Eg:$str = "just atest & 'learn to use '"; echo html_entity_decode($str); echo "<br />"; echo html_entity_decode($str,ENT_QUOTES); echo "<br />"; echo html_entity_decode($str,ENT_NOQUOTES);
just a test & 'learn to use ' just a test & 'learn to use ' just a test & 'learn to use '
Eg:$str = "just a test & 'learn to use'"; echo htmlentities($str,ENT_COMPAT); echo "<br/>"; echo htmlentities($str, ENT_QUOTES); echo "<br/>"; echo htmlentities($str, ENT_NOQUOTES);
just a test & 'learn to use' just a test & 'learn to use' just a test & 'learn to use'
just a test & 'learn to use'<br /> just a test & 'learn to use'<br /> just a test & 'learn to use'
Eg:$str3="\ just a ' \" test"; echoaddslashes($str3);
\\ just a \' \" test
Eg:$str4="\\ just a \'\" test"; echo stripslashes($str4);
just a ' " test
预定义字符包括:& (和号) 成为& " (双引号) 成为" ' (单引号) 成为' < (小于) 成为< > (大于) 成为> Eg:$str5 = "just atest & 'learn to use'"; echo htmlspecialchars($str5, ENT_COMPAT); echo "<br/>"; echo htmlspecialchars($str5, ENT_QUOTES); echo "<br/>"; echo htmlspecialchars($str5, ENT_NOQUOTES);
just a test & 'learn to use' just a test & 'learn to use' just a test & 'learn to use'
just a test & 'learn to use'<br /> just a test & 'learn to use'<br /> just a test & 'learn to use'
Eg:$str6 = "just atest & 'learn to use'"; echo htmlspecialchars_decode($str6); echo "<br />"; echo htmlspecialchars_decode($str6, ENT_QUOTES); echo "<br />"; echo htmlspecialchars_decode($str6, ENT_NOQUOTES);
just a test & 'learn to use ' just a test & 'learn to use ' just a test & 'learn to use '
just a test & 'learn to use '<br /> just a test & 'learn to use '<br /> just a test & 'learn to use '
$str= htmlspecialchars(addslashes($str)); $str= htmlspecialchars_decode(stripslashes($str));
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