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What are the potential pitfalls of using substr() function in PHP to break down a string?

Using the substr() function in PHP to break down a string can lead to potential pitfalls if the start or length parameters are not carefully handled....

What common mistake can lead to retrieving all database records in a PHP query?

The common mistake that can lead to retrieving all database records in a PHP query is not specifying a proper condition or filter in the WHERE clause...

What potential issues can arise when trying to limit the output of a file lister script in PHP?

One potential issue that can arise when trying to limit the output of a file lister script in PHP is that the script may not accurately display the de...

What is the difference between array_filter() and array_map() in PHP?

The main difference between array_filter() and array_map() in PHP is that array_filter() is used to filter elements of an array based on a specified c...

What are the advantages and disadvantages of using the exec() and passthru() functions in PHP for executing external commands?

When executing external commands in PHP, the exec() and passthru() functions are commonly used. The exec() function is used to execute a command and r...