enhancing the dynamic nature of their applications.

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