Quotes in a php var -

i quite new in php. have store img tag in var. think ok:

$fototag1 = "<img src='42.png' alt='text alt'>"; 

but problem comes if there single quote in name of photo or in alt?. intance, don't

what have tried:

$fototag1 = "<img src='don't.svg' alt='don't>'"; echo htmlspecialchars ($fototag1); echo addslashes($fototag1);  $fototag2 = "<img src='don\'t.svg' alt='don\'t'>"; echo $fototag2; 

(this simplified example url , alt comes sql database , of course, cannot change text manually. need general solution)

$fototag1 = "<img src='don't.svg' alt='don't>'"; 

your problem here has nothing php.

you have html attribute value delimited apostrophe characters , want use apostrophe inside value.

when want represent character special meaning in html raw character, can use character reference.

this can named entity (') or 1 of numeric references position of character in unicode (');

<img src='don&apos;t.svg' alt='don&#39;t'> 

beware: ' added html relatively late. old versions of ie not support it.

---

alternatively change html use double quotes delimit data:

<img src="don't.svg" alt="don't"> 

this introduce php problem because using them delimit string literal.

in case need escape data php, backslash character.

$fototag1 = "<img src=\"don't.svg\" alt=\"don't\">"; 

---

alternatively, use other form of string generation, such heredoc.

$fototag1 = <<<end <img src="don't.svg" alt="don't"> end; 

---

as rule of thumb, better avoid storing html in variables in first place.

when want output data, switch output mode:

?> <img src="don't.svg" alt="don't"> <?php 

you can drop php mode if need variable.

$src = "don't.svg"; $alt = "don't"; ?> <img src="<?php echo htmlspecialchars($src); ?>" alt="<?php echo htmlspecialchars($alt); ?>"> <?php 

(note characters involved, htmlspecialchars isn't needed in example, protect when dealing programmatically acquired data can't guarantee html safe).