What will be the value of the variable $input in the following PHP code <php $input = "Swapna<td>Lawrence</td>you are really<i>pretty</i>!"; $input = strip_tags($input,"<i></i>"); >?

LohaHridoy
  1. Swapna Lawrence you are really pretty!
  2. Swapna Lawrence you are reallypretty!
  3. Swapna Lawrence you are really pretty!
  4. Swapna Lawrence you are reallypretty!

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AhmedNazir

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Answer: Option 4

Italic tags <i></i> might be allowable, but table tags <td></td> could potentially wreak havoc on a page.

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What will be the output of the following PHP code <php function TV($string) { echo "my favourite TV show is ".$string; function b() { echo " I am here to spoil this code"; } } b(); >?

Answer: Option 2 b is undeclared if TV() is not called first.

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What will be the output of the following PHP code <php function TV($string) { echo "my favourite TV show is ".$string; function b() { echo " I am here to spoil this code"; } } function b() { echo " I am here to spoil this code"; } b(); >?

Answer: Option 1 This one works because b is declared independent of TV() also.

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What will be the output of the following PHP code <php function TV($string) { echo "my favourite TV show is ".$string; function b() { echo " I am here to spoil this code"; } } function b() { echo " I am here to spoil this code"; } b(); TV("Sherlock"); >?

Answer: Option 2 Function b is declared twice.

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What will be the output of the following PHP code <php <php echo "Hello world"; > >?

Answer: Option 4 You can not have php tags inside a php tag.

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What will be the output of the following PHP code <php define("GREETING", "PHP is a scripting language"); echo $GREETING; >?

Answer: Option 2 Constants do not need a $ before them, they are referenced by their variable names itself.

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What will be the output of the following PHP code <php define("__LINE__", "PHP is a scripting language"); echo __LINE__; >?

Answer: Option 3 __LINE__ is a magical constant that gives the current line number and cannot be used a variable/constant name.

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What will be the output of the following PHP code <php define("NEW_GOOD_NAME_CONSTANT", "I have a value"); define("OLD_BAD_NAME_CONSTANT", NEW_GOOD_NAME_CONSTANT); echo NEW_GOOD_NAME_CONSTANT; echo OLD_BAD_NAME_CONSTANT; >?

Answer: Option 2 Constants can be set as values for other constants.

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What will be the output of the following PHP code <php define("VAR_NAME","test"); ${VAR_NAME} = "value"; echo VAR_NAME; echo ${VAR_NAME}; >?

Answer: Option 3 ${VAR_NAME} creates a new variable which is not same as VAR_NAME.

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What will be the output of the following PHP code <php echo stripos("I love php, I love php too!","PHP"); >?

Answer: Option 2 The stripos() function finds the position of the first occurrence of a string inside another string.

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What will be the output of the following PHP code <php $value = 'car'; $result = filter_var($value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE); >?

Answer: Option 3 There is an undocumented filter flag for FILTER_VALIDATE_BOOLEAN. The documentation implies that it will return NULL if the value doesn’t match the allowed true/false values. However this...

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