Found a total of 10000 related content
PHPExcel notes, mpdf export, phpexcelmpdf_PHP tutorial
Article Introduction：PHPExcel notes, mpdf export, phpexcelmpdf. PHPExcel notes, mpdf export, phpexcelmpdf phpexcel common processing ##Import class library require 'PHPExcel/Classes/PHPExcel.php'; require 'PHPExcel/Classes/PHPExcel/Writer/Excel5.php'; //Non-07 format
2016-07-12
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1159
php change date format in string
Article Introduction：There are two common methods for converting date formats in PHP: one is to use strtotime() with the date() function, such as converting "2024-12-31" to "December31,2024"; the other is the more recommended DateTime class, which supports more formats and is more reliable, such as using newDateTime() to parse standard formats or DateTime::createFromFormat() to process non-standard formats. In addition, time zone issues need to be set through date_default_timezone_set(), while localized displays can be used for IntlDateForma
2025-07-06
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344
php convert yyyy-mm-dd to dd-mm-yyyy
Article Introduction：There are three main ways to convert date formats in PHP. 1. Use date and strtotime to combine to be suitable for simple conversion in standard formats, such as converting yyyy-mm-dd to dd-mm-yyyy; 2. Use the DateTime class to be suitable for handling complex scenarios such as addition and subtraction days or object-oriented style development; 3. Non-standard formats can be regularly extracted or introduced into third-party libraries such as Carbon to parse and format output.
2025-07-04
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404
php regex performance
Article Introduction：The key to PHP regular expression performance optimization is to reduce the number of backtracking and matches; 1. Avoid greedy matching and backtracking, use non-greedy patterns, avoid nested quantifiers, and reduce the use of capture groups; 2. Compile regular expressions in advance, and use static variables or class constant storage to reduce the overhead of repeated parsing; 3. Prioritize string functions to replace simple matching tasks, such as strpos, substr, etc. to improve efficiency; 4. Use anchor points and boundary control characters such as ^, $, and \b to limit the matching range to speed up the engine judgment.
2025-07-06
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444
PHP Master | Exceptional Exceptions
Article Introduction：Core points
PHP exception is a special class that can be thrown and caught to indicate unexpected events. Unlike unrecoverable errors, exceptions are intended to be processed by the calling code and bubble upward along the execution chain until they are caught.
The difference between PHP errors and exceptions is that the error is irrecoverable and occurs in the main execution loop, indicating that there is a problem with the stability of the code or environment; while the exception is recoverable and may occur outside the main execution loop, and does not indicate the system. Unstable.
Not all non-successful situations require exceptions to be thrown. Exceptions should be thrown only if they really cannot continue execution. This means that an action that is not a normal operation or standard, an abnormality, deviates from normal and expected situations.
Throw a general Exception
2025-02-25
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750
php convert date format
Article Introduction：PHP date format conversion is mainly implemented in two ways. First, use the combination of date() and strtotime() functions, which are suitable for most standard format conversions, but have limited support for non-standard formats; second, use the DateTime class to deal with more complex scenarios, such as time zone conversion and multilingual support, which has stronger readability and fault tolerance; in addition, you also need to master common format characters, such as Y represents a four-bit year, m represents a month with a leading zero, and d represents a date with a leading zero, etc.; it is recommended to use date() in simple scenarios, and DateTime is preferred if it involves time zone or internationalization, and pay attention to verifying the legitimacy of the input.
2025-07-07
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888
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
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776
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
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1404
Soft Deletes in Databases: To Use or Not to Use?
Article Introduction：Soft Deletes: A Question of DesignThe topic of soft deletes, a mechanism that "flags" records as deleted instead of physically removing them, has...
2025-01-10
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1022
