Detailed explanation of PHP SQlite function library_PHP tutorial
PHP SQlite database is familiar to PHP programmers with considerable experience, but it is not easy to fully master the application of related functions of PHP SQlite database. Below we have summarized some related functions of PHP SQlite database for everyone.
sqlite_array_query of PHP SQlite database - send a SQL query and return an array.
sqlite_busy_timeout ——
Set the timeout (busy timeout duration), or frequent users lose permissions (disable busy handlers).
sqlite_changes ——
Returns the number of rows changed by the most recent SQL statement.
sqlite_close ——
Close an open SQLite database.
sqlite_column ——
Get a column from the current row of a result set.
sqlite_create_aggregate ——
Register an aggregating UDF for use in SQL statements.
sqlite_create_function ——
Registers a "regular" User Defined Function for use in SQL statements.
sqlite_current ——
Get the current row from a result set as an array.
sqlite_error_string ——
Returns the textual description of an error code.
sqlite_escape_string ——
Escapes a string for use as a query parameter.
sqlite_fetch_array——
Get the next row from a result set as an array.
sqlite_fetch_single ——
Fetches the first column of a result set as a string.
sqlite_fetch_string ——
Alias of sqlite_fetch_single().
sqlite_field_name ——
Get the field name of the specified field in the result.
sqlite_has_more ——
Returns whether or not more rows are available.
sqlite_last_error ——
Returns the latest error code of the database (the error code of the last error for a database).
sqlite_last_insert_rowid ——
Returns the row number of the most recently inserted row (the most recently inserted row).
sqlite_libencoding ——
Returns the encoding of the SQLite library.
sqlite_libversion of PHP SQlite database ——
Returns the version of the SQLite library.
sqlite_next ——
Returns the line number of the next line.
sqlite_num_fields ——
Get the number of fields in the result set.
sqlite_num_rows ——
Get the number of rows in the result set.
sqlite_open ——
Open a SQLite database. If the file does not exist, try to create it.
sqlite_popen ——
Open a SQLite database using a permanent connection. If the file does not exist, try to create it.
sqlite_query ——
Send a SQL query and return a result handle.
sqlite_rewind ——
Seek to the first row number.
sqlite_seek ——
Seek to a particular row number of a buffered result set.
sqlite_udf_decode_binary ——
Decode binary data passed as parameters to an UDF.
sqlite_udf_encode_binary——
Encode binary data before returning it from an UDF.
PHP SQlite database sqlite_unbuffered_query ——
Sends a SQL query without retrieving and caching the result rows.

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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